Tung Oil
For paint and varnish
The world's oldest and best wood preservative
Also used in electrical insulator, furniture
Tung Oil
CAS: 8001-20-5
Botanical Source: Aleurites fordii
HS Code: 1515903000
Index | Requirement |
Color | Transparent or Slightly turbid, not darker than 0.4gm potassium chromate in 100ml surphuric acid (s.g.1.84) solution. |
Odor | Inherent tung oil odor |
Specific gravity (20/4°C) | 0.9360-0.9395 |
Refractive Index (20°C) | 1.5170-1.5225 |
Iodine Value | 163-173 |
Saponification value | 190-195 |
Impurity | 0.15% max |
Moisture & Volatile Matter | 0.3% max |
Free Fatty acid | 5% max |
Model Beta tung oil test | Negative (No Crystallization) |
Worstall's Heat test (max) | 282°C ,7mins. become solid within 20S. be not sticky when being cut and easily to be broken into pieces when being pressed |
Packing: In 190kgs drum. 15.2 tons per 20’ container.
Uses: An important use of Tung Oil is for paint and varnish. Tung Oil is the world's oldest and best wood preservative. Tung Oil is also widely used in soap ,inks, electrical insulators, furniture, shipbuilding, etc.
Tung oil is composed primarily of eleostearic (elaeostearic) acid, with smaller amounts of oleic, linoleic and palmitic glycerides. Eleostearic acid is a crystalline unsaturated fatty acid that exists in 2 stereoisomeric forms: An alpha acid occurring as the glycerol ester especially in tung oil, and a beta acid obtained from the alpha acid by irradiation (9, 11, 13-octadecatrienoic acid). The chemical structure of tung oil eleostearic acid:
CH3(CH2)3CH=CHCH=CHCH=CH(CH2)7COOH