Calcium Pyrophosphate

Description

Calcium Pyrophosphate · CAS 7790-76-3 · Ca2P2O7. UNII X69NU20D19. Melting Point: 1353 °C; Density: 3.09.

Identification

CAS Registry Number	7790-76-3
PubChem CID	24632
Molecular formula	Ca2P2O7
IUPAC name	dicalcium;phosphonato phosphate
UNII (FDA)	X69NU20D19

Computed Descriptors

Molecular Weight	254.10
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	0
Exact Mass	253.8371080
Monoisotopic Mass	253.8371080
Topological Polar Surface Area	136
Heavy Atom Count	11
Formal Charge	0
Complexity	124

Physical & Chemical Properties

Melting Point	1353 °C
Density	3.09

Physical description & handling notes

• Dry Powder
• A fine, white, odourless powder
• Crystals or powder; Insoluble in water; [Merck Index] White powder; Insoluble in water; [MSDSonline]
• Polymorphous crystals or powder
• White powder
• Insoluble in water. Soluble in dilute hydrochloric and nitric acids

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: NUTRIENT SUPPLEMENT ACIDITY_REGULATOR; YEAST_FOOD: Food Additives Group MTDI for phosphorus from all sources, expressed as P TRS 683-JECFA 26/25 FAS 17-JECFA 26/151 CIR / INCI: Cosmetic ingredients (Calcium Pyrophosphate) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	20.4% (11 / 54)

GHS Hazard Classification

GHS notification summary	20.4% (11 / 54)
Reported hazard statements	H315 (79.6%), H319 (79.6%), H335 (79.6%)

Documented Uses

• CIR ingredient: Calcium Pyrophosphate
• Used as a fertilizer, dietary and feed supplement, and mild abrasive for metal polishing; Also used in dentifrices, dental abrasives, ceramic ware, china, glass, and phosphors; [HSDB]
• Abrasive Blasting [Category: Clean]
• Glass Manufacturing [Category: Industry]
• Farming (Feed Additives) [Category: Industry]
• Abrasive; fertilizer; feed supplement; in dentifrices, ceramic ware, china, glass, phosphors

Synonyms

CALCIUM PYROPHOSPHATE; 7790-76-3; Dicalcium pyrophosphate; Diphosphoric acid, calcium salt; Diphosphoric acid, calcium salt (1:2); Calcium pyrophosphate (Ca2P2O7); Calcium phosphate (Ca2P2O7); Pyrophosphoric acid, calcium salt (1:2); X69NU20D19; CHEBI:32598; DTXSID50872512; Diphosphate, Calcium; Pyrophosphate, Calcium; RefChem:122901; Pyrophosphate Dihydrate, Calcium; Monohydrate Calcium Pyrophosphate

Frequently Asked Questions

What are the CAS number and molecular formula of Calcium Pyrophosphate?

CAS 7790-76-3; molecular formula Ca2P2O7; molecular weight — g/mol.

What other names is Calcium Pyrophosphate known by?

CALCIUM PYROPHOSPHATE, 7790-76-3, Dicalcium pyrophosphate, Diphosphoric acid, calcium salt, Diphosphoric acid, calcium salt (1:2), Calcium pyrophosphate (Ca2P2O7).

What is the regulatory status of Calcium Pyrophosphate?

Documented regulatory listings: FDA Substance added to food: NUTRIENT SUPPLEMENT; ACIDITY_REGULATOR; YEAST_FOOD: Food Additives; Group MTDI for phosphorus from all sources, expressed as P.

Is Calcium Pyrophosphate classified as hazardous?

20.4% of GHS notifications report no hazard classification (11 of 54).

What are the key physical properties of Calcium Pyrophosphate?

Melting Point: 1353 °C; Density: 3.09.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.