Octanoic acid
C8H16O2
octanoic acid
Consulting for Octanoic acid
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Identification
- CAS Number
- 124-07-2
- EC Number
- 204-677-5
- UN Number
- 3265
- Index Number
- 607-708-00-4
- PubChem CID
- 379
Physical-chemical properties
- Molecular Formula
- C8H16O2
- Molar Mass
- 144.21 g/mol
- IUPAC Name
- octanoic acid
Chemical Identifiers
- InChI
- InChI=1S/C8H16O2/c1-2-3-4-5-6-7-8(9)10/h2-7H2,1H3,(H,9,10)
- InChI Key
- WWZKQHOCKIZLMA-UHFFFAOYSA-N
Overview
Octanoic acid (CAS 124-07-2) is a saturated fatty acid with eight carbon atoms, naturally occurring in various plant and animal sources. This medium-chain carboxylic acid, also known as caprylic acid, represents an important industrial chemical intermediate with diverse applications across multiple sectors. With the molecular formula C8H16O2 and a molecular weight of 144.21 g/mol, octanoic acid appears as a colorless to pale yellow liquid with a characteristic rancid odor at room temperature. The compound exhibits typical properties of medium-chain fatty acids, including moderate solubility in water and good stability under normal storage conditions. From a safety perspective, octanoic acid requires careful handling due to its corrosive nature, classified as Skin Corr. 1C under GHS regulations. The substance carries the danger signal word and GHS05 pictogram, indicating its potential to cause severe skin burns and eye damage upon contact. Additionally, its Aquatic Chronic 3 classification reflects environmental considerations for long-term aquatic toxicity. Transportation falls under ADR Class 8, designating it as a corrosive substance requiring appropriate packaging and labeling protocols. Industrial applications of octanoic acid span several key sectors. In the chemical industry, it serves as a precursor for manufacturing esters, metallic soaps, and surfactants. The pharmaceutical and cosmetic industries utilize octanoic acid in formulating antimicrobial agents and preservatives. Unlike more specialized chemicals such as trichlorostibane or pentachloro-lambda5-phosphane, octanoic acid benefits from its biological origin and relatively straightforward handling requirements, making it accessible for diverse manufacturing processes. OYSI maintains reliable supply chains for octanoic acid, ensuring consistent availability for European industrial customers requiring this versatile carboxylic acid intermediate.
Safety & Classification
Skin Corr. 1C; Aquatic Chronic 3
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Skin Contact
Measures if substance contacts the skin
First Aid Actions
- +P302IF ON SKIN:
- +P352Wash with plenty of water.
- +P361Take off immediately all contaminated clothing.
- +P313Get medical advice/attention.
Related hazard statements:
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 3265 |
| ADR Class | 8 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | Caprylsäure |
| Marine Pollutant | No |
Frequently Asked Questions
What is octanoic acid?
Octanoic acid is a saturated fatty acid with eight carbon atoms and the molecular formula C8H16O2. Also known as caprylic acid, it occurs naturally in coconut oil, palm oil, and mammalian milk. This carboxylic acid has a molecular weight of 144.21 g/mol and appears as a colorless to pale yellow liquid with a characteristic rancid odor. It is classified as a skin corrosive substance requiring careful handling in industrial applications.
What are the physicochemical properties of octanoic acid?
Octanoic acid is a colorless to pale yellow liquid at room temperature with a distinctive rancid, fatty odor. It has a boiling point of approximately 239°C and melting point around 16°C. The substance is slightly soluble in water but readily soluble in organic solvents like ethanol and ether. It exhibits typical carboxylic acid properties, being acidic in nature with corrosive characteristics that require appropriate safety measures during handling.
What is octanoic acid used for?
Octanoic acid serves multiple industrial applications including the production of esters for flavoring agents, fragrances, and cosmetic formulations. It is used as an intermediate in chemical synthesis, particularly in manufacturing plasticizers, lubricants, and surfactants. The pharmaceutical industry utilizes it in drug formulations and as an antimicrobial agent. Additionally, it finds applications in metalworking fluids, rubber processing, and as a component in specialty chemicals for various industrial processes.
How to handle octanoic acid safely?
Octanoic acid requires careful handling due to its skin corrosive properties (Skin Corr. 1C classification). Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation in work areas and avoid direct skin and eye contact. Use in well-ventilated areas or under fume hoods. Have emergency eyewash stations and safety showers readily available. Handle containers carefully to prevent spills and always follow established safety protocols.
How to store octanoic acid correctly?
Octanoic acid should be stored in tightly sealed, corrosion-resistant containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Keep containers away from strong bases, oxidizing agents, and metals that may react with acids. Store below 25°C to maintain stability and prevent degradation. Ensure storage areas have appropriate spill containment measures and are accessible to emergency response equipment while being secured from unauthorized access.
What to do in case of contact with octanoic acid?
Octanoic acid contact requires immediate action due to its corrosive nature. For skin contact, immediately remove contaminated clothing and flush affected area with copious amounts of water for at least 15 minutes. For eye contact, rinse immediately with water for at least 15 minutes and seek medical attention. If inhaled, move to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always consult a physician after any significant exposure.
How to dispose of octanoic acid properly?
Octanoic acid disposal must comply with local, national, and EU waste regulations. The substance should be treated as hazardous chemical waste and disposed of through licensed waste management companies. Never discharge into sewers, waterways, or soil due to its aquatic chronic toxicity classification. Small quantities may be neutralized carefully with appropriate bases under controlled conditions before disposal, but this should only be done by trained personnel following established protocols and regulatory requirements.
How to transport octanoic acid?
Octanoic acid is classified under ADR transport regulations as Class 8 (corrosive substances), Packing Group III. Transportation requires appropriate UN-specification packaging designed for corrosive liquids. Vehicles must carry proper documentation, emergency response information, and appropriate safety equipment. Drivers need ADR certification for dangerous goods transport. Packages must display correct hazard labels and markings. Ensure compliance with routing restrictions and notification requirements for dangerous goods transportation across European borders.
Is octanoic acid subject to specific regulations?
Octanoic acid is subject to various European regulations including REACH registration requirements and CLP classification obligations. It is not currently listed as a Substance of Very High Concern (SVHC). Suppliers must provide Safety Data Sheets complying with REACH Annex II requirements. The substance must be classified and labeled according to CLP regulation showing GHS05 pictogram and 'Danger' signal word. Industrial users may need to consider exposure scenarios and risk management measures under REACH downstream user obligations.
Where to buy octanoic acid in Europe?
Octanoic acid is available through OYSI, a trusted European distributor of industrial chemicals. OYSI provides high-quality octanoic acid with proper documentation, safety data sheets, and regulatory compliance for various industries across Europe. As a specialized chemical distributor, OYSI ensures reliable supply, appropriate packaging, and technical support for customers requiring octanoic acid for industrial applications. Contact OYSI directly for availability, specifications, and delivery options to your European location.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.