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2-Ethylbutanoyl chloride

Also known as: 2-Ethylbutyryl chloride, 2-Ethylbutyroyl chloride, Diethylacetyl chloride, Diethylacetic acid chloride, NSC 8757, Butanoyl chloride, 2-ethyl-, Butyryl chloride, 2-ethyl-, 2-ethylbutanoyl chloride

2-Ethylbutanoyl chloride (CAS 2736-40-5) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C6H11ClO and a molecular weight of 134.60400 g/mol. Key properties include a boiling point of 137-139 °C(lit.), a density of 0.982 g/mL at 25 °C(lit.) and a flash point of 35.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
2736-40-5
Jingsj CID
J-47920-9
Molecular Formula
C6H11ClO
Molecular Weight
134.60400 g/mol
Category
Organohalogen Compounds
Last updated
11/2/2026

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Physicochemical Properties

Boiling Point137-139 °C(lit.)
Density0.982 g/mL at 25 °C(lit.)
Flash Point35.0 °C
Exact Mass134.05000
PSA17.07000
LogP2.18800
Vapor Pressure6.15mmHg at 25°C
Refractive Indexn20/D 1.425(lit.)

GHS Safety & Compliance

Flammable / CorrosionSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code2915900090
Summary2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Ethylbutanoyl chloride?

The CAS number of 2-Ethylbutanoyl chloride is 2736-40-5.

What are the molecular formula and molecular weight of 2-Ethylbutanoyl chloride?

2-Ethylbutanoyl chloride has molecular formula C6H11ClO and molecular weight 134.60400 g/mol.

Is 2-Ethylbutanoyl chloride hazardous?

2-Ethylbutanoyl chloride has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of 2-Ethylbutanoyl chloride?

For 2-Ethylbutanoyl chloride, Upstream Products: 2-Ethylbutanoic acid, Thionyl chloride, diethylmalonic acid; Downstream Products: 2,2-diethylpropanedioyl dichloride, 3-Ethyl-4-octanone, 2-Bromo-2-ethylbutyryl bromide.

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-Ethylbutanoyl chloride (CAS 2736-40-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47920-9 (accessed 2026-11-09).

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