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Items | Standard |
Relative density | 0.925~0.945(15/15℃) |
Freezing point | 2~3℃ |
Iodine Value(WIJS) | 160~170 |
Specific Gravity | 0.9360~0.9395 |
Refractive index | 1.5185~1.5225 |
Thermal polymerization test (washer to take off the test) | It will become solid under the condition of 282℃ within 7min30s. it won’t stick on the knife when being cut and it will be crumbled when being pressed. |
Color (Gardner) | 7-9 |
Smell | Tung oil inherent normal smell, no peculiar smell |
Transparence(let stand for 24h/20℃) | Transparent |
Acid value(mgKOH/g) | 4.0 max |
Moisture & impurities,% | 0.10 |
β- tung oil test(3.3~4.4℃ after 24 hours) | No crystallization precipitation |