Sodium benzoate
CAS:532-32-1
Molecular formula: C7H5NaO2
Physical character:
Sodium benzoate is white pellet mostly , nothing smelly ,has tiny benzoin smell , taste is tiny sweet, sodium benzoate difficult to dissolve in water at normal temperature , tiny volatility in air (especially hot air) , has hygroscopic property ,dissolve in hot water, and also dissolve in ethanol , chloroform and non-volatility oil. Sodium benzoate is also the acidity aseptic, without sterilize, restrain bacterial effect at alkalescent medium; it's antiseptic capability is the best. Sodium benzoate easy to dissolve in oil, easy to penetrate cytomembrane enter the cellular inner, disturb the cytomembrane penetrability, restrain the cytomembrane absorb amino acid; enter cellular inner to ionization and acidification cellular alkali reserves, restrains cellular breath enzyme system activity , prevent acetophenetidin coferment A condensation reaction , thereby to antiseptic effect of food.
Use: Be used as food and the medicine aseptic , be used for antifreezing liquid of automobile , steel rust protection. As food additive be broad used for soy, vinegar, jam kind , sorbet , can etc.
Packing and transportation:
Use fibre bag ,gunny-bag or plastic bag inner lining polyethylene bag. Store up the place, dry and aeration, protection against the tide , precaution the high temperature, be far away from the fire source.
Food additive
Benzoic acid content % >99.5
Melting point 121-123
Molten state accord to prescribe
Easy to oxid accord to prescribe
Easy to carbide shallow than 17 colorimetric liquid
Contain chlorine compound (as Cl) % <0.02
Firing residue % <0.1
Heavy metal (as Pb) % <0.001
Arsenic % <0.0002
Sodium benzoate BP, GRANULAR, POWDER