Butyl thioglycolate
Synonyms
Acetic acid, mercapto-, butyl ester;
Butyl 2-mercaptoacetate;
Butyl mercaptoacetate;
Acetic acid, 2-mercapto-, butyl ester;
Category
Non-ionic surfactant
> Ester
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Chemical Numbering System
CAS: 10047-28-6
EINECS: 233-156-5
Molecular Formula & Molecular Weight
Molecular Formula: C6H12O2S
Molecular Weight: 148.22
Structure
Properties
Appearance (1), liquid.
Solubility slightly soluble in water.
Stability stable. Under strong acid or strong alkali condition, easily hydrolyzed. Easily oxidized.
Risk Liquid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, reducing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Liquid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as reducing agent.
Use as preservative.
2, Personal care products
Depilatory, hair waving or straightening agent in personal care products.
Further information:
(1), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition) of China, thioglycolic acid esters are the restricted components.
Can be applied to hair waving or straightening products.
(1a), General use: maximum concentration is 8% (as thioglycolic acid); pH 6.0 to 9.5.
(1b), Professional use: maximum concentration is 11% (as thioglycolic acid); pH 6.0 to 9.5.
(2), In accordance with EU regulations (EC) No 1223/2009, directive 88/233/EEC, thioglycolic acid esters are included in Annex III/2b.
Can be applied to hair waving or straightening products.
(2a), General use: maximum concentration is 8% (as thioglycolic acid); pH 6.0 to 9.5.
(2b), Professional use: maximum concentration is 11% (as thioglycolic acid); pH 6.0 to 9.5.
Manufacturers
Update: 20141025(1); 20200601(2);