Ethyl oxalyl monochloride
Also known as: Ethyl chlorooxoacetate, Ethyl chloroglyoxylate, Ethyl oxalyl chloride, Monoethyl oxalyl chloride, Ethyl chloroglyoxalate, Ethyl chloro(oxo)acetate, Ethoxy oxalylchloride, ETCOX, Chloroglyoxylic Acid Ethyl Ester, Oxalic Acid Monoethyl Ester Chloride, ethyl 2-chloro-2-oxoacetate, Acetic acid, 2-chloro-2-oxo-, ethyl ester, Acetic acid, chlorooxo-, ethyl ester, Glyoxylic acid, chloro-, ethyl ester, Ethoxalyl chloride
Ethyl oxalyl monochloride (CAS 4755-77-5) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C4H5ClO3 and a molecular weight of 136.534 g/mol. Key properties include a melting point of 135ºC, a boiling point of 137.0±9.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 41.7±0.0 °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 Aug 21, 2026.
- CAS No.
- 4755-77-5
- Jingsj CID
- J-48482-6
- Molecular Formula
- C4H5ClO3
- Molecular Weight
- 136.534 g/mol
- Category
- Esters
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 135ºC |
|---|---|
| Boiling Point | 137.0±9.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 41.7±0.0 °C |
| Exact Mass | 135.992722 |
| PSA | 43.37000 |
| LogP | 1.06 |
| Vapor Pressure | 7.2±0.3 mmHg at 25°C |
| Refractive Index | 1.425 |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2918300090 |
|---|---|
| Summary | 2918300090 other carboxylic acids with aldehyde or ketone 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 Ethyl oxalyl monochloride?
The CAS number of Ethyl oxalyl monochloride is 4755-77-5.
What are the molecular formula and molecular weight of Ethyl oxalyl monochloride?
Ethyl oxalyl monochloride has molecular formula C4H5ClO3 and molecular weight 136.534 g/mol.
Is Ethyl oxalyl monochloride hazardous?
Ethyl oxalyl monochloride 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 Ethyl oxalyl monochloride?
For Ethyl oxalyl monochloride, Upstream Products: Diethyl oxalate, Oxalyl chloride, Ethanol; Downstream Products: ethyl 2-(4-methoxyphenyl)-2-oxoacetate, Ethyl 3-methyl-1,2,4-oxadiazole-5-carboxylate, ethyl 2-(4-isopropylphenyl)-2-oxoacetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Ethyl oxalyl monochloride (CAS 4755-77-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48482-6 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.