2-Chloro-1,4-benzoquinone
Also known as: 2,5-Cyclohexadiene-1,4-dione, 2-chloro-, 2-chlorocyclohexa-2,5-diene-1,4-dione, Chloro-1,4-benzoquinone, Chloro-p-benzoquinone, Chloroquinone, Monochloro-p-benzoquinone, Monochloroquinone, p-Benzoquinone, 2-chloro-, MFCD00075260
2-Chloro-1,4-benzoquinone (CAS 695-99-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H3ClO2 and a molecular weight of 142.54000 g/mol. Key properties include a melting point of 52-57 °C, a boiling point of 210.1ºC at 760 mmHg, a density of 1.4g/cm3 and a flash point of 83.2ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 695-99-8
- Jingsj CID
- J-2688-4
- Molecular Formula
- C6H3ClO2
- Molecular Weight
- 142.54000 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 52-57 °C |
|---|---|
| Boiling Point | 210.1ºC at 760 mmHg |
| Density | 1.4g/cm3 |
| Flash Point | 83.2ºC |
| Exact Mass | 141.98200 |
| PSA | 34.14000 |
| LogP | 0.81710 |
| Refractive Index | 1.551 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2914700090 |
|---|---|
| Summary | HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-Chloro-1,4-benzoquinone?
The CAS number of 2-Chloro-1,4-benzoquinone is 695-99-8.
What are the molecular formula and molecular weight of 2-Chloro-1,4-benzoquinone?
2-Chloro-1,4-benzoquinone has molecular formula C6H3ClO2 and molecular weight 142.54000 g/mol.
Is 2-Chloro-1,4-benzoquinone hazardous?
2-Chloro-1,4-benzoquinone has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Chloro-1,4-benzoquinone (CAS 695-99-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2688-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.