1-Chlorocarbonyl-1-methylethyl acetate
Also known as: 2-Acetoxyisobutyryl chloride, 2-Acetoxy-2-methylpropionyl chloride, 1-Chloro-2-methyl-1-oxopropan-2-yl acetate, Alpha-acetoxyisobutyryl chloride, Acetic acid 1-chlorocarbonyl-1-methylethyl ester, Propanoyl chloride, 2-(acetyloxy)-2-methyl-, 2-acetoxyisobutyl chloride
1-Chlorocarbonyl-1-methylethyl acetate (CAS 40635-66-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C6H9ClO3 and a molecular weight of 164.587 g/mol. Key properties include a boiling point of 178.8±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 68.3±0.0 °C. It is classified under GHS with signal word Danger and hazard statements 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.
- 40635-66-3
- Jingsj CID
- J-1510701-4
- Molecular Formula
- C6H9ClO3
- Molecular Weight
- 164.587 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 178.8±23.0 °C at 760 mmHg |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 68.3±0.0 °C |
| Exact Mass | 164.024017 |
| PSA | 43.37000 |
| LogP | 1.25 |
| Vapor Pressure | 1.0±0.3 mmHg at 25°C |
| Refractive Index | 1.435 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2918199090 |
|---|---|
| Summary | 2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Chlorocarbonyl-1-methylethyl acetate?
The CAS number of 1-Chlorocarbonyl-1-methylethyl acetate is 40635-66-3.
What are the molecular formula and molecular weight of 1-Chlorocarbonyl-1-methylethyl acetate?
1-Chlorocarbonyl-1-methylethyl acetate has molecular formula C6H9ClO3 and molecular weight 164.587 g/mol.
Is 1-Chlorocarbonyl-1-methylethyl acetate hazardous?
1-Chlorocarbonyl-1-methylethyl acetate has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 1-Chlorocarbonyl-1-methylethyl acetate?
For 1-Chlorocarbonyl-1-methylethyl acetate, Upstream Products: 2-(Acetyloxy)-2-methylpropanoic acid, 2-Hydroxyisobutyric acid, Acetyl chloride; Downstream Products: 2-Acetoxy-2-methylpropionyl bromide, 1-(2,5-dimethylphenyl)ethanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Chlorocarbonyl-1-methylethyl acetate (CAS 40635-66-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510701-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.