Is Basic Brown 17 safe in cosmetics?
Basic Brown 17 has a safety rating of "GOOD" in our database. EU status: prohibited. US status: permitted.
Basic Brown 17
INCI: BASIC BROWN 17
Basic Brown 17 (CAS 16581-71-8) is a cosmetic cosmetic ingredient functioning as Hair colorant (direct, non-oxidative azo/nitro dye). EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 16581-71-8 →
Auto-generated CPSR Part A draft with source citations
Function
Hair colorant (direct, non-oxidative azo/nitro dye)
Safety Rating
GOOD
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
Coal tar hair dye exemption applies with required caution labeling
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Basic Brown 17.
Calculate MoS for your specific formulation with the MoS Calculator.
Sensitization Profile
Contact sensitization data for Basic Brown 17 based on clinical patch test studies and IFRA standards.
Sensitization Rate
low
Allergen Class
dye
EU Allergen Listed
no
Patch Test Positive Rate
0.2%
Cross-reactivity Group
para-amino-group
Reaction Type
contact-dermatitis
Source: SCCS; IVDK
Additional Ingredient Properties
2 property records from structured ingredient metadata.
allergen_detail
{"eu_allergen_listed": "no", "allergen_class": "dye", "cross_reactivity_group": "para-amino-group", "patch_test_frequency_pct": "0.2", "sensitization_rate": "low", "common_reaction_type": "contact-dermatitis", "ifra_restricted": "no", "source": "SCCS; IVDK"}
hair_dye
{"cas_number": "68391-32-2", "ingredient_class": "direct_dye", "color_index_CI_number": "12251", "chemical_class": "azo", "color_result_on_hair": "Brown", "shade_range": "brown", "primary_function": "direct_deposit", "requires_developer": "no", "deposit_only": "yes", "permanence": "semi_permanent", "wash_fastness_shampoos": "8-15", "light_fastness": "moderate", "oxidation_mechanism": "direct_absor…
Expert Verdict
Expert safety assessment and concern-level summary for Basic Brown 17.
Regulatory Flags
colorant
NOAEL Studies Summary
View details ->Public NOAEL study rows linked to Basic Brown 17 by CAS number or substance name.
Studies
32
Lowest NOAEL
0.023
Highest NOAEL
240
Units vary across source rows: mg/kg bw/day, mg/kg bw, mg/kg bw/d
SCCS_vision_codex
Frequently Asked Questions
Is Basic Brown 17 allowed in the EU?
Basic Brown 17 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Basic Brown 17 do in cosmetics?
Basic Brown 17 functions as: Hair colorant (direct, non-oxidative azo/nitro dye). It is classified as a cosmetic ingredient in our database. CAS number: 16581-71-8.
Compliance Tools
Check Basic Brown 17 compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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