TUNG OIL
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PRODUCT
IDENTIFICATION
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CAS NO.
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8001-20-5
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FORMULA
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MOL WT.
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H.S. CODE
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15154000
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SYNONYMS
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CHINA
WOOD OIL
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CLASSIFICATION
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PHYSICAL AND CHEMICAL
PROPERTIES
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PHYSICAL
STATE
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MELTING
POINT
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BOILING
POINT
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SPECIFIC
GRAVITY
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Solubility in water
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GENERAL DESCRIPTION & APPLICATIONS
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Tung Oil is pressed from the nuts of Tung tree is known
also as China wood oil and nut oil. Major producing countries are mainland
China and South America (Argentina and Paraguay), United States and Africa .
Tung tree farms in the southern U. S. and Argentina now supply tung oil,
formerly available only from China. The oil is still known in some circles as
"China wood oil".
Tung oil is an ideal "binder" or
"vehicle", carrying the resins and driers deep into the pores of
the wood so that sealer and finish coats practically become part of the wood
- drying into an armor-like yet beautiful surface.
Tung oil tree (Aleurites fordii), a deciduous shade tree
native to China. It belongs to the Euphorbia Family (Euphorbiaceae) along
with the candlenut tree (A molucanna), another species with seeds rich in
unsaturated oils. For centuries tung oil has been used for paints and
waterproof coatings, and as a component of caulk and mortar. It is an
ingredient in ink and is commonly used for a lustrous finish on wood. Some
woodworkers consider tung oil to be one of the best natural finishes for
wood.
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).
Other
unsaturated plant oils, such as castor oil and linseed oil, take longer to
dry and leave an oily residue until they soak into the wood surface. Tung oil
's ability to dry quickly and polymerize into a tough, glossy, waterproof
coating has made it especially valuable in paints, varnishes, linoleum,
oilcloth and printing inks.
The largest application for the oil is paint and varnish ,
and also wide utilized by soap ,inks, electrical insulators, furniture, shipbuilding,
etc.
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SALES SPECIFICATION
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Appearance
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transparent or
slightly or slightly turbid
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Color
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Not darker than a
freshly prepared solution containing 0.4mg. K2Cr2O7 in 100ml. conc. H2S04
(sp. gr. 1.84)
or Gardner: 9 max |
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Density D20/4
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0.9360-0.9395
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Refractive Index
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1.5170-1.5520
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Iodine Value (WIJS)
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163-173
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Saponification Value
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190-195
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Moisture &
Impurities
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0.3% max
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F.F.A.
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4% max
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Worstall's Heat Test
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7.5 minutes max
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Beta Tung Oil Test
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no crystalline
precipitate
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TRANSPORTATION
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PACKING
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In galvanized iron
drums of 190kgs net each. 80drums per 20' container.
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HAZARD CLASS
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UN NO.
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REMARK
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The above information is believed to be accurate and presents
the best explanation currently available to us. We assume no liability
resulting from above content. The technical standards are formulated and
revised by customers’ requirement and us, if there are any changes, the
latest specification will be executed and confirmed in the contract.
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Kamis, 07 Agustus 2014
TUNG OIL
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