Sodium acrylate Property

Melting point:

>300 °C (lit.)

Density 

1.528[at 20℃]

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

solubility 

Aqueous Acid (Slightly), Methanol (Slightly), Water (Slightly)

form 

Solid

color 

White to Off-White

Water Solubility 

479g/L at 20℃

Hydrolytic Sensitivity

0: forms stable aqueous solutions

Stability:

May be unstable; may spontaneously polymerize. Incompatible with strong oxidizing agents.

LogP

0.46 at 25℃

CAS DataBase Reference

7446-81-3(CAS DataBase Reference)

EPA Substance Registry System

Sodium acrylate (7446-81-3)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RIDADR 

UN 3077 9 / PGIII

WGK Germany 

3

TSCA 

Yes

HS Code 

29161100

Hazardous Substances Data

7446-81-3(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H400Very toxic to aquatic life

Precautionary statements

P273Avoid release to the environment.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

Sodium acrylate Chemical Properties,Usage,Production

Chemical Properties

Colorless or light yellow viscous liquid, non-toxic, weakly alkaline, insoluble in organic solvents such as ethanol, acetone, etc., easily soluble in water and aqueous sodium hydroxide, but in aqueous solutions such as calcium hydroxide, magnesium hydroxide, etc., with the increase in the number of alkaline-earth metal ions, the first to dissolve and then precipitate.

Uses

Sodium Acrylate (SA) is a sodium salt of acrylic acid with antibacterial properties. Sodium polyacrylate is a sodium salt of a polymer consisting of acrylic acid, methacrylic acid or one of their simple esters. SA can be used in tuning the grain size of iron oxide microparticles for potential applications in biological assaying and in chemical sensors. Additionally, it acts as a reducing and capping agent for gold nanoparticles, beneficial for various biological applications.

General Description

Sodium acrylate (SA) is a metal salt that can be prepared by an acid-base reaction between sodium hydroxide and acrylic acid. It can be used in the preparation of poly(sodium acrylate) using bulk, solution, emulsion, and suspension polymerization techniques. It results in the formation of a water soluble polymer that can be used in a variety of industries and personal care applications.

Flammability and Explosibility

Non flammable

Synthesis

An aqueous solution of sodium acrylate is prepared from 216.2 g of acrylic acid (100%=3 mol), 262.8 g of NaOH (50%) and 497 g of water. 3.7 g of N-nitrosodiphenylamine and 3.7 g of 4-methoxyphenol are added to stabilize the solution. 12 g of the quaternary ammonium salt used in Example 1 are also added. 1,125 g (9 mol) of 1,4-dichlorobutene are run in at 90° C. 15.9 g of Na2CO3 are added after 1 hour and the mixture is left to react for a further 2 hours at 90° C. After phase separation, the organic layer is distilled under vacuum. 286.0 g (1.78 mol) of 4-chloro-2-butenyl acrylate (59.4% of the theoretical yield) are obtained. 641 g (5.13 mol) of dichlorobutene are recovered.

References

[1] SIMONE MANZINI . Palladium- and Nickel-Catalyzed Synthesis of Sodium Acrylate from Ethylene, CO2, and Phenolate Bases: Optimization of the Catalytic System for a Potential Process[J]. European Journal of Organic Chemistry, 2015, 2015 32: Pages 7122-7130. DOI:10.1002/ejoc.201501113.
[2] KALRA B, GROSS R A. HRP-mediated polymerizations of acrylamide and sodium acrylate[J]. Green Chemistry, 2002, 2: 174-178. DOI:10.1039/B106735B.
[3] https://www.ewg.org/skindeep/ingredients/705976-SODIUM_ACRYLATES_COPOLYMER/