| SCCS_vision_codex |
NOAEL |
=100 |
mg/kg/day |
- |
- |
- |
NOAEL study |
{"dose":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose).","effect":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose). Based on these findings (under exclusion of the one incidence at the low dose) the authors concluded “Hepatocytic hypertrophy […] occurred in the absence of any other supportive functional or morphological changes. Centrilobular hypertrophy of hepatocytes is frequently an adaptive change in response to xenobiotics and at low incidence and severity considered not to be adverse.”). The authors of the study establish a NOAEL of 100 mg/kg/day. Other microscopic findings were only related to the high dose group (and confined to the males), like cortical tubular basophilia in the kidneys (8/12 males), limiting ridge hyperplasia of the forestomach (12/12 males) with squamous hyperplasia of the main stomach (2/12 males). At the high dose (600) histopathological findings were accompanied by increased relative and absolute liver weights (persisting through the recovery period) and effects on a number of clinical biochemistry parameters (li","page":16,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_001"} |
| SCCS_vision_codex |
NOAEL |
=90 |
mg/kg/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the judgement of the authors these two cases were not related to treatment. Skeletal examinations showed dumbbell formed thoracic vertebral bodies in 1, 3, 2, 4 foetuses of groups 1 to 4. The difference between controls and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_002"} |
| SCCS_vision_codex |
NOAEL |
=24 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"trols and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_004"} |
| SCCS_vision_codex |
NOAEL |
=270 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_005"} |
| SCCS_vision_codex |
NOAEL |
=30 |
mg/kg bw/d |
rat |
- |
90-day |
irritation |
{"dose":"Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested).","effect":"are the targets of systemic toxicity of 5-amino-6- chloro-o-cresol. Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested). This LOAEL is supported by the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_006"} |
| SCCS_vision_codex |
NOAEL |
=33 |
mg/kg bw/day |
rabbit |
dermal |
90-day |
dermal absorption |
{"dose":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose.","effect":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between the two experiments using a 50% concentration of 5-Amino-6- chloro-o-cresol is unexplained. However, the overall evidence suggests that 5-amino-6- chloro-o-cresol may be considered a non-sensitiser. Dermal absorption Under the condition of the experiments in which hair dye formu","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_007"} |
| SCCS_vision_codex |
NOAEL |
=100 |
mg/kg/day |
- |
- |
- |
NOAEL study |
{"dose":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose).","effect":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose). Based on these findings (under exclusion of the one incidence at the low dose) the authors concluded “Hepatocytic hypertrophy […] occurred in the absence of any other supportive functional or morphological changes. Centrilobular hypertrophy of hepatocytes is frequently an adaptive change in response to xenobiotics and at low incidence and severity considered not to be adverse.”). The authors of the study establish a NOAEL of 100 mg/kg/day. Other microscopic findings were only related to the high dose group (and confined to the males), like cortical tubular basophilia in the kidneys (8/12 males), limiting ridge hyperplasia of the forestomach (12/12 males) with squamous hyperplasia of the main stomach (2/12 males). At the high dose (600) histopathological findings were accompanied by increased relative and absolute liver weights (persisting through the recovery period) and effects on a number of clinical biochemistry parameters (li","page":16,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_001"} |
| SCCS_vision_codex |
NOAEL |
=90 |
mg/kg/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the judgement of the authors these two cases were not related to treatment. Skeletal examinations showed dumbbell formed thoracic vertebral bodies in 1, 3, 2, 4 foetuses of groups 1 to 4. The difference between controls and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_002"} |
| SCCS_vision_codex |
NOAEL |
=24 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"trols and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_004"} |
| SCCS_vision_codex |
NOAEL |
=270 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_005"} |
| SCCS_vision_codex |
NOAEL |
=30 |
mg/kg bw/d |
rat |
- |
90-day |
irritation |
{"dose":"Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested).","effect":"are the targets of systemic toxicity of 5-amino-6- chloro-o-cresol. Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested). This LOAEL is supported by the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_006"} |
| SCCS_vision_codex |
NOAEL |
=33 |
mg/kg bw/day |
rabbit |
dermal |
90-day |
dermal absorption |
{"dose":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose.","effect":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between the two experiments using a 50% concentration of 5-Amino-6- chloro-o-cresol is unexplained. However, the overall evidence suggests that 5-amino-6- chloro-o-cresol may be considered a non-sensitiser. Dermal absorption Under the condition of the experiments in which hair dye formu","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_007"} |
| SCCS_vision_codex |
NOAEL |
=100 |
mg/kg/day |
- |
- |
- |
NOAEL study |
{"dose":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose).","effect":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose). Based on these findings (under exclusion of the one incidence at the low dose) the authors concluded “Hepatocytic hypertrophy […] occurred in the absence of any other supportive functional or morphological changes. Centrilobular hypertrophy of hepatocytes is frequently an adaptive change in response to xenobiotics and at low incidence and severity considered not to be adverse.”). The authors of the study establish a NOAEL of 100 mg/kg/day. Other microscopic findings were only related to the high dose group (and confined to the males), like cortical tubular basophilia in the kidneys (8/12 males), limiting ridge hyperplasia of the forestomach (12/12 males) with squamous hyperplasia of the main stomach (2/12 males). At the high dose (600) histopathological findings were accompanied by increased relative and absolute liver weights (persisting through the recovery period) and effects on a number of clinical biochemistry parameters (li","page":16,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_001"} |
