Hexanoic acid
Description
Hexanoic acid (CAS 142-62-1), also known as caproic acid, is a short-chain fatty acid used across food, pharmaceutical, and personal care manufacturing. Recognized under FEMA 2559, it functions as a flavoring agent and pH regulator.
This versatile chemical serves as a preservative and a precursor to ester synthesis. In food and beverage production, it contributes characteristic cheesy, goat-like flavor notes and acts as an acidulant in flavor formulations.
Pharmaceutical and nutraceutical manufacturers use it as a starting material for synthesizing medium-chain triglycerides and capric/caprylic acid esters. It is essential for high-purity chemical synthesis and processing.
In personal care formulations, it supports emulsification and acts as a pH modifier in creams, cleansers, and conditioning products. It also serves as a catalyst precursor and ligand in organometallic chemistry.
These properties make it relevant to specialty chemical and polymer processing applications. Hexanoic acid is supplied as a colorless to pale yellow liquid in drum, IBC, and bulk quantities for industrial use.
Food-grade material meeting FEMA and FCC specifications is available for flavoring applications. Technical-grade material covers industrial and synthesis uses across various manufacturing sectors.
Pharmaceutical-grade supply conforming to USP or Ph.Eur. standards is also commercially available for regulated manufacturing. This ensures compliance with international quality and safety protocols.
Physical Properties
| Melting Point | -3.4 °C |
| Boiling Point | 205.8 °C |
| Density | 0.929 g/cm³ @ Temp: 20 °C |
| Flash Point | 220 °F |
| Appearance | colourless liquid |
| Color | Clear colorless to light yellow |
| Odor | at 10.00 % in propylene glycol. sour fatty sweat cheese |
| Form | Liquid |
| Water Solubility | 1.1 g/100 mL (20 ºC) |
| Vapor Pressure | 0.18 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.4161(lit.) |
| pH | 4 (1g/l, H2O, 20℃) |
| Log P | 1.92 at 25℃ |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29159000 |
| UN Number | 2829 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| WGK (Germany) | 1 |
Documentation
Other Names
pentylformic acid|pentiformic acid|Pentanecarboxylic acid|n-hexylic acid|N-Hexylate|n-hexoic acid|N-Hexoate|n-hexanoic acid
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