Citric Acid Monohydrate

Chemical name

Citric Acid Monohydrate & Anhydrous

CAS No.

77-92-9 (anhydrous)

Chemical formula

C₆H₈O₇ (anhydrous)

Appearance

White crystalline powder

Application

Acidulant, solubilizer, buffer, antioxidant, deodorant, chelating agent — widely used in food as the leading edible sour agent and permitted acidity regulator

Appearance

Colorless or white crystal

Colorless or white crystal

Identification

Complies with the limit test

Conforms

Clarity & Colour of Solution

Pass test

Pass test

Purity

99.5–101.0%

99.94%

Moisture

< 1.0%

0.14%

Sulphated Ash

≤ 0.05%

0.01%

Sulphate

≤ 150 ppm

< 150 ppm

Oxalic Acid

≤ 100 ppm

< 100 ppm

Heavy Metals

≤ 5 ppm

< 5 ppm

Readily Carbonisable Substance

Pass test

Pass test

Bacterial Endotoxin

< 0.5 IU/mg

< 0.5 IU/mg

Aluminium

≤ 0.2 ppm

< 0.2 ppm

Lead

≤ 0.5 ppm

< 0.5 ppm

Arsenic

≤ 1 ppm

< 1 ppm

Mercury

≤ 1 ppm

< 1 ppm

Mesh

30–100 mesh

Conforms

Appearance

Colorless or white crystal

Colorless or white crystal

Identification

Complies with the limit test

Conforms

Clarity & Colour of Solution

Pass test

Pass test

Purity

99.5–101.0%

99.96%

Moisture

7.5–8.8%

8.72%

Sulphated Ash

≤ 0.05%

0.01%

Sulphate

≤ 150 ppm

< 150 ppm

Oxalic Acid

≤ 100 ppm

< 100 ppm

Heavy Metals

≤ 5 ppm

< 5 ppm

Readily Carbonisable Substance

Pass test

Pass test

Bacterial Endotoxin

≤ 0.5 IU/mg

< 0.5 IU/mg

Aluminium

≤ 0.2 ppm

< 0.2 ppm

Lead

≤ 0.5 ppm

< 0.5 ppm

Arsenic

≤ 1 ppm

< 1 ppm

Mercury

≤ 1 ppm

< 1 ppm