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Calcium hydrogen phosphate dihydrate

Also known as: Dicalcium phosphate dihydrate, Dibasic calcium phosphate dihydrate, Calcium phosphate dibasic dihydrate, Calcium monohydrogen phosphate dihydrate, Calcium hydrogen phosphate dihydrate, Emcompress, DiTab, Calipharm, Bekapress D 2, Phosphoric acid, calcium salt (1:1), dihydrate

Calcium hydrogen phosphate dihydrate (CAS 7789-77-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula CaH5O6P and a molecular weight of 172.09 g/mol. Key properties include a melting point of 109°C -H₂O, a boiling point of 158ºC at 760 mmHg and a density of 2.31. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.
7789-77-7
Jingsj CID
J-927355-6
Molecular Formula
CaH5O6P
Molecular Weight
172.09 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026
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Physicochemical Properties

Melting Point109°C -H₂O
Boiling Point158ºC at 760 mmHg
Density2.31
Exact Mass171.944962
PSA111.69000
Refractive Index1.5394

Activity & Biological Data

Additional Information[1]. Madhurambal G, et al. Crystallization and thermal characterization of calcium hydrogen phosphate dihydrate crystals[J]. Journal of thermal analysis and calorimetry, 2009, 96(1): 73-76. [2]. Elder DP, et al. Pharmaceutical excipients - quality, regulatory and biopharmaceutical considerations. Eur J Pharm Sci. 2016 May 25;87:88-99.

Frequently Asked Questions

What is the CAS number of Calcium hydrogen phosphate dihydrate?

The CAS number of Calcium hydrogen phosphate dihydrate is 7789-77-7.

What are the molecular formula and molecular weight of Calcium hydrogen phosphate dihydrate?

Calcium hydrogen phosphate dihydrate has molecular formula CaH5O6P and molecular weight 172.09 g/mol.

Which suppliers offer Calcium hydrogen phosphate dihydrate?

1 supplier(s) listed; request a quote for pricing.

What are the upstream and downstream products of Calcium hydrogen phosphate dihydrate?

For Calcium hydrogen phosphate dihydrate, Upstream Products: Ammonium dihydrogen phosphate; Downstream Products: Ammonium dihydrogen phosphate, Sodium phosphate monobasic monohydrate.

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

Last updated:

How to cite: Jingsj. "Calcium hydrogen phosphate dihydrate (CAS 7789-77-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-927355-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.