Benzoic Acid

Product Name

: BENZOIC ACID

C.A.S. No.

: 65-85-0

Molecular Formula

: C₇H₆O₂

Molecular Weight

: 122.12g/mol

SPECIFICATION

IP

BP

USP

Description

Colorless, light crystals, scales or needles, odour, slight characteristic.

White or almost white, crystalline powder or colorless crystals.

Colorless, light crystals, scales or needles, odor, slight characteristic.

Solubility

-

Slightly soluble in water, soluble in boiling water and freely soluble in ethanol (96 %) and in fatty oils.

-

Appearance of solution

A 5.0 % w/v solution in ethanol (95%) is clear and colorless.

5 % solution in ethanol (96 %) is clear and colorless.

-

Identification

1. Melting point

2. Reaction

3. Acidic

1. 121^oC to 123^oC

2. buff colored precipitate is produced

3. Light absorption maximum at about 225 nm, about 0.8.

4. 1% w/v solution is acidic to methyl red solution.

A : 121^oC to 124^oC

B: It gives reaction of Benzoates.

1. Summoned colored PPT is formed.

2. A white PPT formed which is soluble in ether

Arsenic

NMT 2 ppm.

-

-

Heavy metals

NMT10 ppm.

-

NMT10 ppm.

Readily oxidisable substance

NMT 0.5 ml of potassium permanganate is require to persist pink color.

After 5 min. solution is still colored pink.

NMT 0.50 ml of 0.10 N potassium permanganate is Consumed.

Readily carbonisable substance

The color of the solution is not more instance than that of the reference solution YS5.

The solution is not more intensely colored than reference solution Y5

The solution has no more color than matching fluid Q.

Cinnamic acid

No odour of benzaldehyde is developed.

-

-

Chlorinated compounds

The filtrate compiles with the limit test of chloride.

-

-

Halogenated compounds & Halides

-

NMT 300 ppm

-

Residue on Ignition

NMT 0.1 %

NMT 0.1 %

NMT 0.05 %

Water by KF

NMT 0.7 %

-

NMT 0.7 %

Assay (on anhydrous basis)

99.5 % to 100.5 %

99.0 % to 100.5 %

99.5 % to 100.5 %