4-Chlorophenyl isothiocyanate
Also known as: Isothiocyanic Acid 4-Chlorophenyl Ester, 1-chloro-4-isothiocyanatobenzene, p-Chlorophenyl isothiocyanate, 4-Chlorophenyl isothiocyate, Benzene, 1-chloro-4-isothiocyanato-, p-Cl-Ph-NCS, MFCD00004810, EINECS 218-358-3
4-Chlorophenyl isothiocyanate (CAS 2131-55-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4ClNS and a molecular weight of 169.631 g/mol. Key properties include a melting point of 42-44 °C(lit.), a boiling point of 250.2±13.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 105.1±19.8 °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.
- 2131-55-7
- Jingsj CID
- J-44592-1
- Molecular Formula
- C7H4ClNS
- Molecular Weight
- 169.631 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 42-44 °C(lit.) |
|---|---|
| Boiling Point | 250.2±13.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 105.1±19.8 °C |
| Exact Mass | 168.975296 |
| PSA | 44.45000 |
| LogP | 3.91 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.594 |
GHS Safety & Compliance
- 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 | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. 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 4-Chlorophenyl isothiocyanate?
The CAS number of 4-Chlorophenyl isothiocyanate is 2131-55-7.
What are the molecular formula and molecular weight of 4-Chlorophenyl isothiocyanate?
4-Chlorophenyl isothiocyanate has molecular formula C7H4ClNS and molecular weight 169.631 g/mol.
Is 4-Chlorophenyl isothiocyanate hazardous?
4-Chlorophenyl isothiocyanate 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 4-Chlorophenyl isothiocyanate?
For 4-Chlorophenyl isothiocyanate, Upstream Products: Thiophosgene, 4-Chloroaniline, Carbon disulphide; Downstream Products: 6-Chloro-2-methylbenzothiazole, Naphthol AS-E, 4-Chlorophenylthiourea.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Chlorophenyl isothiocyanate (CAS 2131-55-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44592-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.