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CAS 20338-08-3 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 8026615/10/2010

TITANIUM HYDROXIDE

Tetrahydroxytitanium

TITANIUM HYDROXIDE 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 20338-08-3

CAS 20338-08-3PubChem CID 11400745

Titanium(IV) hydroxide

IUPAC name: titanium;tetrahydrate

Molecular formula: H8O4Ti
Molecular weight: 119.93 g/mol
Exact mass: 119.9901994 Da
Topological polar surface area: 4.0 Å²
Hydrogen-bond donors: 4
Hydrogen-bond acceptors: 4
Covalent units: 5
Defined stereocentres: 0

Also known as

tetrakis(oxidanyl)titaniumTitansauretitanium(4+) tetrahydroxideDB-234034R3H

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID30893907

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 TITANIUM HYDROXIDE

INCI name

TITANIUM HYDROXIDE

Description

Tetrahydroxytitanium

Record provenance

Inventory reference: 80266
Imported identity: TITANIUM HYDROXIDE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for TITANIUM HYDROXIDE

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Key data

CAS

20338-08-3

243-744-3

Restriction

—

Function

BULKING: Non-reactive (chemically inert), solid ingredients that dilute other solids and/or increase the volume of cosmetic products.
OPACIFYING: Reducing transparency or translucency of cosmetics.

Official EU ingredient-name evidence

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

#28905 · TITANIUM HYDROXIDE

Ingredients with overlapping formulation functions

SYNTHETIC SAPPHIREBULKING, OPACIFYING

TALCABRASIVE, ABSORBENT, ANTICAKING, BULKING, OPACIFYING, SKIN PROTECTING

TANAKURA CLAYABSORBENT, BINDING, BULKING

TIN OXIDEABRASIVE, BULKING, OPACIFYING, VISCOSITY CONTROLLING

TOURMALINE POWDERBULKING, COLORANT

TRIMAGNESIUM PHOSPHATEANTICAKING, BULKING, OPACIFYING

TRITICUM VULGARE BRANABRASIVE, BULKING

TRITICUM VULGARE KERNEL FLOURABRASIVE, BULKING, VISCOSITY CONTROLLING

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 TITANIUM HYDROXIDE appears in the CosIng inventory

The CosIng inventory lists TITANIUM HYDROXIDE 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.

TITANIUM HYDROXIDE 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

TITANIUM HYDROXIDE 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, TITANIUM HYDROXIDE carries the following function designation(s):

CAS 20338-08-3 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 TITANIUM HYDROXIDE

This page reproduces the CosIng inventory entry for TITANIUM HYDROXIDE 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 TITANIUM HYDROXIDE 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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