Sodium Benzoate

Synonym(s)

: Benzoic acid; sodium salt, benzoic acid sodium salt, sobenate

Mol. Formula

: C7H6O2.Na

EC / List no.

: 208-534-8

CAS no.

: 532-32-1

Molecular weight

: 144,1

Sodium benzoate is an organic sodium salt resulting from the replacement of the proton from the carboxy group of benzoic acid with a sodium ion. It has a role as antimicrobial food preservative, drug allergen, EC 1.3.1.1.33 (arachidonate 15-lipoxygenase) inhibitor, EC 3.1.1.3 (triacylglycerol lipase) inhibitor, algal metabolite, human xenobiotic metabolite and plant metabolite. Contains benzoate.

Application

» This substance is used in the following products: cosmetics and personal care products, plant protection products, and perfumes and fragrances.
» Used in machine wash liquids/detergents, automotive care products, paints, coatings or adhesives, fragrances and air fresheners.

Product Specifications

Physical and Chemical Properties
» Appears as a white, crystalline powder or granules.
» It was almost odorless and had a sweet, astringent taste.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	436
Density	g/cm³	1.5	20 °C
Solubility	g/ L	556	20°C, soluble with water
Vapor pressure	Pa	0	20 °C
LogP		1.88
Autoignition temperature	°C	1010
Surface tension	mN/ m	72.9	1 g/ L, 20 °C
pKa		4.03	20 °C
pH		8