Arachidic acid

CAS Number
506-30-9
EC Number
208-031-3

What is Arachidic acid?

Arachidic acid (CAS 506-30-9), also known as eicosanoic acid, is a saturated C20 fatty acid derived primarily from peanut oil, fish oil, and other natural fats.

Where is Arachidic acid used?

  • Food: stabilizer and antioxidant component in fat-based systems
  • Personal care: texture and consistency adjuster in creams, lotions, and lip products, contributing to a smooth, stable emulsion structure
  • Lubricants and metalworking: boundary lubricant and surface modifier that improves film adhesion on metal substrates
  • Surfactant production: fatty acid feedstock for soaps, esters, and amide-based emulsifiers
  • It functions as a stabilizer, emulsifier, and surface-active agent in industrial formulations.

Good to know: Oxidative stability and shelf life are procurement priorities in fat-based systems.

Commercial specifications

  • Technical grade for industrial applications; higher-purity grades for cosmetic and food-contact formulations
  • GC purity typically 90% to 99%+ depending on end-use requirements

Other Names (Synonyms)

n-eicosanoic acid|eicosoic acid|CH3-[CH2]18-COOH|C20:0|arachidinic acid|Arachic acid|Icosanoic acid|EICOSANOIC ACID

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What are the physical properties of Arachidic acid?

Melting Point 75.4 °C
Boiling Point 328.0 °C
Density 0.8613 g/cm³ (liquid) @ Temp: 15 °C
Flash Point 110 °C
Appearance white glistening powder or flakes
Color White
Form Glistening Powder or Flakes
Water Solubility practically insoluble
Vapor Pressure 0Pa at 25℃
Refractive Index nD100 1.4250
Log P 1.571 at 33℃

How is Arachidic acid classified and handled safely? Learn More

Warning
GHS07· Irritant

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.

Which trade and regulatory codes apply to Arachidic acid?

HS Code 29159000
Storage Class 11 - Combustible Solids
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