Zhengzhou Natural Chemical Co., Ltd.

Citric acid Anhydrous

• Category :

  Food and Feed additives/Food additives

• Synonyms :

  2-Hydroxy-1,2,3-propanetricarboxylic acid;Citric acid, anhydrous;1,2,3-Propanetricarboxylic acid, 2 hydroxy-;Citric acid anhydrous;Citric acid anhydride;2-hydroxypropane-1,2,3-tricarboxylate;Anhydrous Citric Acid;

• CAS NO :

  77-92-9

• EC NO :

  201-069-1

• Molecular Formula :

  C₆H₈O₇

• Molecular Weight :

  192.122

• Main Specifications :

  10-40mesh,30-100mesh

• InChI :

  InChI=1/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)/p-3

• Packing :

  1). Net 25 kg kraft bags2). Net 25 kg carton

• Product description :

  Introduction.:
  Citric acid, at room temperature, is a white crystalline powder. It can exist either in an anhydrous form or as a monohydrate. The anhydrous form crystallizes from hot water, whereas the monohydrate forms when citric acid is crystallized from cold water. The monohydrate can be converted to the anhydrous form by heating above 78^οC. Citric acid also dissolves in absolute (anhydrous) ethanol (76 parts of citric acid per 100 parts of ethanol) at 15 degrees Celsius.
  In chemical structure, citric acid shares the properties of other carboxylic acids. When heated above 175^οC, it decomposes through the loss of carbon dioxide and water. Citric acid leaves a white crystalline precipitate.

  Product Identification.:
  Product name: Citric acid anhydrous
  Synonyms: 2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxytricarballylic acid
  Molecular Formula: C6H8O7
  Molecular Weight: 192.12
  Molecular structure: →
  CASE NO: 77-92-9
  Product Grade: Food grade

  Physical & Chemical Properties.:
  Citric acid is a colorless translucent crystals or white granules or white crystalline powder, no smell.
  Soluble in water, ethanol, ethyl ether, insoluble in benzene, slightly soluble in chloroform.
  Citric acid is a strong organic acids, there are three H + can be ionization; when heated can be decomposed into variety of products; it can reacted with acid, alkali, glycerol, etc.

  Application.:
  As a food additive, citric acid is used as a acidulating, flavoring and preservative in food and beverages, especially soft drinks. It is denoted by E number E330.
  Citric acid is used in biotechnology and the pharmaceutical industry to passivate high-purity process piping (in lieu of using nitric acid). Nitric acid is considered hazardous to dispose once used for this purpose, while citric acid is not.
  It is also used as antioxidant, plasticizer, detergent and builder.

  Packing.:
  1). Net 25 kg kraft bags
  2). Net 25 kg carton
  3). According to customers'requirement

  Quality standard.: (see table)
  The quality conforms to BP/USP/FCC/E330 Standard.

  Citric acid anhydrous index
  Items	Index
  Content	99.5-101%
  Moisture	≤0.5%
  Sulphated Ash	≤0.05%
  Sulphate	≤150 ppm
  Oxalate	≤350 ppm
  Arsenic	≤1 ppm
  Heavy metal	≤10 ppm
  Lead	≤1 ppm
  Mercury	≤1 ppm
  Iron	≤50 ppm
  Chloride	≤50 ppm
  Aluminum	≤0.2 ppm
  Bacterial endotoxin	≤0.5 IU/mg
  Barium	Pass test
  Readily carbonisable substances	Standard color
  Clarity and colour of solution	20% water solution clarity
  Shelf life	2 years

• Uses :

  used as a acidulating, flavoring and preservative in food and beveragesIt is also used as antioxidant, plasticizer, detergent and builder

• Molecular Structure :