Citric acid monohydrate
CAS No.: 5949-29-1
H. S code: 29181 40000
Molecular Weight: 210.14
Appearance: Colorless crystals or white crystalline powder.
Package: 25 kg/1, 000 kg composite paper-plastic bag.
A colorless translucent crystalline acid, C6H8O7, principally derived by fermentation of carbohydrates or from lemon, lime, and pineapple juices and used in preparing citrates and in flavorings and metal polishes. Today, essentially all of the commercial citric acid is produced by surface or submerged fermentation by mold (Aspergillus niger) and submerged fermentation by yeast (Candida guilliermondii, C. Lipolytica), using a variety of substrates including sucrose, molasses, corn syrup, enzyme-treated starch, and normal paraffins.
Used as anticoagulin, chemical reagent, food additive, developer, buffer emulsifying agent, stabilizing agent and used in nonhydrogen electroplation as well as widely in tail gas absorption process of sulfur dioxide for chemical and metallurgy industries. Its absorptivity reaches 99%. The waste absorbed may be regenerated into sulfur dioxide liquid and potassium citrate for cyclic utilization. The daily-use chemical detergent with potassium citrate. As raw material instead of sodium phosphate trimer, it is non-toxic and non-pollution. It also may be used as buffer agent in cosmetic production.
|Sulphate||150 ppm max|
|Oxalate||100 ppm max|
|Calcium||200 ppm max|
|Iron||50 ppm max|
|Chloride||50 ppm max|
|Sulphated ash||0.1% max|
|Heavy metal(as Pb)||5 ppm max|
|Arsenic (As)||1 ppm max|
|Bacteria endotoxin||0.5 IU/mg max|
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