Butyl Thioglycolate
⚠ EU RestrictedIdentification
CAS Number 10047-28-6
EINECS / EC 233-156-5
CosIng Ref 31719
Chemical Name Butylmercaptoacetate,
Formula C6H12O2S
Mol. Weight 148.23 g/mol
Function & Classification
Primary Function Hair Conditioning
Secondary Functions Smoothing
Origin Synthetic
Category Other
EU Regulatory Status
Max Leave-on 8%
Max Rinse-off 11%
Restrictions Max 8% (general use, pH 7–9.5); Max 11% (professional use, pH 7–9.5); Max 5% (rinse-off hair, general).
Conditions of Use Hair waving/straightening: max 8% total thioglycolate (pH 7-9.5).
Mandatory Warning Can cause allergic reactions. Contains thioglycolate.
Safety Profile
2 / 10
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
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Documents