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.
InChI :1S/C8H8O3S.Na/c1-2-7-3-5-8(6-4-7)12(9,10)11;/h2-6H,1H2,(H,9,10,11);/q;+1/p-1
InChIKey :XFTALRAZSCGSKN-UHFFFAOYSA-M
SMILES :[Na+].[O-]S(=O)(=O)c1ccc(C=C)cc1
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280 Wear protective gloves/protective clothing/eye protection/face protection. P370+P378 In case of fire: Use … for extinction.