Sodium p-styrenesulfonate Property

Melting point:

151-154 °C

Boiling point:

111-112 °C

Density 

1.043 g/mL at 25 °C

vapor pressure 

0Pa at 25℃

refractive index 

n20/D 1.387

Flash point:

78 °F

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

form 

Powder

color 

White

Water Solubility 

Soluble in water.

Hydrolytic Sensitivity

0: forms stable aqueous solutions

BRN 

3575931

Stability:

Stable. Incompatible with strong oxidizing agents.

InChIKey

XFTALRAZSCGSKN-UHFFFAOYSA-M

LogP

-3.44 at 24℃

CAS DataBase Reference

2695-37-6(CAS DataBase Reference)

EPA Substance Registry System

Benzenesulfonic acid, 4-ethenyl-, sodium salt (2695-37-6)

Safety

Hazard Codes 

Xn,Xi

Risk Statements 

22-36/37/38-41-37/38-37-20/22-10

Safety Statements 

26-36/37-36-36/37/39-39

WGK Germany 

3

F 

8-23

TSCA 

Yes

HS Code 

29049090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H315Causes skin irritation

H318Causes serious eye damage

H335May cause respiratory irritation

H336May cause drowsiness or dizziness

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P370+P378In case of fire: Use … for extinction.

Sodium p-styrenesulfonate Chemical Properties,Usage,Production

Chemical Reactivity

Sodium p-styrenesulfonate (NaSS) is a functional monomer having a radical polymerizable vinyl group, a hydrophobic benzene ring having π electrons, and a sulfonic acid (salt) group that is a strong electrolyte and has been valued in various industrial fields.
With the inductive effect of sulfo radical on the para position against vinyl group, sodium p-styrenesulfonate (NaSS) possesses the highest reactivity (polymerization activity) among all sulfonated vinyl monomers. It performs radical polymerization in such polar solvents as DMF, DMSO and water using common or redox polymerization initiators. For example, it has been used as a reactive emulsifier in order to improve stability of an emulsion and water resistance or cationic dye dyeability of a (emulsion) polymer.

Application

Sodium p-styrenesulfonate has been used as a reactive emulsifier in order to improve stability of an emulsion and water resistance or cationic dye dyeability of a (emulsion) polymer. Further, a polymer or a copolymer of sodium p-styrenesulfonate has been used as a dispersant for producing various aqueous dispersions of pigments, antioxidants, various polymers (tackifier resins, chloroprene rubber, polyacrylic acid esters, polyesters, styrene-butadiene copolymers, polyvinyl chloride, poly-acrylonitrile, polysilicones, conductive polymers and the like), nanocarbon materials, silica particles for hot forging release agents or abrasives, battery electrode materials (carbon, lithium iron phosphate, lithium manganese phosphate and the like), photographic silver halides and the like.
Furthermore, the polymer of sodium p-styrenesulfonate has been utilized as synthetic starch for clothing finishing such as an ironing agent, a hair care product, an antistatic agent, a resist acid generator, a water treatment agent, an allergen scavenger, an ion-exchange resin, a plating solution additive, a detergent for production of semiconductors and hard disks, an additive to fluids for shale oil drilling and a flame retardant for resins.

Chemical Properties

white to light beige powder

Uses

Styrene-4-sulfonic acid sodium salt is grafted on poly(ethersulfone) membrane to determine the fractionation of proteins with similar molecular weights. It is used as sodium based ion exchange membranes for membrane capacitive deionization (MCDI) for synthesis. It is used in the study of copolymerization characteristics of sodium styrenesulfonate.

Flammability and Explosibility

Non flammable