Sodium benzoate, also known as sodium benzoate, is an organic substance with a chemical formula of C7H5NaO2. It is a white granule or crystal powder, odorless or slightly benzoin-like, slightly sweet and astringent, with a relative molecular mass of 144.12. It is stable in the air and easily soluble in water. The pH value of its aqueous solution is 8 and soluble in ethanol.
Benzoic acid and its salts are broad-spectrum antimicrobial agents, but their antimicrobial effectiveness depends on the pH of the food. As the acidity of the medium increases, its bactericidal and bacteriostatic effects increase, but it loses its bactericidal and bacteriostatic effects in alkaline media. The optimal pH value of its antiseptic is 2.5~4.0.
Alias: Sodium Benzoate
Chemical formula: C7H5NaO2
Molecular weight: 144.103
CAS :532-32-1
EINECS :208-534-8
Melting point: 436 ℃
Boiling point: 249.3 ℃ (at 760mmhg)
Water solubility: easily soluble
Density: 1.44 g/cm³
Appearance: white crystalline powder
Flash point: 111.4 ℃
Application: Preservative Safety Description S24/25
Hazard symbols: R36/37/38
Physical and chemical properties
1. Density: 1.44g/cm3
2. Melting point: 436°C
3. Appearance: white crystalline powder
4. Solubility: easily soluble in water, slightly soluble in alcohol
Application
1. Mainly used as a food preservative, also used to make drugs, dyes, etc.
2. Used in the pharmaceutical industry and plant genetic research, also used as dye intermediates, fungicides and preservatives
3. Preservatives; antimicrobial agents.
4. Sodium benzoate is also an important acid-type food preservative. Converts to the effective form of benzoic acid when used. See benzoic acid for scope of use and dosage. In addition, it can also be used as a preservative for feed.
5. The product is used as a food additive (preservative), a fungicide in the pharmaceutical industry, a mordant in the dye industry, a plasticizer in the plastic industry, and an intermediate in organic synthesis such as spices.
6. Used as cosolvent for serum bilirubin test, food additive (preservative), fungicide in pharmaceutical industry, mordant in dye industry, plasticizer in plastic industry, and intermediate in organic synthesis such as spices.
