What is the NOAEL for 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane?
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane has 7 NOAEL studies in the database. The lowest reported value is GI3799S29T UNII. Source: openFDA substances.
NOAEL Data
REACH Registered
Cosmetic Ingredient
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane
Also known as: 2,2-Dimethyl-3-(3-methyl-2,4-pentadienyl)oxirane, 2,2-Dimethyl-3-(3-methyl-2,4-dimethyl-pentadienyl)oxirane, EINECS 273-870-4, 6,7-Epoxy-3,7-dimethyl-1,3-octadiene
CAS 69103-20-4
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane (CAS 69103-20-4) is a chemical substance. Key regulatory status: REACH registered, 2 regulatory/inventory lists, cosmetic ingredient cross-reference; source data from EPA ToxValDB, EPA CPDat, AICIS, ECHA REACH.
View cosmetic safety profile for Dimethyl-3-methylpentadienyl-oxirane →
Cross-Vertical Regulatory Divergence
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane is prohibited in EU cosmetics but has active industrial GHS classifications (H317).
SOURCE
Cross-vertical comparison
Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
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noael studies public
NOAEL studies
7
SOURCE
chemical inventory jurisdictions
Regulatory lists
2
SOURCE
eu clp annex vi
GHS signal
Not classified
Chemical Identity
CAS, identifiers, formula, and alternate names for the matched substance record.
SOURCE
DSSTox identifiers
10 fields
Name
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane
CAS Number
69103-20-4
DTXSID
DTXSID3052436
Molecular Formula
C10H16O
InChI Key
LIMXJCIGROLRED-UHFFFAOYSA-N
Monoisotopic Mass
152.120115
Synonyms
2,2-Dimethyl-3-(3-methyl-2,4-pentadienyl)oxirane2,2-Dimethyl-3-(3-methyl-2,4-dimethyl-pentadienyl)oxiraneEINECS 273-870-46,7-Epoxy-3,7-dimethyl-1,3-octadiene
Functional Uses
Industrial and product-use categories associated with this substance.
SOURCE
EPA CPDat
10 records
Fragrance
Regulatory Lists
Inventory, screening, and regulatory list matches from public chemical databases.
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EPA CPDat
2 records
| List | Keyword | Source |
|---|---|---|
| IFRA Transparency | IFRA | IFRA |
| SCIL (9/2019) | USEPA | Safer Chemical Ingredients List |
NOAEL Studies
Toxicology endpoints rendered from public NOAEL study rows.
SOURCE
NOAEL studies
Showing 7 of 7 studies
| Value | Unit | Endpoint | Route | Species | Source |
|---|---|---|---|---|---|
| GI3799S29T | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| GI3799S29T | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| GI3799S29T | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| GI3799S29T | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| - | % | Incidence of positive responses | Dermal | Human | NTP_ICE_skin_sensitization |
| >5000 | mg/kg bw | LD50 | oral | Rat | NTP_ICE_acute_oral |
| 4 | unitless | Relative reliability score | Dermal | Human | NTP_ICE_skin_sensitization |
Showing 7 of 7 studies
REACH Registration
Registration status from the ECHA REACH registered substances database.
SOURCE
ECHA (EU)
1 records
| Status | Name | EC Number | Link |
|---|---|---|---|
| Registered | 2,2-dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane | 273-870-4 | ECHA overview → |
Australian Status (AICIS)
Australian industrial chemicals inventory status and applicable conditions.
SOURCE
AICIS inventory
1 records
Inventory Status
listed
Cosmetic Safety Profile
Same-CAS cosmetic ingredient record for cross-vertical context.
SOURCE
CosIng / Ingredients DB
EU Status
prohibited
Max
-
Category
Fragrance
Frequently Asked Questions
What regulatory lists include 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane?
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane appears on 2 regulatory/inventory lists including IFRA Transparency, SCIL (9/2019). Source: EPA CPDat.
Is 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane used in cosmetics?
Yes, 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane is also indexed as a cosmetic ingredient under the name Dimethyl-3-methylpentadienyl-oxirane. View the full cosmetic safety profile on the ingredient page for detailed safety data, SCCS opinions, and regulatory status.
Where does the safety data for 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane come from?
Safety data is sourced from EPA ToxValDB, EPA CPDat, AICIS (Australian Industrial Chemicals Introduction Scheme), EPA DSSTox, ECHA REACH, CosIng / Ingredients DB. All data traces to primary regulatory sources and is updated from official government databases.
Does 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane have different safety status in cosmetics vs industrial chemicals?
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane is prohibited in EU cosmetics but has active industrial GHS classifications (H317).
Is 2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane used outside industrial chemicals?
2,2-Dimethyl-3-(3-methylpenta-2,4-dienyl)oxirane also appears in cosmetics databases.