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ethyl 4-isocyanatobenzoate

Also known as: 4-(Ethoxycarbonyl)phenyl isocyanate, 4-Carbethoxyphenyl isocyanate, 4-Carboethoxyphenyl isocyanate, 4-Isocyanatobenzoic acid ethyl ester, Ethyl p-isocyanatobenzoate, Ethyl para-isocyanatobenzoate, benzoic acid, p-isocyanato-, ethyl ester

ethyl 4-isocyanatobenzoate (CAS 30806-83-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H9NO3 and a molecular weight of 191.18300 g/mol. Key properties include a melting point of 27-29ºC, a boiling point of 118-119ºC (0.8 torr), a density of 1.12g/cm3 and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
30806-83-8
Jingsj CID
J-20452-4
Molecular Formula
C10H9NO3
Molecular Weight
191.18300 g/mol
Category
Organic Acids
Last updated
11/3/2026
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Physicochemical Properties

Melting Point27-29ºC
Boiling Point118-119ºC (0.8 torr)
Density1.12g/cm3
Flash Point>110.0 °C
Exact Mass191.05800
PSA55.73000
LogP1.83060
Refractive Index1.524
Additional PropertyHydrolyses in water.

GHS Safety & Compliance

Irritant / Health HazardSignal word: Danger
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H332 — Harmful if inhaled
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H334 — May cause allergy or asthma symptoms if inhaled
  • 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 ethyl 4-isocyanatobenzoate?

The CAS number of ethyl 4-isocyanatobenzoate is 30806-83-8.

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

ethyl 4-isocyanatobenzoate has molecular formula C10H9NO3 and molecular weight 191.18300 g/mol.

Is ethyl 4-isocyanatobenzoate hazardous?

ethyl 4-isocyanatobenzoate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.

What are the upstream and downstream products of ethyl 4-isocyanatobenzoate?

For ethyl 4-isocyanatobenzoate, Upstream Products: Bis(trichloromethyl) carbonate, Benzocaine, Diphosgene.

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

Last updated:

How to cite: Jingsj. "ethyl 4-isocyanatobenzoate (CAS 30806-83-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-20452-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.