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InventoryRef 3803015/10/2010

SODIUM PHOSPHATE

Sodium dihydrogenorthophosphate

SODIUM 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 7558-80-7

CAS 7558-80-7PubChem CID 23672064

Monosodium phosphate

Sodium dihydrogenphosphate is a sodium phosphate. — ChEBI

IUPAC name: sodium dihydrogen phosphate

Molecular formula: H2NaO4P
Molecular weight: 119.977 g/mol
Exact mass: 119.95883982 Da
Topological polar surface area: 80.6 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

Sodium acid phosphateSodium phosphate, monobasicSodium primary phosphateAcid sodium phosphateMonosodium monophosphateMonobasic sodium phosphateMonosodium dihydrogen orthophosphateMonosodium phosphate, anhydrous

16 more reported names

Monosodium orthophosphateMonosorb XP-4Primary sodium phosphateSodium dihydrogen phosphate, anhydrousSodium phosphate (Na(H2PO4))Sodium biphosphate anhydrousMonosodium hydrogen phosphateSodium biphosphate, anhydrousSodium orthophosphate, primarySodium dihydrogen monophosphateSodium orthophosphate monobasicSodium phosphate,monobasicKH7I04HPUUSodium dihydrogen phosphate (1:2:1)Sodium monobasic phosphate (NaH2PO4)Sodium dihydrogen phosphate (NaH2PO4)

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:37585
ChEMBL:CHEMBL1368
EPA DTXSID:DTXSID7035222
PubMed:23398154
PubMed:20958267
PubMed:19298584
PubMed:18645612
PubMed:17652123
PubMed:10012

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 SODIUM PHOSPHATE

INCI name

SODIUM PHOSPHATE

INN name

sodium phosphate, monobasic

Ph. Eur. name

natrii dihydrogenophosphas

Description

Sodium dihydrogenorthophosphate

Record provenance

Inventory reference: 38030
Imported identity: SODIUM PHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for SODIUM PHOSPHATE

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Key data

CAS

7558-80-7 / 7632-05-5

231-449-2 / 231-558-5

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.

#26927 · SODIUM PHOSPHATE

Ingredients with overlapping formulation functions

SODIUM METAPHOSPHATEBUFFERING, CHELATING, ORAL CARE

SODIUM METASILICATEANTICORROSIVE, BUFFERING, CHELATING

SODIUM N-HYALURONOYL GLUTAMATEBUFFERING; HUMECTANT

SODIUM OXIDEBUFFERING

SODIUM SESQUICARBONATEBUFFERING, BULKING, CLEANSING

SODIUM SILICATEANTICORROSIVE, BUFFERING

SODIUM SUCCINATEBUFFERING

SODIUM TRIMETAPHOSPHATEANTICAKING, BUFFERING, CHELATING

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 SODIUM PHOSPHATE appears in the CosIng inventory

The CosIng inventory lists SODIUM 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.

SODIUM 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

SODIUM 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, SODIUM PHOSPHATE carries the following function designation(s):

BUFFERING

CAS 7558-80-7 / 7632-05-5 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 SODIUM PHOSPHATE

This page reproduces the CosIng inventory entry for SODIUM 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 SODIUM 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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Tools & next steps

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