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Chloroacetone

Also known as: 1-Chloroacetone, 1-chloro-2-propanone, 1-chloropropan-2-one, 1-chloropropanone, 2-Propanone, 1-chloro-, Acetonyl chloride, Chloracetone, Chloro acetone, Chloropropanone, Monochloracetone, α-Chloroacetone

Chloroacetone (CAS 78-95-5) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C3H5ClO and a molecular weight of 92.524 g/mol. Key properties include a melting point of -44.5 °C, a boiling point of 120.0±8.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 27.8±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H301 — Toxic if swallowed and H310. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
78-95-5
Jingsj CID
J-47516-3
Molecular Formula
C3H5ClO
Molecular Weight
92.524 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Melting Point-44.5 °C
Boiling Point120.0±8.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point27.8±0.0 °C
Exact Mass92.002892
PSA17.07000
LogP0.43
Vapor Pressure15.5±0.2 mmHg at 25°C
Refractive Index1.397
Additional Property124 g/L (20 ºC)

GHS Safety & Compliance

Flammable / Acute Toxicity / Environmental HazardSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H310
  • H330 — Fatal if inhaled
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of Chloroacetone?

The CAS number of Chloroacetone is 78-95-5.

What are the molecular formula and molecular weight of Chloroacetone?

Chloroacetone has molecular formula C3H5ClO and molecular weight 92.524 g/mol.

Is Chloroacetone hazardous?

Chloroacetone has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H301 — Toxic if swallowed; H310.

What are the upstream and downstream products of Chloroacetone?

For Chloroacetone, Upstream Products: 2-nitroprop-1-ene, 1-Chloro-2-propanol, Methyl 2-chloroacetoacetate; Downstream Products: 6-bromo-3-(2-oxopropyl)-1,3-benzothiazol-2(3H)-one, 6-Bromo-2-methylimidazo[1,2-a]pyrimidine, Fluoroacetone.

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

Last updated:

How to cite: Jingsj. "Chloroacetone (CAS 78-95-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47516-3 (accessed 2026-11-06).

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