Basic Yellow 40
INCI: BASIC YELLOW 40
CAS 29556-33-0 EC 249-694-9
2-[7-(Diethylamino)-2- Oxo-2H-1- Benzopyran –3-yl]-1,3-dimethyl-1H-Benzimidazolium Chloride
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details
Description
2-[7-(Diethylamino)-2- Oxo-2H-1- Benzopyran –3-yl]-1,3-dimethyl-1H-Benzimidazolium Chloride
Purpose
Function
Hair dyeing (semi-permanent cationic dye)
Profile
Properties
Silicone
Silicone free
Compliance
Regulatory Status
EU
Banned
Safety
POOR
US
Permitted
Absorptionlow
Sensitizationlow
MoSnot established
NOAEL996 mg/kg
ConcernModerate
Verdict
Coumarin-benzimidazolium hybrid structure; verify fluorescence behavior does not interfere with product claims; respect concentration limits
US Note
Exempt under coal-tar hair dye provision; caution labeling required
Assessment
Ratings
Reference