3-Methylbutanoyl chloride
Also known as: Isovaleryl chloride, Isopentanoyl chloride, Isovaleroyl chloride, Isovaleric acid chloride, 3-Methylbutyryl chloride, 3-methyl-butanoylchlorid, Butanoyl chloride, 3-methyl-, AKOS BBS-00003911, MFCD00000738, EINECS 203-552-2
3-Methylbutanoyl chloride (CAS 108-12-3) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H9ClO and a molecular weight of 120.577 g/mol. Key properties include a boiling point of 116.4±8.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 18.9±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H314 — Causes severe skin burns and eye damage and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 108-12-3
- Jingsj CID
- J-1332335-0
- Molecular Formula
- C5H9ClO
- Molecular Weight
- 120.577 g/mol
- Category
- Organohalogen Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 116.4±8.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 18.9±0.0 °C |
| Exact Mass | 120.034195 |
| PSA | 17.07000 |
| LogP | 1.87 |
| Vapor Pressure | 18.2±0.2 mmHg at 25°C |
| Refractive Index | 1.415 |
| Additional Property | decomposes |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
- H314 — Causes severe skin burns and eye damage
- H331 — Toxic if inhaled
Customs & Trade Information
| HS Code | 29159080 |
|---|
Frequently Asked Questions
What is the CAS number of 3-Methylbutanoyl chloride?
The CAS number of 3-Methylbutanoyl chloride is 108-12-3.
What are the molecular formula and molecular weight of 3-Methylbutanoyl chloride?
3-Methylbutanoyl chloride has molecular formula C5H9ClO and molecular weight 120.577 g/mol.
Is 3-Methylbutanoyl chloride hazardous?
3-Methylbutanoyl chloride has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H314 — Causes severe skin burns and eye damage; H331 — Toxic if inhaled.
What are the upstream and downstream products of 3-Methylbutanoyl chloride?
For 3-Methylbutanoyl chloride, Upstream Products: Isovaleric acid, Thionyl chloride, Benzoyl chloride; Downstream Products: Benzene, 4-[(2R)-2-(chloromethyl)-3-methylbutyl]-1-methoxy-2-(3-methoxypropoxy)-, 5(S)-[1(S)-Azido-3(S)-[4-methoxy-3-(3-methoxypropoxy)benzyl]-4-methylpentyl]-3(S)-isopropyldihydrofuran-2-one, Ethyl 5-methyl-3-oxohexanoate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methylbutanoyl chloride (CAS 108-12-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1332335-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.