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InventoryRef 3365015/10/2010

DISODIUM PHOSPHATE

Disodium hydrogenorthophosphate

DISODIUM 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 7558-79-4
CAS 7558-79-4PubChem CID 24203

Sodium Phosphate, Dibasic

Disodium hydrogenphosphate is a sodium phosphate. — ChEBI

IUPAC name
disodium;hydrogen phosphate
Molecular formula
HNa2O4P
Molecular weight
141.959 g/mol
Exact mass
141.94078407 Da
Topological polar surface area
83.4 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
4
Covalent units
3
Defined stereocentres
0

Also known as

Sodium phosphate dibasicDISODIUM PHOSPHATEDisodium hydrogen phosphateDisodium hydrogenorthophosphateAcetestDibasic sodium phosphateDisodium acid phosphateSoda phosphate
16 more reported names
Exsiccated sodium phosphatedisodium hydrogenphosphateDisodium orthophosphatePhosphoric acid, disodium saltSodium hydrogen phosphateSodium monohydrogen phosphatesecondary Sodium phosphatePhosphate of sodaNatriumphosphatDisodium phosphate, anhydrousFEMA No. 2398Fleet enemaCaswell No. 778Disodium acid orthophosphateDisodium hydrophosphateDisodium phosphoric acid
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

PubChem 2D chemical structure for CAS 7782-85-6
CAS 7782-85-6PubChem CID 6096963

Phosphoric acid, disodium salt, heptahydrate

IUPAC name
disodium;hydrogen phosphate;heptahydrate
Molecular formula
H15Na2O11P
Molecular weight
268.07 g/mol
Exact mass
268.01473685 Da
Topological polar surface area
90.4 Ų
Hydrogen-bond donors
8
Hydrogen-bond acceptors
11
Covalent units
10
Defined stereocentres
0

Also known as

RefChem:56035Sodium phosphate dibasic heptahydrateSodium phosphate, dibasic, heptahydrateDisodium phosphate heptahydrateUNII-70WT22SF4B70WT22SF4BSodium hydrogen phosphate heptahydrateSodium phosphate, diabasic, heptahydrate
16 more reported names
Sodium monohydrogen phosphate heptahydrate (2:1:1:7)disodium hydrogenphosphate heptahydrateDIBASIC SODIUM PHOSPHATE HEPTAHYDRATEH15Na2O11PSodiumphosphatedibasicheptahydrateheptahydratedibasicsodium phosphateNATRUM PHOSPHORICUM [HPUS]sodium hydrogenphosphate heptahydrateTSH-00251Sodium hydrogen phosphate--water (2/1/7)SODIUM PHOSPHATE DIBASIC (HEPTAHYDRATE)Sodium phosphate dibasic heptahydrate ACS gradeSodium phosphate dibasic heptahydrate USP gradeSodium monohydrogen phosphate heptahydrate (2:1:7)SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE [II]SODIUM PHOSPHATE, DIBASIC, HEPTAHYDRATE [MI]
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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 DISODIUM PHOSPHATE

INCI name

DISODIUM PHOSPHATE

INN name

sodium phosphate, dibasic

Ph. Eur. name

dinatrii phosphas

Description

Disodium hydrogenorthophosphate

Record provenance

Inventory reference
33650
Imported identity
DISODIUM PHOSPHATE
Source update
15/10/2010
European Commission CosIng source notes
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Key data

CAS
7558-79-4 / 7782-85-6
EC
231-448-7 / -
Restriction
—
Function
ANTICORROSIVE
Preventing and or inhibiting the corrosion of the packaging material.
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.
FRAGRANCE
Imparting an odour or taste. Creating a perceivable pleasant smell and/or masking a bad smell.

Official EU ingredient-name evidence

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

#9419 · DISODIUM PHOSPHATE

Ingredients with overlapping formulation functions

DIMETHYLAMINO METHYLPROPANOLANTICORROSIVE
DIPOTASSIUM OXALATEANTICORROSIVE, CHELATING
DIPOTASSIUM PHOSPHATEANTICORROSIVE, BUFFERING
DISODIUM DODECENYLSUCCINATEANTICORROSIVE
DISODIUM PYROPHOSPHATEANTICORROSIVE, BUFFERING, CHELATING
DISODIUM TETRAPROPENYL SUCCINATEANTICORROSIVE, SURFACTANT - CLEANSING
HEXOXYETHYL DIETHYLAMMONIUM PHOSPHATEANTICORROSIVE
METHOXYPHENYLSULFONAMIDO DIHYDROXYPROPANAMIDEANTICORROSIVE, CHELATING, ORAL CARE

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 chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How DISODIUM PHOSPHATE appears in the CosIng inventory

The CosIng inventory lists DISODIUM 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.

DISODIUM PHOSPHATE is also tagged with 3 cosmetic functions 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

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

CAS 7558-79-4 / 7782-85-6 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 DISODIUM PHOSPHATE

This page reproduces the CosIng inventory entry for DISODIUM 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 DISODIUM 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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