Sodium Benzoate Manufacturers Suppliers

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Sodium Benzoate BP USP NF FCC Food Grade Manufacturers Suppliers

Sodium Benzoate CAS Number 532-32-1, Molecular Formula: C7H5NaO2, Molecular Weight: 144.1

Sodium Benzoate FCC Food Grade Specifications
C7H5NaO2 Formula wt 144.11
INS: 211 CAS: [532-32-1]

DESCRIPTION
Sodium Benzoate occurs as white granules, crystalline powder, or flakes. One gram dissolves in 2 mL of water, in 75 mL of alcohol, and in 50 mL of 90% alcohol.

REQUIREMENTS
Identification: A sample gives positive tests for Sodium and for Benzoate.
Assay: Not less than 99.0% and not more than 100.5% of C7H5NaO2, calculated on the anhydrous basis.
Alkalinity (as NaOH): Not more than 0.04%.
Lead: Not more than 2 mg/kg.
Water: Not more than 1.5%.

DEFINITION
Sodium benzenecarboxylate
Content: 99.0 per cent to 100.5 per cent (dried substance).

CHARACTERS
Appearance: White or almost white, crystalline or granular powder or flakes, slightly hygroscopic.
Solubility: Freely soluble in water, sparingly soluble in ethanol (90 per cent V/V).

IDENTIFICATION
A. It gives reactions of benzoates.
B. It gives reaction of sodium.

TESTS
Solution S: Dissolve 10.0 g in carbon dioxide-free water and dilute to 100 ml with the same solvent.
Appearance of solution: Solution S is clear and not more intensely coloured than reference solution.
Acidity or alkalinity: To 10 ml of solution S add 10 ml of carbon dioxide-free water and 0.2 ml of phenolphthalein solution. Not more than 0.2 ml of 0.1 M sodium hydroxide or 0.1 M hydrochloric acid is required to change the colour of the indicator.
Halogenated compounds: Maximum 200 ppm for ionized chlorine and maximum 300 ppm for total chlorine.

Sodium Benzoate contains not less than 99.0 percent and not more than 100.5 percent of C7H5NaO2, calculated on the anhydrous basis.

Identification:
A: Infrared Absorption 197M , on the un-dried specimen.
B: It responds to the tests for Sodium and for Benzoate.
Alkalinity: Dissolve 2 g in 20 mL of hot water, and add 2 drops of phenolphthalein TS: the pink color produced, if any, is discharged by the addition of 0.20 mL of 0.10 N sulfuric acid.
Water: not more than 1.5%.
Heavy metals: the limit is 0.001%.

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