2-Methylbenzyl isocyanate

2-甲基苄基异氰酸酯

Also known as: 1-(isocyanatomethyl)-2-methylbenzene, 2-tolylmethyl isocyanate, Benzene, 1-(isocyanatomethyl)-2-methyl-, (2-methylphenyl)methanisocyanate

2-Methylbenzyl isocyanate (CAS 56651-58-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H9NO and a molecular weight of 147.17400 g/mol. It is also known as 1-(isocyanatomethyl)-2-methylbenzene, 2-tolylmethyl isocyanate and Benzene, 1-(isocyanatomethyl)-2-methyl-. Key properties include a boiling point of 226 °C(lit.), a density of 1.059 g/mL at 25 °C(lit.) and a flash point of 210 °F. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
56651-58-2
Jingsj CID
J-26904-1
Molecular Formula
C9H9NO
Chinese Name
2-甲基苄基异氰酸酯
Molecular Weight
147.17400 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point226 °C(lit.)
Density1.059 g/mL at 25 °C(lit.)
Flash Point210 °F
Exact Mass147.06800
PSA29.43000
LogP1.83080
Refractive Indexn20/D 1.528(lit.)

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2929109000
Summary2929109000. other isocyanates. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Methylbenzyl isocyanate?

The CAS number of 2-Methylbenzyl isocyanate is 56651-58-2.

What are the molecular formula and molecular weight of 2-Methylbenzyl isocyanate?

2-Methylbenzyl isocyanate has molecular formula C9H9NO and molecular weight 147.17400 g/mol.

Is 2-Methylbenzyl isocyanate hazardous?

2-Methylbenzyl isocyanate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

What are the upstream and downstream products of 2-Methylbenzyl isocyanate?

For 2-Methylbenzyl isocyanate, Upstream Products: 2-(2-Methylphenyl)acetyl chloride, o-Tolylacetic acid.

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

Last updated:

How to cite: Jingsj. "2-Methylbenzyl isocyanate (CAS 56651-58-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26904-1 (accessed 2026-10-28).

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