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Calcium Hydrogen Phosphate

In some countries, this medicine may only be approved for veterinary use.

CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Food additive (e number)

Pharmaceutic aid

Mineral supplement

Chemical Names

Calcium phosphate (1:1) (USP)

Phosphoric acid, calcium salt (1:1) (USP)

Foreign Names

  • Calcii hydrogenophosphas anhydricus (Latin)
  • Calciumhydrogenphosphat, wasserfreies (German)
  • Calcium (hydrogénophosphate de) anhydre (French)
  • Calcio, hidrogenofosfato de (Spanish)

Generic Names

  • Anhydrous Dibasic Calcium Phosphate (OS: JAN)
  • Calcio fosfato (IS)
  • Calcio fosfato dibasico anidro (IS)
  • Calcium hydrogen orthophosphate (IS)
  • Calcium hydrogenophosphoricum (IS)
  • Calcium hydrogenophosphoricum siccum (IS)
  • Calcium Monohydrogen Phosphate (IS)
  • E 341 (IS)
  • Fosfato dibásico de calcio (IS)
  • Secondary calcium phosphate (IS)
  • UNII-L11K75P92J (IS)
  • Anhydrous Dibasic Calcium Phosphate (PH: JP XVII)
  • Calcii hydrogenophosphas anhydricus (PH: Ph. Eur. 9)
  • Calcium (hydrogénophosphate de) anhydre (PH: Ph. Eur. 9)
  • Calcium hydrogen phosphate (PH: Ph. Int. 7)
  • Calcium Hydrogen Phosphate, Anhydrous (PH: BP 2016)
  • Calcium hydrogen phosphate, anhydrous (PH: Ph. Eur. 9)
  • Calcium hydrogenophosphas (PH: Ph. Int. 7)
  • Monobasic Calcium Phosphate Hydrate (PH: JP XVII)
  • Wasserfreies Calciumhydrogenphosphat (PH: Ph. Eur. 9)
  • Dibasic Calcium Phosphate Hydrate (OS: JAN)
  • Calcio fosfato dibasico diidrato (IS)
  • Calciumhydrogenphosphat-2-Wasser (IS)
  • E 341 (IS)
  • Secondary Calcium Phosphate (IS)
  • Sekundäres Calciumphosphat (IS)
  • Calcii hydrogenophosphas (PH: Ph. Int. 7)
  • Calcii hydrogenophosphas dihydricus (PH: Ph. Eur. 9)
  • Calcium (hydrogénophosphate de) dihydraté (PH: Ph. Eur. 9)
  • Calcium Hydrogen Phosphate (PH: BP 2018, Ph. Int. 7)
  • Calcium hydrogen phosphate dihydrate (PH: Ph. Eur. 9)
  • Calcium Hydrogen Phosphate Dihydrate (PH: BP 2018)
  • Calciumhydrogenphosphat-Dihydrat (PH: Ph. Eur. 9)
  • Dibasic Calcium Phosphate Hydrate (PH: JP XVII)

Brand Names


ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
USPPharmacopoeia of the United States

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.