Linseed Oil


Linseed Oil - Directory & Reference Resources

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Flax oil (in bottles) and coconut oil (in jars in the middle)Linseed oil is a yellowish drying oil derived from the dried ripe seeds of the flax plant (Linum usitatissimum, Linaceae). It is obtained by pressing, followed by an optional stage of solvent extraction. Cold-pressed oil obtained without solvent extraction is marketed as flaxseed oil.

TYPICAL FATTY ACID CONTENT[1] %

Palmitic 6.0

Stearic Acid 2.5

Arachidic acid 0.5

Oleic acid 19.0

Linoleic acid 24.1

Linolenic 47.4

Other 0.5

Contents

1 Uses

1.1 Nutritional supplement

1.2 Paint binder

1.3 Wood finish

1.4 Additional uses

2 Boiled linseed oil

3 Spontaneous combustion

4 Nutrient content

5 References

 Uses

 Nutritional supplement

Linseed oil is suitable for human consumption, if it is very fresh, refrigerated and unprocessed, and is used as a nutritional supplement. It is rich in omega-3 fatty acids, especially alpha-linolenic acid, which appears to be beneficial for preventing heart disease, inflammatory bowel disease, arthritis and a variety of other health conditions. Flaxseed also contains a group of chemicals called lignans that may play a role in the prevention of cancer.[1]

 Paint binder

Linseed oil is the most commonly used carrier in oil paint. It can also be used as a painting medium, making oil paints more fluid, transparent and glossy. It is available in varieties such as Cold Pressed, alkali refined, sun Bleached, sun thickened, and polymerised (stand oil).

 Wood finish

When used as a wood finish, linseed oil does not cover the surface as varnish does, but soaks into the (visible and microscopic) pores, leaving a shiny but not glossy surface that shows off the grain. Wood treated with linseed oil not only is resistant to denting, and scratches are easily repaired, but the wood and oil surface is not as hard as a modern varnish, and it slowly absorbs moisture if allowed to stay wet. Soft wood benefits from the protection from denting but requires more applications and even more drying time than harder wood does, if the grain is to be completely filled. The oil penetrates deeply and fills the grain, because it dries slowly and shrinks little or not at all on hardening. It is a traditional finish for gun stocks, however a very fine finish may require months to obtain. Oiled wood is yellowish and darkens with age.

 Additional uses

Animal feeds

Putty

Sealants

Caulking compounds

Brake linings

Linoleum

Earthen floors

Adobe

Textiles

Bicycle maintenance as a thread fixative, rust inhibitor and lubricant

Foundry products

Leather treatment

Polishes, varnishes and oil paints

Composition ornament for moulded decoration

Animal care products

Wood preservation

Synthetic resins

Treatment for the raw willow wood used to make cricket bats. Linseed oil has a special cultural place in cricket-playing countries.

 Boiled linseed oil

Boiled linseed oil is used as a paint binder or as a wood finish on its own. Heating the oil makes it polymerize and oxidize, effectively making it thicker and shortening the drying time. Today most products labeled as "boiled linseed oil" are a combination of raw linseed oil, petroleum-based solvent and metallic dryers. The use of metallic dryers makes boiled linseed oil inedible. There are some products available that contain only heat-treated linseed oil, without exposure to oxygen. Heat treated linseed oil is thicker and dries very slowly. These are usually labeled as "polymerized" or "stand" oils, though some may still be labeled as boiled.

 Spontaneous combustion

Rags dampened with boiled linseed oil are a fire hazard, because they provide a large surface area for oxidation of the oil. The oxidation is an exothermic reaction which accelerates as the rags get hotter. Such rags should be washed, soaked with water or incinerated to avoid unexpected spontaneous combustion .

 Nutrient content

Nutrition information from a typical commercially available flaxseed oil:[citation needed]

Per 1 Tbsp (14 g)

Calories: 130

Calories from fat:130

Total fat: 14g

Omega-3: 8g

Omega-6: 2g

Omega-9: 3g

 References

^ Flaxseed Oil. University of Maryland Medical Center (April 2002). Retrieved on 2006-11-12.

Dietary Supplements v • d • e

Types

 Amino Acids • Bodybuilding supplement • Energy drink • Energy bar • Fatty acids • Herbal Supplements • Minerals • Probiotics • Vitamins • Whole food supplements

Vitamins and Minerals

 Retinol (Vitamin A) • B vitamins: Thiamine (B1) • Riboflavin (B2)• Niacin (B3)• Pantothenic acid (B5)• Pyridoxine (B6)• Biotin (B7)• Folic acid (B9) • Cyanocobalamin (B12) • Ascorbic acid (Vitamin C) • Ergocalciferol and Cholecalciferol (Vitamin D) • Tocopherol (Vitamin E) • Naphthoquinone (Vitamin K) • Calcium • Choline • Chlorine • Chromium • Cobalt • Copper • Fluorine • Iodine • Iron • Magnesium • Manganese • Molybdenum • Phosphorus • Potassium • Selenium • Sodium • Sulfur • Zinc •

Other Common Ingredients

 Carnitine • Chondroitin sulfate • Cod liver oil • Copper gluconate • Creatine • Dietary fiber • Elemental calcium • Fish oil • Folic acid • Ginseng • Glucosamine • Glutamine • Iron supplements • Japanese Honeysuckle • Krill oil • Lactobacillus • Linseed oil • Red yeast rice • Royal jelly • Saw Palmetto • Spirulina (dietary supplement) • Taurine• Wolfberry • Yohimbine • Zinc gluconate •

Related Articles

 Enzyte • Hadacol • Nutraceutical • Multivitamin •

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