2,4-Dichlorophenyl isocyanate

Also known as: 1,3-dichloro-4-isocyanatobenzene, 1,3-dichloro-4-phenylisocyanate, 2,4-dichloro-1-isocyanatobenzene, 2,4-dichloro-1-phenylisocyanate, 2,4-dichlorobenzenisocyanate, Isocyanic Acid 2,4-Dichlorophenyl Ester, 2,4-Dichlorophenyl isocyanate 99%, 2,4-Dichlor-phenylisocyanat, TIMTEC-BB SBB006720, EINECS 220-040-4, MFCD00002001

2,4-Dichlorophenyl isocyanate (CAS 2612-57-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H3Cl2NO and a molecular weight of 188.011 g/mol. Key properties include a melting point of 59-60 °C, a boiling point of 235.3±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 87.6±11.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2612-57-9
Jingsj CID: J-33984-4
Molecular Formula: C₇H₃Cl₂NO
Molecular Weight: 188.011 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	59-60 °C
Boiling Point	235.3±20.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	87.6±11.0 °C
Exact Mass	186.959167
PSA	29.43000
LogP	3.97
Vapor Pressure	0.1±0.5 mmHg at 25°C
Refractive Index	1.575
Additional Property	decomposes

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger

H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H331 — Toxic if inhaled
H315 — Causes skin irritation
H317 — May cause an allergic skin reaction
H319 — Causes serious eye irritation
H334 — May cause allergy or asthma symptoms if inhaled
H335 — May cause respiratory irritation

Customs & Trade Information

HS Code	2929109000
Summary	2929109000. 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 2,4-Dichlorophenyl isocyanate?

The CAS number of 2,4-Dichlorophenyl isocyanate is 2612-57-9.

What are the molecular formula and molecular weight of 2,4-Dichlorophenyl isocyanate?

2,4-Dichlorophenyl isocyanate has molecular formula C7H3Cl2NO and molecular weight 188.011 g/mol.

Is 2,4-Dichlorophenyl isocyanate hazardous?

2,4-Dichlorophenyl isocyanate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.

What are the upstream and downstream products of 2,4-Dichlorophenyl isocyanate?

For 2,4-Dichlorophenyl isocyanate, Upstream Products: 2,4-Dichloroaniline, 2,4-Dichlorobenzamide, Bis(trichloromethyl) carbonate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2,4-Dichlorophenyl isocyanate (CAS 2612-57-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33984-4 (accessed 2026-11-09).

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