Detailed Product Description

Sodium Benzoate.

APPREARANCE     White crystalline or granular, Odourless powder

PURITY                99.0% min

HEAVY METALS     10ppm max

TOTAL CHLORINE   300ppm max

MOISTURE           0.5% max

ARSENIC              3ppm max

SOLUBILITY            Pass test

ALKALINITY            0.04% max

CAS No.                   532-32-1

Molecular Formula        C7H5NaO2

Molecular Weight         144.12

Physical & Chemical Character        

PHYSICAL STATE         White granules or crystalline powder

MELTING POINT          300 C

BOILING POINT          

SPECIFIC GRAVITY       1.44

SOLUBILITY IN WATER    Soluble

SOLVENT SOLUBILITY   

AUTOIGNITION              

HAZARD CLASS             not regulated

PH                       

STABILITY                Stable under ordinary conditions

More Information        

Sodium Benzoate (the sodium salt of benzoic acid ) is a colorless or white crystalline powder or granular. It is soluble in water and slightly soluble in alcohol. It is used as one of the principal antimicrobial and antifungal  preservatives used in foods, beverages, cosmetic, dental care products, and pharmaceuticals, but it's concentration is limited usually not exceeding 0.1% because it is poisonous. Antimicrobial activity is effective in acidic conditions (pH 4.5 or lower). The lower the pH level, the greater the effectiveness is expected. It is also used in medications, anti-fermentation additives and tabletting lubricant for pharmaceuticals. It may also be used as a test for liver function. The industrial applications are as a corrosion inhibitor in antifreeze products, as a nucleating agent for polyolefin, as a dye intermediate, and as a catalyst. Potassium Benzoate (the potassium salt of benzoic acid ) is an alternative to sodium benzoate. Potassium Benzoate replaces sodium benzoate where low sodium content is required.

l         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.