A linseed oil finish is easily scratched and liquid water penetrates a linseed oil finish in mere minutes, and water vapour bypasses it almost completely. When used as a wood finish, linseed oil dries slowly and shrinks little upon hardening. The durability of putty is owed to the drying properties of linseed oil. Feed me oil 4 9 windows#Traditional glazing putty, consisting of a paste of chalk powder and linseed oil, is a sealant for glass windows that hardens within a few weeks of application and can then be painted over. The introduction of linseed oil was a significant advance in the technology of oil painting. It is available in varieties such as cold-pressed, alkali-refined, sun-bleached, sun-thickened, and polymerised (stand oil). It can also be used as a painting medium, making oil paints more fluid, transparent and glossy. Linseed oil is the carrier used in oil paint. The water-repelling (hydrophobic) nature of the resulting hydrocarbon-based material is advantageous. Most applications of linseed oil exploit its drying properties, i.e., the initial material is liquid or at least pliable and the aged material is rigid but not brittle. In 1991, One Meridian Plaza, a high rise in Philadelphia, was severely damaged in a fire, in which three firefighters perished, thought to be caused by rags soaked with linseed oil. The oxidation of linseed oil is exothermic, which may lead to spontaneous combustion. Rags soaked with linseed oil stored pose fire hazard because they provide a large surface area for rapid oxidation. To prevent premature drying, linseed oil-based products (oil paints, putty) are stored in airtight containers. This polymerization, which is called " drying", results in the rigidification of the material. Having a high content of di- and tri-unsaturated esters, linseed oil is particularly susceptible to polymerization reactions upon exposure to oxygen in air. It is regarded as a delicacy due to its hearty taste and ability to improve the bland flavour of quark. In parts of Europe, it is traditionally eaten with potatoes and quark. Linseed oil is an edible oil in demand as a dietary supplement, as a source of α-Linolenic acid, an omega-3 fatty acid. Linseed oil use has declined over the past several decades with increased availability of synthetic alkyd resins-which function similarly but resist yellowing. Owing to its polymer-forming properties, linseed oil is often blended with combinations of other oils, resins or solvents as an impregnator, drying oil finish or varnish in wood finishing, as a pigment binder in oil paints, as a plasticizer and hardener in putty, and in the manufacture of linoleum. The oil is obtained by pressing, sometimes followed by solvent extraction. Linseed oil, also known as flaxseed oil or flax oil (in its edible form), is a colourless to yellowish oil obtained from the dried, ripened seeds of the flax plant ( Linum usitatissimum). Flax, flax seeds, linseed oil, linseed cake
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