Dicalcium phosphate anhydrous

• Chemical formula           CaHPO4

• Identification           .....CAS/EINECS NO: 7757-93-9/231-826-1

• Process           The most commonly used process to produce dicalcium phosphate                     ..anhydrous is by reacting purified feed grade phosphoric acid
                      ..with quick lime or chalk. Other special production processes can                     ..also be used. Depending on the process, the reaction time and                     ..the raw materials used, the Ca:P ratio will vary. DCP-anhydrous                     ..can also be obtained by dehydration of DCP dihydrate.
  

• Chemical characteristics (typical)

  Total phosphorus	18 - 20.5%
  Soluble phosphorus:
  in 2% citric acid	95%
  in alk. amm. citrate	95%
  Calcium	25 - 27%
  Ca : P ratio	1.2 -1.3 : 1
  pH (1% solution)	4.5 - 6
  Ash insoluble in HCl	0.3 - 0.4%
  Moisture	0.3% - 2.0%
  Undesirable substances	conform to the European Directives

• Physical properties (typical)

  Appearance	powder colour white
  Apparent density	loose 0.6 - 1.0 kg/dm3 tapped 1.1 - 1.2 kg/dm3

• Handling, storage, toxicity

  Handling	avoid dust formation
  Storage	no special precautions
  Shelf life	minimum 3 years
  Toxicity	non toxic

• Specific advantages
            Chemically neutral or weakly acid
            Free flowing
            Non hygroscopic
            High concentration of elements