1,1,3-Trichloroacetone

Also known as: 1,1,3-TCA, 1,1,3-TRICHLORO-2-PROPANONE, 1,1,3-TRICHLOROACETONE, 1,1,3-TRICHLOROPROPANONE, 1,1,3-TrichL, 1,1,3-trichloro-2-propanon, 1,1,3-trichloropropan-2-one, 2-Propanone, 1,1,3-trichloro-, alpha,alpha',alpha'-Trichloroacetone, 1,1,3-Trichloroacetone, Wacker quality

1,1,3-Trichloroacetone (CAS 921-03-9) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C3H3Cl3O and a molecular weight of 161.414 g/mol. Key properties include a melting point of 9-11 °C(lit.), a boiling point of 170.7±25.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 79.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 921-03-9
Jingsj CID: J-1510703-7
Molecular Formula: C₃H₃Cl₃O
Molecular Weight: 161.414 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	9-11 °C(lit.)
Boiling Point	170.7±25.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	79.4±0.0 °C
Exact Mass	159.924942
PSA	17.07000
LogP	2.51
Vapor Pressure	1.4±0.3 mmHg at 25°C
Refractive Index	1.468

GHS Safety & Compliance

Corrosion / Acute Toxicity / Environmental HazardSignal word: Danger

H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H314 — Causes severe skin burns and eye damage
H330 — Fatal if inhaled
H410 — Very toxic to aquatic life with long lasting effects

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 1,1,3-Trichloroacetone?

The CAS number of 1,1,3-Trichloroacetone is 921-03-9.

What are the molecular formula and molecular weight of 1,1,3-Trichloroacetone?

1,1,3-Trichloroacetone has molecular formula C3H3Cl3O and molecular weight 161.414 g/mol.

Is 1,1,3-Trichloroacetone hazardous?

1,1,3-Trichloroacetone has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of 1,1,3-Trichloroacetone?

For 1,1,3-Trichloroacetone, Upstream Products: Chloroacetone, Chloroiodomethane, Ethyl dichloroacetate; Downstream Products: 2-(Dichloromethyl)imidazo[1,2-a]pyridine, Imidazo[1,2-a]pyridine-2-carbaldehyde, 5-Fluoroimidazo[1,2-a]pyridine-2-carbaldehyde.

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. "1,1,3-Trichloroacetone (CAS 921-03-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510703-7 (accessed 2026-11-07).

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