What is 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. Pure Tung oil is an excellent alternative to other drying oils, such as walnut, linseed and soy.
The Benefits of Using Tung Oil as a Finish
There are many reasons why people love tung oil for their projects, and one of the most popular is its flexible, durable, food safe, and protective waterproof finish that doesn’t mold, darken or go rancid. On a practical note, tung oil also dries faster than other oils, making it easier and less time-consuming to apply. From an aesthetic standpoint, tung oil also cures to a beautiful matte finish that adds depth to woodgrain, producing an antique-style finish on any surface.
The Many Uses of Tung Oil
Carpenters, woodworkers, crafters, and hobbyist alike all love tung oil, and over the years they’ve used it as a beautiful and protective finish on a wide number of projects and surfaces. For instance, tung oil has been used with fantastic results to finish wood, bamboo, concrete, stone, brick, and even metal surfaces. Tung oil is a favorite for finishing wood floors, cabinetry, decks, siding, furniture, guitars and other musical instruments, handmade toys, and more. If you’re wondering if it’s the right wood oil for your project, it probably is!
ANALYSIST ITEM
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Standard Value
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Color(Gardner chroma) ≤
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10
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Specific gravity(20/4℃)
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0.9360-0.9395
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Refractive index
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1.5185-1.5225
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Iodine value (Merriam-webster method)
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163-175
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Saponification value
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190-199
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Moisture and impurities ≤%
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0.10
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Acid value (KOH)/(mg/g) ≤
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5
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Washout experiment
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282℃, 7min30s
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Bet2 type of Tung oil experiment
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Crystallization free precipitation
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