Density | 0.937g/mLat 25°C(lit.) |
Flash Point | >230°F |
Color | Gardner: ≤12 |
Storage Condition | 2-8°C |
Refractive Index | n20/D 1.52(lit.) |
Use | For the production of paint, etc |
WGK Germany | - |
FLUKA BRAND F CODES | 2 |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Introduction | Tung oil is obtained from the hot pressing of tung oil, is a drying oil (iodine value of 157~170), with high temperature (200~250 deg C) heating, can be due to self polymerization gel, or even completely cured. This particular property is due to the polymerization of its main component, α-Tung olein, a property not found in other drying oils. Tung oil is a dark yellow liquid, which is a natural oil extracted from the seeds of vegetable oil tung trees. However, this kind of oil has serious toxicity and cannot be taken orally, it is a kind of medicinal efficacy of Chinese herbal medicine. |
Main components | the mixed fatty acids of tung oil contain 74.5% of α-olefic acid, 9.7% of linoleic acid, 8.0% of oleic acid, and 3.3% of saturated fatty acids, unsaponifiable matter 0.1%. |
poisoning mechanism | Tung oil (Tungol) is the oil extracted from the fruit of the deciduous tree of Euphorbiaceae Tung oil tree. Tung oil toxic, tung oil poisoning caused by the mistake of tung oil as edible vegetable oil to eat. Eating Pure tung oil can cause acute poisoning, continue to eat mixed with tung oil edible oil can occur subacute heavy. The composition of tung oil 90% for containing three double bonds of unsaturated fatty acids-oleic acid, in addition still contains a small amount of oleic acid, saturated and fatty acids and linoleic acid. Tung oil acid toxic, has a stimulating effect on the gastrointestinal tract, after absorption by the kidney excretion, it can damage the kidneys, the liver, spleen, nervous system can also damage, especially in patients with liver damage, can make its symptoms, liver function deteriorated rapidly. |
clinical manifestations of poisoning [ | 1. Acute Tung oil poisoning, mostly occurred between 40 minutes and 4 hours after eating, manifestations: (1) gastrointestinal symptoms: Nausea, Vomit, Diarrhea, hematochezia caused by the stimulation of the gastrointestinal tract by tung oil. (2) neuropsychiatric symptoms: patients may have thirst, mental burnout, restlessness, Head Pain dizziness, occasional miosis, slow response to light, Dyspnea, etc. Severe cases may present with confusion, convulsions, Coma and Shock. Accompanied by dehydration and acidosis caused by neuropsychiatric symptoms. (3) kidney damage, causing nephritis, protein, cast and white blood cells in urine. (4) liver damage, can cause toxic hepatitis, manifested as loss of appetite, liver pain, liver enlargement, poor liver function. If the original liver disease can aggravate symptoms. Ⅱ. Subacute poisoning: the symptoms of gastrointestinal tract were mild and lasted for a long time (about 15 days on average), Such as Fatigue, lower extremity edema and gradually expanded, limb soreness, limb weakness, numbness, shortness of breath, elevated body temperature, skin flushing and burning, and there are purple reticular markings. Heart enlargement, systolic murmurs can be heard in the apical region, diastolic blood pressure decreased, pulse pressure increased, lower limb tactile and pain sensation decreased, the majority of knee tendon hyperreflexia, a small number of patients have Rales in the lungs, liver enlargement, the heart may have a running horse rhythm and eventually heart failure. |
Application | in recent years, the deep development and research of tung oil products at home and abroad are very active, the main research direction is in the electronics industry, advanced printing inks, heat-sensitive copying materials, integrated circuit board materials, marine paint and current product coatings, electrical insulation coatings, chemical industry, surfactants, defoamers, fungicides, adhesives, synthetic resins, plastic industry, rubber industry. Under the action of alkali and acid, the main component of tung oil, the triglyceride of tung oil is hydrolyzed into unsaturated Tung oil acid containing three conjugated double bonds. The conjugated double bond in the molecular structure is adjacent to the hydrogen on the carbon atom. Under the action of O2 in the air, the hydrogen abstraction reaction occurs, and the generated hydroperoxide is decomposed to generate free radicals, and the polymerization reaction is initiated. According to the molecular structure characteristics of tung oil, the researchers use the principle of addition, polycondensation, esterification to explore the process. The use of tung oil to modify polymer has been reported more, such as Tung oil modified alkyd resin, polyurethane, epoxy resin and silicone resin, etc., but also used to prepare epoxy resin curing agent or copolymerization with other monomers. |
efficacy and function | 1. Pain relief and itching: tung oil is a kind of Chinese herbal medicine that can relieve pain and itching, it can treat human skin diseases that often appear, especially for people with Dermatophytosis and skin inflammation. It has obvious therapeutic effect and can relieve the pain and itching symptoms of human beings. It can be applied directly to the affected area when needed, and can be used up to three times a day. 2, swelling and pain: tung oil is a kind of Chinese herbal medicine that can reduce swelling and pain, can accelerate the body's cold discharge and can promote blood circulation in the human body, winter weather is cold, people's skin surface when chilblain, it can be directly used to treat the treatment, it can be applied to the long area of Chilblain and a moderate massage, can make the swelling and pain caused by chilblain quickly subsided, in the winter after the timely application of tung oil can also prevent chilblain appear. 3, the treatment of burns: tung oil is a kind of heat-clearing and detoxifying Chinese herbal medicine, it is a traditional Chinese medicine clinical treatment of human burn and scald commonly used, in the treatment of injured parts clean, direct application of tung oil, applied two times a day, will make the wound pain, he can also prevent infection, and can speed up the wound healing. 4, the treatment of ulcers: the treatment of human surgical ulcer disease is also an important effect of tung oil, people in the appearance of skin ulcers, you can put it with fresh mulberry bark together, Made of ointment directly applied to the affected area, 1~2 times a day, can add a piece of ulcer surface healing, also can relieve pain, in addition, people's skin surface appear acne, direct external use of tung oil can also reduce swelling and pain to make the condition improved. |
Use | for the production of paints and other |
production method | after screening and cleaning, the tung seeds are dried, peeled, and separated in the shell and kernel separator, then the product was broken with a crushing roller mill. Then the material is fried in a layer-type cooking pot, and the material temperature can reach 130 ℃, and the water content can be reduced to 2%~ 3%. After steaming and frying, the oil yield is about 200 by pressing with a 34% type oil press. Also available 6 solvent oil leaching method of preparation, leaching after removal of solvent that is tung oil. Tung oil by deacidification, dehydration and other refining process can be made of finished products. |