**English Name:** Linoleic Acid Standard for GC
**Other Names:** 18-Carbon-9,12-Dienoic Acid; (Z,Z)-9,12-Octadecadienoic Acid; cis,cis-9,12-Octadecadienoic Acid; Linolenic Acid (Note: This is a common misnomer; correct name is Linoleic Acid); Octadecyl-9,12,15-Trienoic Acid
**CAS Number:** 60-33-3
**Molecular Formula:** Câ‚₈H₃₂Oâ‚‚
**Molar Mass:** 280.46 g/mol
**Grade:** Puriss, Suitable for Gas Chromatography (GC) Analysis
**Purity:** ≥99.0% (as determined by Gas Chromatography)
**Refractive Index:** 1.466 – 1.470
**Boiling Point:** 229 – 230 °C at 16 mmHg (lit.)
**Melting Point:** -5 °C
**Density:** 0.902 g/ml at 25°C
**Physical Properties:**
A colorless to pale yellow liquid. It is highly sensitive to oxidation when exposed to air and may degrade upon distillation.
**Solubility:**
- **Miscible** with dimethylformamide, oils, and organic solvents
- **Slightly soluble** in ether, anhydrous ethanol, and petroleum ether
- **Insoluble** in water and glycerin
**Usage:**
Primarily used in biochemical research, especially for analytical purposes such as gas chromatography. It serves as a reference standard for the identification and quantification of linoleic acid in various samples.
**Storage Conditions:**
Store at 2–8 °C, in a cool, dark place, away from direct light and moisture. Ensure the container is tightly sealed to prevent oxidation.
**Safety Note:**
This compound may cause mild irritation upon contact with skin or eyes. Always wear appropriate personal protective equipment (PPE) when handling.
**Application Fields:**
Commonly used in lipid analysis, food science, pharmaceutical development, and quality control testing. Its high purity makes it ideal for accurate and reproducible results in chromatographic methods.
**Notes:**
Due to its sensitivity to oxygen and heat, it is recommended to use this standard within the expiration date and under controlled laboratory conditions.
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