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2. Specification
ITEMS | TUNG OIL |
---|---|
Appearance | Transparent or slightly turbid |
Color (GARDNER) | ¡Â10 |
Specific gravity (20¡É/4¡É) | 0.9360 - 0.9395 |
Refractive index (20¡É) | 1.517 - 1.522 |
Iodine value | 163 - 173 |
Saponification value | 190 - 195 |
Moisture & impurities | 0.3% max. |
Free fatty acid (FFA) | 4% max. |
Worstall's heat test | 7.5 minutes max. |
Beta tung oil test | Negative (no crystalline precipitate) |
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