Triethanolamine is a colorless, transparent and viscous liquid at room temperature, with a slight ammonia smell. It is hygroscopic and can absorb moisture and carbon dioxide in the air. Can be freely mixed with water and alcohol, soluble in chloroform, slightly soluble in benzene and ether. The pH of 0.1moI/L solution is 10.5. There is a danger of burning when exposed to high heat, open flame or contact with oxidants. Its aqueous solution is corrosive.
The application of triethanolamine in anti-rust in the machinery industry:
The triethanolamine oleic acid soap produced by the reaction of triethanolamine and oleic acid can be used for emulsification The properties of agents and rust inhibitors and their condensates are closely related to the ratio of triethanolamine and oleic acid. Triethanolamine oleic acid soap soluble in oil or solvent is often used in metal processing products, such as anti-rust oil, cutting grease and other products. Lead oleate salt made of lead bromide and triethanolamine oleic acid soap is an anti-oxidant. Rust oil has good anti-rust properties on steel, especially cast iron, which can be used as a thin layer of oil.
Triethanolamine and oleic acid can also be used to produce an excellent anti-rust ester for mechanical processing: such as oleic acid triethanolamine ester, which is made by combining high-quality and equimolar triethanolamine under reduced pressure. Produced by high temperature dehydration and esterification reaction. The acid value drops below 1 mg/g and is filtered. The combined use of this synthetic ester and base oil, silicone oil and anti-rust additives to formulate an extreme pressure agent can significantly improve the extreme pressure and anti-wear performance of gear oil. In S-P type gear oil, adding 1% can increase the Timken OK value by 30 to 50 pounds, and can improve the oil’s corrosion resistance, rust prevention and oxidation stability.
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