Linseed oil

Linseed Oil (CAS 8001-26-1) is a natural plant-derived drying oil obtained from the seeds of the flax plant (Linum usitatissimum). With high polyunsaturated fatty-acid content, it polymerises on exposure to air and finds major use in coatings, paints, varnishes, wood-protection, linoleum, printing inks and industrial raw materials.

Product Specifications

Appearance

Liquid – golden yellow to amber-yellow oily liquid

Application

wood-treatments, linoleum, printing inks. Also used in non-edible industrial applications; some refined grades may be food/edible (but note oxidation/rancidity issues).

Cas no

8001-26-1

Molecular formula

Not a single formula (mixture of triglycerides). Typical fatty acid composition includes α-linolenic acid (~50 %), oleic acid (~18–22 %), linoleic acid (~14–17 %), palmitic (~7 %), stearic (~3–5 %).

Odour

Mild, bland oil odour (in refined form). For raw or oxidised grades the odour may become rancid or stronger

Primary use

Plasticizer and fragrance fixative

Reactivity

Stable under recommended storage conditions; avoid strong reducing and oxidizing agents

Shelf life

12 months (in closed original containers)

Solubility

Insoluble (or very poorly soluble) in water. Soluble in organic solvents (e.g., hydrocarbons, alcohols) and miscible with many oils.

Storage conditions

Store in a cool, dry, and well-ventilated area away from direct sunlight; keep container tightly closed