Calcium acid pyrophosphate

酸式焦磷酸钙

Also known as: Calcium dihydrogen pyrophosphate, Diphosphoric acid, calcium salt (1:1), Acid calcium pyrophosphate

Calcium acid pyrophosphate (CAS 35405-51-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula CaH2O7P2 and a molecular weight of 216.03700 g/mol. It is also known as Calcium dihydrogen pyrophosphate, Diphosphoric acid, calcium salt (1:1) and Acid calcium pyrophosphate. Key properties include a melting point of 1230ºC and a density of 3.09 g/mL at 25ºC(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
35405-51-7
Jingsj CID
J-1413543-1
Molecular Formula
CaH2O7P2
Chinese Name
酸式焦磷酸钙
Molecular Weight
216.03700 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point1230ºC
Density3.09 g/mL at 25ºC(lit.)

Frequently Asked Questions

What is the CAS number of Calcium acid pyrophosphate?

The CAS number of Calcium acid pyrophosphate is 35405-51-7.

What are the molecular formula and molecular weight of Calcium acid pyrophosphate?

Calcium acid pyrophosphate has molecular formula CaH2O7P2 and molecular weight 216.03700 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Calcium acid pyrophosphate (CAS 35405-51-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1413543-1 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.