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CAS 1 record

CAS 71850-09-4

CAS 71850-09-4 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 71850-09-4
CAS 71850-09-4PubChem CID 8970

Diisohexyl phthalate

Diisohexyl phthalate is a phthalate ester. Phthalate esters are esters of phthalic acid and are mainly used as plasticizers, primarily used to soften polyvinyl chloride. They are found in a number of products, including glues, building materials, personal care products, detergents and surfactants, packaging, children's toys, paints, pharmaceuticals, food products, and textiles. Phthalates are hazardous due to their ability to act as endocrine disruptors. They are being phased out of many products in the United States and European Union due to these health concerns. (L1903) — Toxin and Toxin Target Database (T3DB)

IUPAC name
bis(4-methylpentyl) benzene-1,2-dicarboxylate
Molecular formula
C20H30O4
Molecular weight
334.4 g/mol
Exact mass
334.21440943 Da
XLogP3
6.3
Topological polar surface area
52.6 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

146-50-91,2-Benzenedicarboxylic acid, diisohexyl ester1,2-Benzenedicarboxylic acid, bis(4-methylpentyl) ester1,2-Benzenedicarboxylic acid diisohexyl esterdiisohexyl benzene-1,2-dicarboxylateBis(4-methylpentyl) 1,2-benzenedicarboxylateEINECS 276-090-2Phthalic acid diisohexyl ester
16 more reported names
Phthalic acid di(4-methylpentyl) esterDiisohexyl phthalic acidRefChem:5878321,2-bis(4-methylpentyl) benzene-1,2-dicarboxylate276-090-2690-072-5Bis(4-methylpentyl) phthalateBis(4-methylpentyl)phthalatePhthalic acid, bis-4-methylpentyl esterPhthalic acid, diisohexyl ester1,2-Benzenedicarboxylic acid, bis(4-methylpentyl) ester (9CI); Bis(4-methylpentyl) phthalate;1,2-Benzenedicarboxylic acid, 1,2-bis(4-methylpentyl) esterdi-isohexyl phthalateBis(4-methylpentyl) phthalate #MSK1153Phthalic acid, di(4-methylpentyl) esterDB-318774
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 71850-09-4

1 total

How CAS 71850-09-4 is used on this site

CAS 71850-09-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 71850-09-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 71850-09-4 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

The INCI Checker accepts ingredient names, CAS numbers and EC numbers. Check this CAS number directly, then verify the result against supplier specification sheets and every linked annex condition.
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