How is the chemical identity of CAS 513-42-8 verified against its isomers?

Identity is confirmed through the specific positioning of the methyl group on the second carbon of the propene chain (2-methylprop-2-en-1-ol), which distinguishes its reactivity profile from linear butenols or allyl alcohol.

Is this product intended for laboratory research or industrial formulation?

This substance is supplied as an industrial intermediate intended for use in chemical manufacturing processes and resin formulation, rather than for analytical laboratory reagents or consumer-end applications.

Methallyl Alcohol CAS 513‑42‑8

Methallyl Alcohol, also known as 2‑methyl‑2‑propen‑1‑ol, methallyl hydroxide, or isobutenyl alcohol, refers to the same unsaturated alcohol compound. Identified by CAS 513‑42‑8, it contains both a terminal hydroxyl group and a substituted olefinic bond, enabling participation in esterification and polymer‑related reactions. In industrial processing, it is primarily used as an intermediate for polymer modification, where it introduces reactive allylic functionality into downstream resins and specialty chemical intermediates.
For industrial supply, this product is available with competitive factory pricing, customized specifications, and complete documentation including MSDS, TDS, COA, supporting bulk supply for manufacturing applications.

CAS: 513-42-8
Synonyms: Methallyl Alcohol, 2-Methyl-2-propen-1-ol, Isobutenyl Alcohol, Methallyl Hydroxide
Einecs: 208-161-0
Molecular Formula: C4H8O
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packaging

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Product Description

2-Methyl-2-propen-1-ol

alias: beta-Methallyl alcohol = 2-Methyl-2-propen-1-ol; Methallyl alcohol; Isopropenyl carbinol; 2-Methylallyl alcohol; 3-Hydroxy-2-methylpropene; ; 2-methylprop-2-en-1-ol

CAS Number: 513-42-8

Molecular formula: C4H8O

Molecular weight: 72.1057

Density: 0.857g/cm3

Melting point: -50°C

Boiling point: 113-115°C

Refractive index: 1.426 (20°C)

Solubility: Soluble in water

Molar refractive index: 21.68

Molar volume (cm3/mol）：86.9

Isotonic specific volume (90.2K): 193.2

Surface tension (dyne/cm): 24.3

Polarization rate (10-24cm3）：8.59

Usage: Used as an intermediate in organic synthesis, used in the synthesis of fragrances, resins, etc

Security terminology

S16：Keep away from sources of ignition – No smoking.

Keep away from fires and do not smoke.

S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Immediately after eye contact, rinse with plenty of water and seek a doctor’s opinion.

S36/37/39：Wear suitable protective clothing, gloves and eye/face protection.

Wear appropriate protective clothing, gloves, and eye/face protection.

FAQ - Technical & Supply Chain

Q:
How is the chemical identity of CAS 513-42-8 verified against its isomers?

A: Identity is confirmed through the specific positioning of the methyl group on the second carbon of the propene chain (2-methylprop-2-en-1-ol), which distinguishes its reactivity profile from linear butenols or allyl alcohol.
Q:
Is this product intended for laboratory research or industrial formulation?

A: This substance is supplied as an industrial intermediate intended for use in chemical manufacturing processes and resin formulation, rather than for analytical laboratory reagents or consumer-end applications.

Documents

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For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

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TDS for key physical and chemical information
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Product name and CAS number
Application or intended end use
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