2-Acrylamide-2-methylpropanesulfonic acid Chemical Properties

Melting point:

195 °C (dec.) (lit.)

Density 

1.45

vapor pressure 

<0.0000004 hPa (25 °C)

refractive index 

1.6370 (estimate)

Flash point:

160 °C

storage temp. 

Store below +30°C.

solubility 

>500g/l soluble

pka

1.67±0.50(Predicted)

form 

solution

color 

White

Water Solubility 

1500 g/L (20 ºC)

Sensitive 

Hygroscopic

BRN 

1946464

Stability:

Light Sensitive

InChIKey

HNKOEEKIRDEWRG-UHFFFAOYSA-N

LogP

-3.7 at 20℃ and pH1-7

Surface tension

70.5mN/m at 1g/L and 20℃

Dissociation constant

2.4 at 20℃

CAS DataBase Reference

15214-89-8(CAS DataBase Reference)

EPA Substance Registry System

1-Propanesulfonic acid, 2-methyl-2-[(1-oxo-2-propenyl)amino]- (15214-89-8)

Safety Information

Hazard Codes 

C,Xn

Risk Statements 

34-21/22-41-37-20/22

Safety Statements 

26-36/37/39-45-22

RIDADR 

UN 2585 8/PG 3

WGK Germany 

1

RTECS 

TZ6658000

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29241900

Toxicity

LD50 orally in Rabbit: 1000 - 2000 mg/kg

MSDS

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2-Acrylamide-2-methylpropanesulfonic acid Usage And Synthesis

Chemical Properties

2-Acrylamide-2-methylpropanesulfonic acid is a white crystals. The melting point is 195°C (decomposition). Soluble in water, the solution is acidic. Soluble in dimethylformamide, partially soluble in methanol, ethanol, insoluble in acetone. Slightly sour.

Uses

2-Acrylamide-2-methylpropanesulfonic acid has good complexion, adsorption, biological activity, surface activity, hydrolysis stability and thermal stability. It can be used in oil chemical, water treatment, synthetic fiber, printing and dyeing, plastics, water absorbing coatings, paper, bio-medical, magnetic materials and cosmetics industries.

Preparation

2-Acrylamido-2-methylpropanesulfonic acid(AMPS) can be synthesized by one step and two steps. The one-step method is to react the raw materials acrylonitrile, isobutylene and oleum together. The two-step method is to sulfonate isobutylene in the presence of a reaction solvent to obtain a sulfonated intermediate, and then react with acrylonitrile in the presence of sulfuric acid. One-step method is more economical. Raw material consumption quota: isobutylene 300kg/t, acrylonitrile 290kg/t, oleum 560kg/t.

Application

2-Acrylamide-2-methylpropanesulfonic acid is an important monomer. Its copolymers or homopolymers with different molecular weight can be widely used in textile, oil drilling, water treatment, papermaking, dying, coating, cosmetics, electronics, etc. because of its unique formular structure—containing sulfonic acid group and unsaturated radical, thus showing excellent properties in many aspects.

Definition

ChEBI: 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid is an organosulfonic acid.

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