**Linoleic Acid Standard for GC**
Also known as 18-carbon-9,12-dienoic acid, (Z,Z)-9,12-octadecadienoic acid, cis, cis-9,12-octadecadienoic acid, or cardamenoic acid, this compound is a key unsaturated fatty acid commonly used in analytical chemistry.
**CAS Number:** 60-33-3
**Molecular Formula:** Câ‚₈H₃₂Oâ‚‚
**Molecular Weight:** 280.46 g/mol
**Purity:** ≥99.0% (GC)
**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:** This substance appears as a colorless to pale yellow liquid. It is highly susceptible to oxidation when exposed to air and tends to decompose during distillation. It is miscible with dimethylformamide, oils, and ether, and soluble in anhydrous ethanol and petroleum ether. However, it is not soluble in glycerin or water.
**Application:** Used primarily in biochemical research and as a standard for gas chromatography (GC).
**Storage:** Keep refrigerated at 2–8 °C, away from direct light.
This high-purity linoleic acid standard is ideal for quality control, method development, and analytical testing in laboratories. Always handle with care and follow proper safety protocols.
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