Methyl 2-chloroacetoacetate
Also known as: Methyl 2-chloro-3-oxobutanoate, 2-Chloroacetoacetic Acid Methyl Ester, 2-Acetyl-2-chloroacetic acid methyl ester, 2-chloro-3-oxo-butyric acid methyl ester, Butanoic acid, 2-chloro-3-oxo-, methyl ester, Chloroacetoacetic acid methyl ester, MFCD00008757
Methyl 2-chloroacetoacetate (CAS 4755-81-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H7ClO3 and a molecular weight of 150.56000 g/mol. Key properties include a melting point of −33-−32.7 °C(lit.), a boiling point of 137 °C(lit.), a density of 1.236 g/mL at 25 °C(lit.) and a flash point of 71.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.
- CAS No.
- 4755-81-1
- Jingsj CID
- J-43100-5
- Molecular Formula
- C5H7ClO3
- Molecular Weight
- 150.56000 g/mol
- Category
- Organic Acids
- Last updated
- 11/2/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −33-−32.7 °C(lit.) |
|---|---|
| Boiling Point | 137 °C(lit.) |
| Density | 1.236 g/mL at 25 °C(lit.) |
| Flash Point | 71.7 °C |
| Exact Mass | 150.00800 |
| PSA | 43.37000 |
| LogP | 0.35580 |
| Refractive Index | n20/D 1.446(lit.) |
| Additional Property | 50 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 Methyl 2-chloroacetoacetate?
The CAS number of Methyl 2-chloroacetoacetate is 4755-81-1.
What are the molecular formula and molecular weight of Methyl 2-chloroacetoacetate?
Methyl 2-chloroacetoacetate has molecular formula C5H7ClO3 and molecular weight 150.56000 g/mol.
Is Methyl 2-chloroacetoacetate hazardous?
Methyl 2-chloroacetoacetate has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of Methyl 2-chloroacetoacetate?
For Methyl 2-chloroacetoacetate, Upstream Products: Methyl acetoacetate, Ethyl acetoacetate; Downstream Products: Methyl 2-amino-4-methylthiazole-5-carboxylate, Methyl 2-(4-chlorophenyl)-4-methyl-1,3-thiazole-5-carboxylate, methyl 3-methylbenzo[b]thiophene-2-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl 2-chloroacetoacetate (CAS 4755-81-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43100-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.