Good Cosmetic Ingredient Sensitization Data

Basic Brown 17

INCI: BASIC BROWN 17

CAS Number
16581-71-8
Function
Hair colorant (direct, non-oxidative azo/nitro dye)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Coal tar hair dye exemption applies with required caution labeling

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

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

Expert Verdict

Contains azo bond and nitro group with potential for aromatic amine release under reductive conditions. Restricted to non-oxidative hair dye use only; any other cosmetic use is non-compliant.

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Concern Level: High

Regulatory Flags

colorant

Frequently Asked Questions

Is Basic Brown 17 safe in cosmetics?

Contains azo bond and nitro group with potential for aromatic amine release under reductive conditions. Restricted to non-oxidative hair dye use only; any other cosmetic use is non-compliant. The EU classifies Basic Brown 17 as "prohibited". Safety rating: GOOD.

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.

What is the Margin of Safety for Basic Brown 17?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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