Sodium benzoate EP 8.0 CAS NO.532-32-1

product name

benzoic acid, sodium salt

synonyms

sodium benzoate; benzoic acid sodium salt; benzoic acid sodium crystalline; benzoic acid sodium sigmaultra; benzoic acid,sodium salt

molecular formula

c₇h₅nao₂

molecular weight

144.1032

inchi

inchi=1/c7h6o2.na/c8-7(9)6-4-2-1-3-5-6;/h1-5h,(h,8,9);/q;+1/p-1

cas registry number

532-32-1

einecs

208-534-8

molecular structure

melting point

300℃

boiling point

249.3°c at 760 mmhg

flash point

111.4°c

water solubility

soluble

vapour pressur

0.0122mmhg at 25°c

safety description

s24/25:;

items

standard

appearance

white or almost white, crystalline or granular powder or flakes, slightly hygroscopic

solubility

freely soluble in water, sparingly soluble in ethanol (90 per cent v/v)

identification

a. it gives reactions (b) and (c) of benzoates

b. it gives reaction (a) of sodium

appearance of solution

clear and not more intensely coloured than reference solution y6

acidity or alkalinity

not more than 0.2 ml

halogenated compounds

maximum 200 ppm

heavy metals

maximum 10 ppm

loss on drying

maximum 2.0 per cent

assay

99.0~100.5%