4-Methyloctanoic acid
4-甲基辛酸
Also known as: 4-Methylcaprylic acid, Hircinoic acid, FEMA 3575, 4-Methyl-n-octanoic acid
4-Methyloctanoic acid (CAS 54947-74-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H18O2 and a molecular weight of 158.238 g/mol. It is also known as 4-Methylcaprylic acid, Hircinoic acid and FEMA 3575. Key properties include a boiling point of 253.4±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 129.7±6.9 °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.
- 54947-74-9
- Jingsj CID
- J-25437-1
- Molecular Formula
- C9H18O2
- Chinese Name
- 4-甲基辛酸
- Molecular Weight
- 158.238 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 253.4±8.0 °C at 760 mmHg |
|---|---|
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 129.7±6.9 °C |
| Exact Mass | 158.130676 |
| PSA | 37.30000 |
| LogP | 3.25 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.439 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Activity & Biological Data
| Additional Information | [1]. Teng F, et al. Effects of season and industrial processes on volatile 4-alkyl-branched chain fatty acids in sheep milk. Food Chem. 2018 Sep 15;260:327-335. |
|---|
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-Methyloctanoic acid?
The CAS number of 4-Methyloctanoic acid is 54947-74-9.
What are the molecular formula and molecular weight of 4-Methyloctanoic acid?
4-Methyloctanoic acid has molecular formula C9H18O2 and molecular weight 158.238 g/mol.
Is 4-Methyloctanoic acid hazardous?
4-Methyloctanoic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 4-Methyloctanoic acid?
For 4-Methyloctanoic acid, Upstream Products: Ethyl 4-methyloctanoate, Hexanal, 2-Methyl-1-hexanol; Downstream Products: Ethyl 4-methyloctanoate.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methyloctanoic acid (CAS 54947-74-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25437-1 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.