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**Systematic name:**
(9Z)-Octadec-9-enoic acid
**Molecular formula:**
C₁₈H₃₄O₂
**Chemical formula (condensed):**
CH₃(CH₂)₇CH=CH(CH₂)₇COOH
**Molar mass:** 282,26 g/mol
**Information:** Oleic acid is normally a pale yellow to brown liquid. It is the most widespread bigger fatty acid.
**Use:** It is used for printing inks and drying varnishes.
**Appearance:** It occurs in the form of an ester with glycerol primarily in liquid vegetable oils (olive, linseed, rapeseed).