CAS No.: 532-32-1.
Grade: Food Grade Sodium Benzoate
Relative molecular mass: 144.12
Sodium benzoate is a salt of benzoic acid that is found naturally in cranberries, prunes, plums, apples, and other fruits. It is soluble in water and works against yeast and bacteria. It is generally believed that sodium benzoate is safe and harmless, and is often used as a preservative in food. Sodium benzoate is a white sodium benzoate prill or crystalline sodium benzoate powder, odorless or slightly with a benzoin odor, slightly sweet taste, astringent taste, stable in the air, easily soluble in water, its aqueous solution pH of 8, soluble in ethanol.
|TEST ITEM||STANDARD SPECIFICATIONS|
|CHARACTERS||A WHITE, ALMOST ODOURLESS, CRYSTALLINE POWDER OR PRILL|
|APPEARANCE OF SOLUTION||CLARITY|
|ACIDITY OR ALKALINITY ML/G||0.2MAX|
|IONISED CHLORINE||200 PPM MAX|
|TOTAL CHLORIDE||300 PPM MAX|
|HEAVY METALS(IN TERMS OF LEAD)||10 PPM MAX|
|ARSENIC:||3 ppm MAX|
|LEAD:||2 ppm MAX|
|MERCURY:||1 ppm MAX|
|READILY OXIDISABLE SUBSTANCES||POSITIVE|
|LOSS ON DRYING % (m/m):||1.5% MAX|
|ASSAY % (m/m):||99.0%-100.5%|
1. Sodium benzoate used as a preservative in food
Sodium benzoate is a preservative commonly used in fruit pies, jams, beverages, salads, relishes, and sauerkraut—foods that have an acidic pH. It also naturally occurs in and some spices such as cloves and cinnamon. Soft drinks are the number one source of sodium benzoate in the diet.
2. As chemical preservatives
Sodium benzoate is frequently used in processed foods to prevent the growth of bacteria, yeast, or other unwanted microorganisms that could spoil your food. When sodium benzoate is combined with water, benzoic acid is produced. Benzoic acid is the active form of the preservative—the form that protects foods.
3. Other sodium benzoate uses
Sodium benzoate granule can also be found in other products such as cosmetics and pharmaceuticals where it acts as a corrosion inhibitor, fragrance ingredient, and preservative. It is not a broad-spectrum preservative for cosmetic use and should be combined with other preservatives. Sodium benzoate is often combined with potassium sorbate in low pH products in order to benefit from the ingredients’ synergistic effects against yeast and mold. When combined with caffeine, it can have a sunscreen effect and provide UVB protection with antioxidant activity.
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