Methyl 4-isocyanatobenzoate

4-异氰酰基苯甲酸甲酯

Also known as: 4-Isocyanato-benzoesaeure-methylester, 4-Methoxycarbonyphenyl isocyanate, 4-carbomethoxyphenyl isocyanate, 4-isocyanatobenzoic acid methyl ester, 4-methoxycarbonylphenyl isocyanate, Benzoic acid, 4-isocyanato-, methyl ester, Methyl 4-isocyanatobenzoate, MFCD01863690

Methyl 4-isocyanatobenzoate (CAS 23138-53-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H7NO3 and a molecular weight of 177.15700 g/mol. It is also known as 4-Isocyanato-benzoesaeure-methylester, 4-Methoxycarbonyphenyl isocyanate and 4-carbomethoxyphenyl isocyanate. Key properties include a melting point of 50-52ºC(lit.), a boiling point of 264.9ºC at 760mmHg, a density of 1.15g/cm3 and a flash point of 123.2ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
23138-53-6
Jingsj CID
J-11043-9
Molecular Formula
C9H7NO3
Chinese Name
4-异氰酰基苯甲酸甲酯
Molecular Weight
177.15700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point50-52ºC(lit.)
Boiling Point264.9ºC at 760mmHg
Density1.15g/cm3
Flash Point123.2ºC

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Methyl 4-isocyanatobenzoate?

The CAS number of Methyl 4-isocyanatobenzoate is 23138-53-6.

What are the molecular formula and molecular weight of Methyl 4-isocyanatobenzoate?

Methyl 4-isocyanatobenzoate has molecular formula C9H7NO3 and molecular weight 177.15700 g/mol.

Is Methyl 4-isocyanatobenzoate hazardous?

Methyl 4-isocyanatobenzoate 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. "Methyl 4-isocyanatobenzoate (CAS 23138-53-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11043-9 (accessed 2026-10-24).

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