HEXANE (COMMERCIAL, <54% n-Hexane) AND HEXANE ISOMERS OTHER THAN n-HEXANE: Notice of Intended Change

Molecular formula: C₆H₁₄

HEXANE (COMMERCIAL, MIXED ISOMERS)

CAS number: Various

Synonym: Hexanes, mixed isomers; technical grade hexane

2,2-DIMETHYLBUTANE

CAS number: 75-83-2

Synonym: Neohexane

Chemical structure¹:

2,3-DIMETHYLBUTANE

CAS number: 79-29-8

Synonyms: Diisopropyl, Biisopropyl, 1,1,2,2-Tetramethylethane

Chemical structure²:

2-METHYLPENTANE

CAS number: 107-83-5

Synonyms: Isohexane, 1,1-Dimethylbutane, Dimethylpropylmethane

Chemical structure³:

3-METHYLPENTANE

CAS number: 96-14-0

Synonym: Diethylmethylmethane

Chemical structure⁴:

Hexane (Commercial, < 54% n-hexane)

TLV^®-TWA, 100 ppm

 Skin

A3 — Confirmed Animal Carcinogen with Unknown Relevance to Humans

Hexane Isomers, other than n-hexane

TLV-TWA, 200 ppm

 A3 — Confirmed Animal Carcinogen with Unknown Relevance to Humans

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