What other records share CAS 85-44-9?

CAS 85-44-9 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 PHTHALIC ANHYDRIDE?

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 9592824/04/2018

PHTHALIC ANHYDRIDE

1,3-Isobenzofurandione

PHTHALIC ANHYDRIDE 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 85-44-9

CAS 85-44-9PubChem CID 6811

Phthalic Anhydride

Phthalic anhydride appears as a colorless to white lustrous solid in the form of needles with a mild distinctive odor. Moderately toxic by inhalation or ingestion and a skin irritant. Melting point 64 °F Flash point 305 °F. Forms a corrosive solution when mixed with water. Used in the manufacture of materials such as artificial resins. — CAMEO Chemicals

IUPAC name: 2-benzofuran-1,3-dione

Molecular formula: C8H4O3
Molecular weight: 148.11 g/mol
Exact mass: 148.016043985 Da
XLogP3: 1.3
Topological polar surface area: 43.4 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

1,3-IsobenzofurandionePhthalandioneRetarder esen1,3-Dioxophthalan1,3-PhthalandionePhthalic acid anhydrideRetarder AKRetarder PD

16 more reported names

o-Phthalic acid anhydridePhthalsaeureanhydridESENVulkalent B/CAnidride ftalicaFtalowy bezwodnikFtaalzuuranhydrideAnhydride phtaliqueFtalanhydrid1,2-Benzenedicarboxylic anhydride1,2-Benzenedicarboxylic acid anhydrideVulkalent BWiltrol PRCRA waste number U190NCI-C03601TGL 6525

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:36605
ChEMBL:CHEMBL1371297
EPA DTXSID:DTXSID2021159
PubMed:29540657
PubMed:27129696
PubMed:26795242
PubMed:22381623
PubMed:21920952
PubMed:21581900
PubMed:21579766
PubMed:21252390
PubMed:21049990
PubMed:20491607
PubMed:20396882
PubMed:20219652

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 PHTHALIC ANHYDRIDE

INCI name

PHTHALIC ANHYDRIDE

Description

1,3-Isobenzofurandione

Record provenance

Inventory reference: 95928
Imported identity: PHTHALIC ANHYDRIDE
Source update: 24/04/2018

European Commission CosIng source notes

Annex records for PHTHALIC ANHYDRIDE

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 PHTHALIC ANHYDRIDE or related substances.

Key data

CAS

85-44-9

201-607-5

Restriction

—

Function

NOT REPORTED: No function currently reported.

Official EU ingredient-name evidence

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

#20816 · PHTHALIC ANHYDRIDE

Ingredients with overlapping formulation functions

PERFLUOROPROPYLENENOT REPORTED

PHALAENOPSIS APHRODITE EMBRYO EXTRACTNOT REPORTED

PHENOLPHTHALEINNOT REPORTED

PHOSPHORUSNOT REPORTED

PHYLLOSTACHYS PUBESCENS BARK EXTRACTNOT REPORTED

PHYTELEPHAS AEQUATORIALIS SEED POWDERNOT REPORTED

PHYTOLACCA DECANDRA ROOT EXTRACTNOT REPORTED

PIMPINELLA ANISUM EXTRACTNOT REPORTED

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 PHTHALIC ANHYDRIDE appears in the CosIng inventory

The CosIng inventory lists PHTHALIC ANHYDRIDE 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.

PHTHALIC ANHYDRIDE 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

PHTHALIC ANHYDRIDE 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, PHTHALIC ANHYDRIDE carries the following function designation(s):

NOT REPORTED

CAS 85-44-9 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 PHTHALIC ANHYDRIDE

This page reproduces the CosIng inventory entry for PHTHALIC ANHYDRIDE 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 PHTHALIC ANHYDRIDE 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 PHTHALIC ANHYDRIDE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

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