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InventoryRef 5929915/10/2010

PHOSPHORUS PENTOXIDE

Phosphorus pentoxide

PHOSPHORUS PENTOXIDE 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 1314-56-3
CAS 1314-56-3PubChem CID 6326975

Phosphorus pentoxide

Diphosphonate(2-) is a divalent inorganic anion obtained by removal of both protons from diphosphonic acid. It is a phosphorus oxoanion and a divalent inorganic anion. It is a conjugate base of a diphosphonate(1-). — ChEBI

Molecular formula
O5P2
Molecular weight
141.94 g/mol
Exact mass
141.92209709 Da
XLogP3
-2.1
Topological polar surface area
77.5 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

Phosphorus(V) oxidediphosphonatePhosphorus (V) pentoxidediphosphonate(2-)Phosphorus oxide (P2O5)O5P2DiphosphorpentaoxidPhosphorus (V) oxide
8 more reported names
CHEBI:29262XQRLCLUYWUNEEH-UHFFFAOYSA-LYWEUIGNSBFLMFL-UHFFFAOYSA-NP2H2O5(2-)BP-21050mu-oxido-bis(hydridodioxidophosphate)(2-)[O2P(H)OP(H)(O)2](2-)P1746
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 PHOSPHORUS PENTOXIDE

INCI name

PHOSPHORUS PENTOXIDE

Description

Phosphorus pentoxide

Record provenance

Inventory reference
59299
Imported identity
PHOSPHORUS PENTOXIDE
Source update
15/10/2010
European Commission CosIng source notes
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Key data

CAS
1314-56-3
EC
215-236-1
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.
CHELATING
Forming complexes with metal ions which could affect the stability and/or appearance of cosmetics.

Official EU ingredient-name evidence

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

#20806 · PHOSPHORUS PENTOXIDE

Ingredients with overlapping formulation functions

PENTASODIUM PENTETATECHELATING
PENTASODIUM TRIPHOSPHATEBUFFERING, CHELATING
PENTETIC ACIDCHELATING
PHOSPHONOBUTANETRICARBOXYLIC ACIDANTICORROSIVE, BUFFERING, CHELATING
PHYTIC ACIDCHELATING
POLYACRYLATE-39BINDING, CHELATING
POTASSIUM CITRATEBUFFERING, CHELATING
POTASSIUM EDTMPCHELATING

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 PHOSPHORUS PENTOXIDE appears in the CosIng inventory

The CosIng inventory lists PHOSPHORUS PENTOXIDE 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.

PHOSPHORUS PENTOXIDE is also tagged with 2 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

PHOSPHORUS PENTOXIDE 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, PHOSPHORUS PENTOXIDE carries the following function designation(s):

CAS 1314-56-3 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 PHOSPHORUS PENTOXIDE

This page reproduces the CosIng inventory entry for PHOSPHORUS PENTOXIDE 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 PHOSPHORUS PENTOXIDE 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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