CALCIUM PYROPHOSPHATE

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1.What is the CALCIUM PYROPHOSPHATE ?

white powder

Calcium pyrophosphate has the molecular formula of Ca2P2O7 and the molecular weight of 254.1378 g/mol. It has the CAS number of 7790-76-3. It may be prepared by the solid-state reaction of the dibasic orthophosphate, or alternately by the precipitation of a soluble Ca salt with aqueous pyrophosphoric acid: 2CaHPO4 + heat ? Ca2P2O7 +H2O CaCl2 (aq) +H4P2O7 (aq) ? Ca2P2O7 (solid) + 2HCl (aq) The solid-state reaction produces an amorphous crystal at 240–500°C. b-Ca2P2O7 forms >750°C and a-Ca2P2O7 forms in the temperature range of 1140 to 1350°C. The free energy of formation, △Gf=-3132 kcal/mol. The product of the aqueous method is the dihydrate, Ca2P2O7·2H2O. It is a white powder and has the CAS number of 7790-76-3. It is insoluble in water but soluble in dilute acids. The anhydrate decomposes at 1353°C to form a metaphosphate: Ca2P2O7 + heat ? Ca(PO3)2 + CaOCalcium pyrophosphate is dimorphic. The phase transformation and sintering behaviors of Ca2P2O7 with different phase composition has been investigated by using X-ray powder diffraction (XRD), dilatometery and SEM techniques. It was found that although α-Ca2P2O7 (high-temperature form) could be maintained during its cooling process, it was metastable and retransformed into β-Ca2P2O7 (low-temperature form) at about 950 °C during its reheating process.

2.What is the CAS number for CALCIUM PYROPHOSPHATE ?

The CAS number of CALCIUM PYROPHOSPHATE is 7790-76-3.

3.What are another words for CALCIUM PYROPHOSPHATE ?

Synonyms?for?CALCIUM PYROPHOSPHATE 7790-76-3:Calciumpyrophosphate (Ca₂P₂O₇) (6CI);Pyrophosphoric acid, calcium salt (1:2) (8CI);C54-80;Calcium diphosphate (Ca₂P₂O₇);Calcium phosphate (Ca₂P₂O₇);Dicalcium diphosphate;Dicalcium pyrophosphate;NP 970-10;Calcium pyrophosphate;

4.What is CALCIUM PYROPHOSPHATE (7790-76-3) used for?

Calcium phosphate is used in the production of phosphoric acid and fertilizers. It is used in baking as the acid in a leavening agent. It is also used in cheese products. CALCIUM PYROPHOSPHATE has also been used in gene transfection of cells. It is also being used in the development of contrast agents.

InChI:InChI=1/Ca.H4O7P2/c;1-8(2,3)7-9(4,5)6/h;(H2,1,2,3)(H2,4,5,6)/q+2;/p-2

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