4-Methylpentanoic acid
Also known as: 4-Methylvaleric acid, Isocaproic acid, Isohexanoic acid, Isobutylacetic acid, Isohexoic acid, Valeric acid, 4-methyl-, Pentanoic acid, 4-methyl-
4-Methylpentanoic acid (CAS 646-07-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12O2 and a molecular weight of 116.158 g/mol. Key properties include a melting point of -35 °C, a boiling point of 201.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 97.2±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H311 — Toxic in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 646-07-1
- Jingsj CID
- J-1993676-6
- Molecular Formula
- C6H12O2
- Molecular Weight
- 116.158 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -35 °C |
|---|---|
| Boiling Point | 201.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 97.2±0.0 °C |
| Exact Mass | 116.083733 |
| PSA | 37.30000 |
| LogP | 1.66 |
| Vapor Pressure | 0.1±0.8 mmHg at 25°C |
| Refractive Index | 1.425 |
| Additional Property | INSOLUBLE |
GHS Safety & Compliance
- H311 — Toxic in contact with skin
- H315 — Causes skin irritation
Activity & Biological Data
| Additional Information | [1]. Skonieczna-Żydecka K, et al. Faecal Short Chain Fatty Acids Profile is Changed in Polish Depressive Women. Nutrients. 2018 Dec 7;10(12). |
|---|
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 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 4-Methylpentanoic acid?
The CAS number of 4-Methylpentanoic acid is 646-07-1.
What are the molecular formula and molecular weight of 4-Methylpentanoic acid?
4-Methylpentanoic acid has molecular formula C6H12O2 and molecular weight 116.158 g/mol.
Is 4-Methylpentanoic acid hazardous?
4-Methylpentanoic acid has GHS signal word Danger and hazard statements H311 — Toxic in contact with skin; H315 — Causes skin irritation.
What are the upstream and downstream products of 4-Methylpentanoic acid?
For 4-Methylpentanoic acid, Upstream Products: 4-Methyl-1-pentanol, 1-Bromopentane, β-Propiolactone; Downstream Products: 4-Methylvaleryl chloride, 8-Methylnonanoic acid, Sulfurous acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methylpentanoic acid (CAS 646-07-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993676-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.