Read the MSDS Sheets
Real boiled
linseed oil gives much better durability and water protection, fake non-boiled
linseed oil does NOT plus it is TOXIC.
Toxic Linseed oil
1. Hazardous Ingredients, Cobalt Neodecanoate, Cobalt 2-Ethylhexanoate, Mineral Spirits, Diethylene Glycol Monomethyl Ether, Manganese Neodecanoate, Manganese 2 Ethylhexanoate
2. Potential Chronic Health Effects:
Signs and Symptoms: Effects of overexposure include irritation of the nose and throat,
irritation of the digestive tract and signs of nervous system depression (e.g., headache,
drowsiness, dizziness, loss of coordination and fatigue).
3. Skin Protection: Prevent skin contact. Wear chemical-resistant flexible-type gloves
(neoprene, PVC, butyl, nitrile or similar). Depending on conditions of use additional protective equipment may be necessary such as face-shield, apron or coveralls.
http://www.newparks.com/PDF/MSDS/SOLVENTS/BoiledLinseedOil.pdf
Nontoxic Linseed oil
1.
Linseed oil, CAS # 8001-26-1, % by Weight 100 (
100% pure linseed oil)
2. Toxicological Data on Ingredients:
Linseed oil LD50: Not available. LC50: Not available. (no toxic additives)
3. DOT Classification: Not a DOT controlled material (United States).
http://www.sciencelab.com/xMSDS-Linseed_oil-9924500