| SCCS_vision_codex |
NOAEL |
=90 |
mg/kg/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the judgement of the authors these two cases were not related to treatment. Skeletal examinations showed dumbbell formed thoracic vertebral bodies in 1, 3, 2, 4 foetuses of groups 1 to 4. The difference between controls and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_002"} |
| SCCS_vision_codex |
NOAEL |
=24 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"trols and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_004"} |
| SCCS_vision_codex |
NOAEL |
=270 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_005"} |
| SCCS_vision_codex |
NOAEL |
=30 |
mg/kg bw/d |
rat |
- |
90-day |
irritation |
{"dose":"Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested).","effect":"are the targets of systemic toxicity of 5-amino-6- chloro-o-cresol. Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested). This LOAEL is supported by the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_006"} |
| SCCS_vision_codex |
NOAEL |
=33 |
mg/kg bw/day |
rabbit |
dermal |
90-day |
dermal absorption |
{"dose":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose.","effect":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between the two experiments using a 50% concentration of 5-Amino-6- chloro-o-cresol is unexplained. However, the overall evidence suggests that 5-amino-6- chloro-o-cresol may be considered a non-sensitiser. Dermal absorption Under the condition of the experiments in which hair dye formu","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_007"} |
| SCCS_vision_codex |
NOAEL |
=100 |
mg/kg/day |
- |
- |
- |
NOAEL study |
{"dose":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose).","effect":") at the end of recovery (although at slight severity; no recovery groups for medium and low dose). Based on these findings (under exclusion of the one incidence at the low dose) the authors concluded “Hepatocytic hypertrophy […] occurred in the absence of any other supportive functional or morphological changes. Centrilobular hypertrophy of hepatocytes is frequently an adaptive change in response to xenobiotics and at low incidence and severity considered not to be adverse.”). The authors of the study establish a NOAEL of 100 mg/kg/day. Other microscopic findings were only related to the high dose group (and confined to the males), like cortical tubular basophilia in the kidneys (8/12 males), limiting ridge hyperplasia of the forestomach (12/12 males) with squamous hyperplasia of the main stomach (2/12 males). At the high dose (600) histopathological findings were accompanied by increased relative and absolute liver weights (persisting through the recovery period) and effects on a number of clinical biochemistry parameters (li","page":16,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_001"} |
| SCCS_vision_codex |
NOAEL |
=90 |
mg/kg/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the judgement of the authors these two cases were not related to treatment. Skeletal examinations showed dumbbell formed thoracic vertebral bodies in 1, 3, 2, 4 foetuses of groups 1 to 4. The difference between controls and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_002"} |
| SCCS_vision_codex |
NOAEL |
=24 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"trols and dosed groups were significant. According to the authors these cases are within the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_004"} |
| SCCS_vision_codex |
NOAEL |
=270 |
mg/kg bw/d |
rat |
- |
developmental |
developmental toxicity |
{"citation":"Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain","dose":"There was no further statistical evidence for differences between the treated groups and the control group.","effect":"n the normal range of abnormal findings in this strain of rats. There was no further statistical evidence for differences between the treated groups and the control group. Conclusion The study authors considered the NOAEL for this study was 90 mg/kg/d for maternal toxicity and the NOEL for developmental toxicity was 270 mg/kg/day. Ref.: 14 Comments The SCCS considers 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) as the NOAEL of maternal toxicity in this study due to reduced maternal body weight gain. The NOAEL of embryo-foetal toxicity was 270 mg/kg bw/d (219 mg/kg bw/d calculated as free base), the highest dose tested. There are significant, but not dose-related differences in the number of","page":21,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_005"} |
| SCCS_vision_codex |
NOAEL |
=30 |
mg/kg bw/d |
rat |
- |
90-day |
irritation |
{"dose":"Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested).","effect":"are the targets of systemic toxicity of 5-amino-6- chloro-o-cresol. Based on the haematological changes, in particular the reduced mean corpuscular Hb concentration in all dose groups of female rats, the LOAEL is 100 mg/kg/day (the lowest dose tested). This LOAEL is supported by the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_006"} |
| SCCS_vision_codex |
NOAEL |
=33 |
mg/kg bw/day |
rabbit |
dermal |
90-day |
dermal absorption |
{"dose":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose.","effect":"the obvious dose-dependency of centrilobular hypertrophy of the liver which in males was observed down to the low dose. In the high dose recovery group, this effect persisted until termination of the study. In a teratogenicity study, the NOAEL of maternal toxicity was 30 mg/kg bw/d (24 mg/kg bw/d calculated as free base) due to reduced maternal body weight gain. For the margin of safety calculation, the LOAEL of the 90-day study was adjusted with a factor of 3, resulting in 33 mg/kg bw/day. This is similar to the NOAEL of the teratogenicity study. Irritation / sensitisation 5-Amino-6-chloro-o-cresol was not irritant to rabbit skin. Under the conditions of the study, the undiluted test material was irritating to the rabbit eye. The discrepancy between the two experiments using a 50% concentration of 5-Amino-6- chloro-o-cresol is unexplained. However, the overall evidence suggests that 5-amino-6- chloro-o-cresol may be considered a non-sensitiser. Dermal absorption Under the condition of the experiments in which hair dye formu","page":24,"pdf":"sccs_o_005.pdf","row_type":"noael_study","study_id":"sccs_o_005_noael_007"} |