2-Acrylamido-2-methylpropanesulfonic acid
Synonyms
AMPS;
1-Propanesulfonic acid, 2-methyl-2-((1-oxo-2-propenyl)amino)-;
Category
Anionic Surfactant
> Sulfonate
>> Amido Sulfonate
>>> Acyl Taurate
>>>> Linear Alkenyl Fatty Acyl Taurate
Chemical Numbering System
CAS: 15214-89-8
EINECS: 239-268-0
Molecular Formula & Molecular Weight
Molecular Formula: C7H13NO4S; C7H13N1O4S
Molecular Weight: 207.25
Structure
Properties
Appearance (1), transparent liquid; (2), solid.
Solubility soluble in water.
Stability stable. Easy self-polymerization. Under hot strong acid or hot strong alkali, easily hydrolyze. Easily oxidized.
Risk Solid form: corrosion; flammable material; irritation, irritation to skin, eye, respiratory. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Liquid form: corrosion; irritation, irritation to skin, eye.
GHS label:
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
5400mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent film-forming, dispersing abilities.
Synthesis
Acrylonitrile, fuming sulfuric acid react with isobutylene, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
|
Liquid |
Solid |
|
|
Actives, %, ≥ |
30.0 |
95.0 |
|
pH (25°C, 1%) |
< 3.0 |
< 3.0 |
Test Methods
(1), Actives
GB/T 5173 Surface active agents and detergents -- Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
(2), pH
GB/T 6368 Surface active agents -- Determination of pH of aqueous solution - Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
|
Liquid |
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
20 |
|
As, mg/kg, ≤ |
3 |
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 monomer.
Manufacturers
References
[1]: ChemIDplus. 15214-89-8, 2-Acrylamido-2-methylpropanesulphonic acid
Update: 20171010(1);