Is WATER safe to use in EU cosmetics?

WATER is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 7732-18-5?

CAS 7732-18-5 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.

How do I check if my formula contains WATER?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 9247215/03/2016

WATER

Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water

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

INCI Checker Compare all markets Search similar

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.

Markets and their official sources Search every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 7732-18-5

CAS 7732-18-5PubChem CID 962

Water

Water appears as a clear, nontoxic liquid composed of hydrogen and oxygen, essential for life and the most widely used solvent. Include water in a mixture to learn how it could react with other chemicals in the mixture. — CAMEO Chemicals

IUPAC name: oxidane

Molecular formula: H2O
Molecular weight: 18.015 g/mol
Exact mass: 18.010564683 Da
XLogP3: -0.5
Topological polar surface area: 1.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

Distilled waterDihydrogen oxidePurified waterSterile waterWater vaporWater, deionizedaquaWater, purified

16 more reported names

Water, mineralDihydrogen MonoxidesteamDeionized waterDHMOWater, sterileWater, distilledWater for injectionSterile purified waterWater for hemodialysisWater purifiedSterile water for irrigationPur-washWater, purified sterileWater, sterile purifiedUltrex ii ultrapure

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:15377
ChEBI:CHEBI:197504
ChEBI:CHEBI:25805
ChEMBL:CHEMBL1098659
EPA DTXSID:DTXSID00170378
EPA DTXSID:DTXSID6026296
PubMed:30203046
PubMed:29860548
PubMed:22860104
PubMed:22490669
PubMed:20079347
PubMed:19444861
PubMed:15031485
PubMed:10628300

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

What the official INCI name states

The official label identifies a biological source material and its stated preparation or plant part.

Identity type from wording: biological_material
Preparation or form: WATER

This structure is derived only from the official label wording. It does not establish composition, concentration, chemical equivalence, safety or regulatory permission.

Inventory details for WATER

INCI name

WATER

Description

Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water

Record provenance

Inventory reference: 92472
Imported identity: WATER
Source update: 15/03/2016

European Commission CosIng source notes

Annex records for WATER

Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search annex entries

Search the annex database for entries matching WATER or related substances.

Key data

CAS

7732-18-5

231-791-2 (I)

Restriction

—

Function

ANTIPLAQUE: Helping protect against plaque.
SKIN CONDITIONING: Maintaining the skin in good condition.
SOLVENT: Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).

Official EU ingredient-name evidence

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

#30068 · WATER

Records sharing a CAS or EC identity

AQUA

Ingredients with overlapping formulation functions

TETRAPEPTIDE-61ANTIOXIDANT, ANTIPLAQUE, HAIR CONDITIONING, SKIN CONDITIONING, SKIN PROTECTING

TRIPEPTIDE-62ANTIOXIDANT, ANTIPLAQUE, ORAL CARE, SKIN PROTECTING

TRIPEPTIDE-66ANTIOXIDANT, ANTIPLAQUE, HAIR CONDITIONING, NAIL CONDITIONING, SKIN PROTECTING

TRIPEPTIDE-67ANTIOXIDANT, ANTIPLAQUE, SKIN CONDITIONING, SKIN PROTECTING

ZINC CITRATEANTIPLAQUE, ORAL CARE

ZINC PHOSPHATEANTIPLAQUE

ZINC SULFATEANTIMICROBIAL, ANTIPLAQUE, ASTRINGENT, ORAL CARE

ZINC/STRONTIUM FLUORIDE HYDROXYAPATITEANTIPLAQUE

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 WATER appears in the CosIng inventory

The CosIng inventory lists WATER 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.

WATER 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

WATER 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, WATER carries the following function designation(s):

CAS 7732-18-5 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.

View CAS records

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Open INCI Checker

Source note for WATER

This page reproduces the CosIng inventory entry for WATER 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 WATER and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect WATER and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to WATER, its identifiers or nearby name variants.