Decanoic acid

C10H20O2

decanoic acid

CAS334-48-5
GHS07 Gefahrensymbol: Gesundheitsschädlich/Reizend – Ausrufezeichen
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Identification

CAS Number
334-48-5
EC Number
206-376-4
UN Number
Index Number
607-709-00-X
PubChem CID
2969

Physical-chemical properties

Molecular Formula
C10H20O2
Molar Mass
172.26 g/mol
IUPAC Name
decanoic acid

Chemical Identifiers

InChI
InChI=1S/C10H20O2/c1-2-3-4-5-6-7-8-9-10(11)12/h2-9H2,1H3,(H,11,12)
InChI Key
GHVNFZFCNZKVNT-UHFFFAOYSA-N

Overview

Decanoic acid (CAS 334-48-5) is a saturated fatty acid with ten carbon atoms, commonly used in industrial applications and chemical synthesis. This medium-chain carboxylic acid, also known as capric acid, represents an important building block in various industrial processes. With its molecular formula C10H20O2 and molecular weight of 172.26 g/mol, decanoic acid exhibits the characteristic properties of straight-chain saturated fatty acids while offering unique processing advantages due to its specific chain length. The compound appears as a white crystalline solid at room temperature with a distinctive fatty odor. From a safety perspective, decanoic acid is classified with moderate hazard warnings under the GHS system. It presents skin and eye irritation potential (Skin Irrit. 2; Eye Irrit. 2) and shows chronic aquatic toxicity (Aquatic Chronic 3), requiring appropriate handling precautions in industrial environments. The substance carries a Warning signal word and displays the GHS07 pictogram, indicating the need for standard personal protective equipment during handling and processing operations. Industrially, decanoic acid serves multiple applications including the production of specialized lubricants, where its medium-chain structure provides optimal viscosity characteristics. It also functions as an intermediate in the synthesis of esters, plasticizers, and surfactants, making it valuable in the chemical manufacturing sector. The food industry utilizes decanoic acid and its derivatives as flavoring agents and antimicrobial compounds. Compared to shorter-chain acids like nonanoic acid, decanoic acid offers enhanced stability and different solubility properties that make it particularly suitable for specific formulation requirements. OYSI provides technical-grade decanoic acid to European industrial customers, supporting applications across chemical synthesis, specialty chemicals, and industrial manufacturing sectors.

Safety & Classification

Warning
Classification:

Skin Irrit. 2; Eye Irrit. 2; Aquatic Chronic 3

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H315

Causes skin irritation.

H319

Causes serious eye irritation.

H412

Harmful to aquatic life with long lasting effects.

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

Irritant

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

Irritant

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.

Frequently Asked Questions

What is decanoic acid?

Decanoic acid is a saturated fatty acid with ten carbon atoms and the molecular formula C10H20O2. Also known as capric acid, it occurs naturally in coconut oil, palm kernel oil, and goat milk. This medium-chain fatty acid has a molecular weight of 172.26 g/mol and appears as a white crystalline solid at room temperature with a characteristic rancid odor.

What are the physicochemical properties of decanoic acid?

Decanoic acid is a white crystalline solid at room temperature with a melting point of approximately 31.6°C and a boiling point of 270°C. It has a characteristic rancid, fatty odor and is poorly soluble in water but readily soluble in alcohols and organic solvents. The compound has a density of about 0.89 g/cm³ and exhibits typical carboxylic acid properties including acidic behavior.

What is decanoic acid used for?

Decanoic acid is primarily used in the production of esters for flavoring agents, fragrances, and cosmetic formulations. It serves as an intermediate in the synthesis of plasticizers, lubricants, and surfactants. The compound is also utilized in the pharmaceutical industry for drug delivery systems and as a component in antimicrobial formulations due to its natural preservative properties.

How to handle decanoic acid safely?

Decanoic acid should be handled with appropriate personal protective equipment including safety glasses, gloves, and protective clothing due to its skin and eye irritation potential (Skin Irrit. 2; Eye Irrit. 2). Work in well-ventilated areas to avoid inhalation of vapors. Avoid direct contact with skin and eyes, and ensure emergency eyewash stations are accessible. Follow GHS07 pictogram warnings and maintain good hygiene practices.

How to store decanoic acid correctly?

Decanoic acid should be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly closed to prevent moisture absorption and contamination. Store away from strong bases and oxidizing agents to prevent unwanted reactions. Maintain storage temperatures below 25°C to prevent melting and ensure the material remains in solid form for easier handling.

What to do in case of contact with decanoic acid?

In case of skin contact with decanoic acid, immediately remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move to fresh air immediately. In case of ingestion, rinse mouth and seek immediate medical advice without inducing vomiting.

How to dispose of decanoic acid properly?

Decanoic acid waste must be disposed of according to local and national environmental regulations as it is classified as Aquatic Chronic 3. Do not discharge into drains, waterways, or soil. Collect waste in appropriate containers and arrange disposal through licensed waste management companies. Small quantities may be neutralized with suitable alkali before disposal, following proper waste treatment protocols and regulatory requirements.

How to transport decanoic acid?

Decanoic acid is not classified as a dangerous good under ADR regulations for road transport, making it relatively straightforward to ship. However, proper packaging is essential to prevent spillage and container damage during transport. Use appropriate secondary containment and ensure packages are properly labeled with substance identification and hazard information according to CLP regulation requirements.

Is decanoic acid subject to specific regulations?

Decanoic acid is subject to CLP regulation requirements due to its classification as Skin Irrit. 2, Eye Irrit. 2, and Aquatic Chronic 3, requiring appropriate labeling with GHS07 pictogram and 'Warning' signal word. It falls under REACH regulation for chemical registration and evaluation. The substance is not listed as an SVHC (Substance of Very High Concern) and has no specific use restrictions under current European legislation.

Where to buy decanoic acid in Europe?

Decanoic acid is available through OYSI, a European distributor specializing in technical chemical products. OYSI provides reliable supply across European markets with proper documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures compliance with European regulations and maintains quality standards for industrial and professional applications throughout the supply chain.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.