Basic Yellow 57

Basic Yellow 57 1
Basic Yellow 57 2
AKA: Basic Yellow 13, 3-((4, 5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N, N-trimethylanilinium chloride, 3-[(4, 5-dihydro-3-methyl-5-oxo-1-phenyl-1h-pyrazol-4-yl)azo]-n, N-trimethylanilinium chloride, 68391-31-1, Trimethyl-[3-[(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]phenyl]azanium;chloride, Basic Yellow 19, Benzenaminium, 5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-N, Chloride, 5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N
Synthetic
Not Clean
3-[(4,5-Dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-N,N,N-trimethylanilinium chloride (CI 12719)
Formula
C19H22ClN5O
Mol. Weight
371.90
CAS #
68391-31-1
Functions
Hair Dyeing
Colors Hair
Traditional Use
A synthetic dye developed in the mid-20th century for cosmetic colorization. Part of the basic dye family designed to replace natural yellow pigments with more stable alternatives.
EWG
4
CIR
Safe as used
Pregnancy
—
CIR Safety Findings
Not a Sensitizer
ewg-4
medical-approval
all-shades-safe
Concentration Guide
0%
0%20%
Reg. Limit
EU regulatory limit: 0%. 2, Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 262.
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Skin Types
●all-skin-types
Best For
General
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR