3-(2-Thienyl)-DL-alanine
Synonyms
2-Thiophenepropanoic acid, α-amino-, (±)-;
β-2-Thienyl-DL-alanine;
2-Amino-3-(thiophen-2-yl)propanoic acid;
Category
Zwitterionic Surfactant
> Amino Acid Type
>> Amino acid and its Salts
Chemical Numbering System
CAS: 2021-58-1
EINECS: 217-967-1
Molecular Formula & Molecular Weight
Molecular Formula: C7H9NO2S; C7H9N1O2S
Molecular Weight: 171.22
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable.
Risk Solid 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 emulsifying, dispersing, antistatic abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
Ninhydrin method
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
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.
Major Uses
1, Typical applications
Use as intermediate in organic synthesis.
Use as dispersing agent, emulsion stabilizer.
Manufacturers