Linseed fatty acid
Description
Linseed fatty acid (CAS 68424-45-3), also supplied under the designation L 310, is derived from linseed oil and consists predominantly of unsaturated C18 fatty acids. These include linolenic, linoleic, and oleic acid fractions.
It functions as a reactive raw material and surface-active agent across coatings, adhesives, and industrial processing applications. In alkyd resin and varnish production, it contributes to oxidative drying performance.
This makes it a preferred fatty acid component in air-drying coatings and printing ink binders. Adhesive and sealant formulators incorporate it as a reactive modifier to improve flexibility and substrate adhesion.
In metalworking and lubricant formulations, it acts as a boundary lubricant and corrosion-inhibiting additive in cutting fluids and rolling oils. Textile and leather processors use it for fiber lubrication.
It is also utilized for surface conditioning, while paper manufacturers apply it in sizing and surface treatment processes. Linseed fatty acid is supplied as an amber to yellow liquid for industrial use.
Technical grade is the standard commercial form, with product specifications typically defined by acid value, iodine value, and color on the Gardner scale. Supply is available in drums and bulk quantities.
These packaging options are designed to suit industrial procurement volumes and long-term storage requirements. The material remains a versatile staple for manufacturers requiring high-quality unsaturated fatty acids.
Physical Properties
| Melting Point | -11 °C(lit.) |
| Boiling Point | 230-232 °C1 mm Hg(lit.) |
| Density | 0.914 g/mL at 25 °C(lit.) |
| Flash Point | >230 °F |
| Refractive Index | n 20/D 1.480(lit.) |
Trade & Regulatory
| WGK (Germany) | 1 |
Documentation
Other Names
Fatty acids, linseed-oil|Linseed-oil fatty acids|L 310|L 75 (acid)|L 75
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