TUNG OIL

Tung oil is a drying oil that’s extracted from the seed of the tung tree, which is native to China and a few other Asian countries. The oil has been used for centuries as a water-resistant finish for boats and other wooden objects, as well as to finish stone.

TUNG OIL SPECIFICATIONS:
APPEARNCE:TRANSPARENT OR SLIGHTLY TURBID.
COLOUR:GARDNER 8 (MAX.) OR NOT DARKER THAN A FRESHLY PREPARED SOLUTION CONTAINING 0.4GM K2CR2O7 IN 100ML,CONC.H2SO4(SP.GR,1.84).
SPECIFIC GRAVITY(20/4°C):0.9360-0.9395.
REFRACTIVE INDEX(20°C):1.5170-1.5220.
MOISTURE & IMPURITIES(MAX):0.3%.
FREE FATTY ACIDS(MAX):3%.
IODINE VALUE(WIJS):163-173.
SAPONIFICATION VALUE:190-195.
WORSTALL’S HEAT TEST(MAX):7.5MIN.
BETA TUNG OIL TEST:NEGATIVE(NO CRYSTALLINE PRECIPITATE).