Tung oil

Chinese Scientific Name: Tung oil
Latin Scientific Name: tung oil
Also Known As: Tung seed oil, Wood tung oil
Distribution Area: Xiushan Tujia and Miao Autonomous County in Chongqing, Dabie Mountain area in Henan, Sichuan Basin, Hunan and Hubei
Characteristics: Alkali-resistant, anti-corrosive, anti-rust, non-conductive, etc.
Composition
Tung oil is a mixture of fatty acid triglycerides. Tung oil and wood oil are red, golden, or yellow in color and are both excellent drying oils.
Standard
Appearance: Clear, transparent liquid
Odor: Characteristic smell of tung oil
Transparency (24h/20°C): A small amount of sediment is allowed
Specific Gravity (20/4°C): 0.9360--0.9395
Refractive Index (20°C): 1.5170--1.5220
Iodine Value: 163--173
Saponification Value: 190--195
Drying Time: About 3~7 days in summer, about 3~20 days in winter.
Color: Red <5
Acid Value (mgKOH/g): <7
Moisture and Volatiles: <0.20%
Impurities: <0.20%
Differences
A: Boiled tung oil: Apply and let it air dry naturally, then sand and reapply, repeating several times; Varnish: Apply a coat of varnish and let it air dry naturally, then sand and reapply varnish, repeating several times.
B: Boiled tung oil: After application, the wood completely absorbs the oil, increasing the oil content of the wood. Even if the surface is damaged, it does not affect the wood or its use, making it more durable; Varnish: Only applied to the surface, providing a glossy finish and good feel.
C: Boiled tung oil: Pure natural, green, and environmentally friendly! Absolutely no chemical additives; Varnish: As we all know~~