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CAS 7758-23-8 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 3232115/10/2010

CALCIUM DIHYDROGEN PHOSPHATE

Phosphoric acid, calcium salt (2:1)

CALCIUM DIHYDROGEN PHOSPHATE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 7758-23-8

CAS 7758-23-8PubChem CID 24454

Calcium Dihydrogen Phosphate

Calcium bis(dihydrogenphosphate) is a calcium phosphate. It has a role as a fertilizer. — ChEBI

IUPAC name: calcium bis(dihydrogen phosphate)

Molecular formula: CaH4O8P2
Molecular weight: 234.05 g/mol
Exact mass: 233.9007319 Da
Topological polar surface area: 161.0 Å²
Hydrogen-bond donors: 4
Hydrogen-bond acceptors: 8
Covalent units: 3
Defined stereocentres: 0

Also known as

Acid calcium phosphateMonobasic calcium phosphateMonocalcium orthophosphatePrimary calcium phosphateCalcium monobasic phosphateCalcium phosphate (1:2)Phosphoric acid, calcium salt (2:1)C 38 (phosphate)

16 more reported names

Calcium phosphate, monobasicCalcium diorthophosphateCalcium tetrahydrogen phosphateCalcium tetrahydrogen orthophosphate701EKV9RMNCalcium bisphosphateCalcium hydrogen phosphate (Ca(H2PO4)2)RefChem:122782CaH4O8P2Calcium phosphate monobasicCalcium biphosphateMonocalcium phosphateCalcium DihydrogenphoshateMonocalcium phosphate, monobasicCalcium dihydrogenphosphatecalcium;dihydrogen phosphate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:35433
EPA DTXSID:DTXSID2044262

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for CALCIUM DIHYDROGEN PHOSPHATE

INCI name

CALCIUM DIHYDROGEN PHOSPHATE

Description

Phosphoric acid, calcium salt (2:1)

Record provenance

Inventory reference: 32321
Imported identity: CALCIUM DIHYDROGEN PHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for CALCIUM DIHYDROGEN PHOSPHATE

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Key data

CAS

7758-23-8

231-837-1

Restriction

—

Function

BUFFERING: Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#4926 · CALCIUM DIHYDROGEN PHOSPHATE

Ingredients with overlapping formulation functions

BUTYL DIETHANOLAMINEBUFFERING

BUTYLETHANOLAMINEBUFFERING

CALCIUM CARBONATEABRASIVE, BUFFERING, BULKING, OPACIFYING, ORAL CARE

CALCIUM CITRATEBUFFERING

CALCIUM GLYCINATEBUFFERING, SKIN CONDITIONING

CALCIUM HYDROXIDEBUFFERING

CALCIUM LACTATEASTRINGENT, BUFFERING, KERATOLYTIC

CALCIUM OXIDEBUFFERING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How CALCIUM DIHYDROGEN PHOSPHATE appears in the CosIng inventory

The CosIng inventory lists CALCIUM DIHYDROGEN PHOSPHATE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CALCIUM DIHYDROGEN PHOSPHATE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

CALCIUM DIHYDROGEN PHOSPHATE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, CALCIUM DIHYDROGEN PHOSPHATE carries the following function designation(s):

BUFFERING

CAS 7758-23-8 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for CALCIUM DIHYDROGEN PHOSPHATE

This page reproduces the CosIng inventory entry for CALCIUM DIHYDROGEN PHOSPHATE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research CALCIUM DIHYDROGEN PHOSPHATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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