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Food additives data book - wordpres

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Antioxidants 114<br />

NAME: Citric acid and its salts<br />

CATEGORY: Sequestrant/ Synergist for antioxidant/ Dispersing agent/ Acidifier/ Flavouring agent<br />

FOOD USE: Beverages/ Canned vegetables/ Baby foods/ Confectionery/ Ice-cream/ Baked products<br />

SYNONYMS: 2-Hydroxy-1,2,3-propanetricarboxylic acid, b-Hydroxytricarballylic acid/ E330/ Cap-Shure ® C-140E-<br />

75/ Citrostabil ® NEU/ Citrostabil ® – S/ Citrocoat ® A1000HP/ Citrocoat ® A2000HP/ Citrocoat ®<br />

A4000TP/ Citrocoat ® A4000TT/ Descote ® Citric Acid 50%/ Liquinat ®<br />

FORMULA: CH2(COOH)C(OH)(COOH)CH2 COOH<br />

MOLECULAR MASS: 192.43<br />

ALTERNATIVE FORMS: Isopropylcitrate; triethylcitrate; ammonium citrate; mono-, di-, tri-sodium citrate; mono-, di-, tripotassium<br />

citrate; calcium citrate; citric acid monohydrate<br />

PROPERTIES AND APPEARANCE: Colourless translucent crystals or powder with tart taste<br />

MELTING RANGE IN °C: 152–154 (anhydrous); 135–153 (hydrated)<br />

IONISATION CONSTANT AT 20°C: K1 = 7.10 ¥ 10-4 , pKa = 3.14<br />

K2 = 1.68 ¥ 10-5 , pKa = 4.77<br />

K3 = 6.4 ¥ 10-5 , pKa = 6.39<br />

PURITY %: Not less than 99.5% of C6H8O7 calculated on the anhydrous basis<br />

WATER CONTENT MAXIMUM IN %: 0.5% in the anhydrous form; 8.8% in hydrous form<br />

HEAVY METAL CONTENT MAXIMUM IN 10<br />

ppm:<br />

ARSENIC CONTENT MAXIMUM IN ppm: 3<br />

ASH MAXIMUM IN %: 0.05

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