Methallyl isothiocyanate

甲代烯丙基异硫氰酸酯

Also known as: 1-Propene, 3-isothiocyanato-2-methyl-, 2-methyl-2-propenyl isothiocyanate, 2-methyl-3-isothiocyanato-propene, 2-methyl-allyl isothiocyanate, 3-isothiocyanato-2-methylprop-1-ene, Methallyl isothiocyanate technical

Methallyl isothiocyanate (CAS 41834-90-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H7NS and a molecular weight of 113.18100 g/mol. It is also known as 1-Propene, 3-isothiocyanato-2-methyl-, 2-methyl-2-propenyl isothiocyanate and 2-methyl-3-isothiocyanato-propene. Key properties include a boiling point of 69ºC20 mm Hg(lit.), a density of 0.993 g/mL at 25ºC(lit.) and a flash point of 134 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
41834-90-6
Jingsj CID
J-46471-2
Molecular Formula
C5H7NS
Chinese Name
甲代烯丙基异硫氰酸酯
Molecular Weight
113.18100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point69ºC20 mm Hg(lit.)
Density0.993 g/mL at 25ºC(lit.)
Flash Point134 °F

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Methallyl isothiocyanate?

The CAS number of Methallyl isothiocyanate is 41834-90-6.

What are the molecular formula and molecular weight of Methallyl isothiocyanate?

Methallyl isothiocyanate has molecular formula C5H7NS and molecular weight 113.18100 g/mol.

Is Methallyl isothiocyanate hazardous?

Methallyl isothiocyanate has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Methallyl isothiocyanate (CAS 41834-90-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46471-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.