Tributyl phosphate, an organic compound with the formula C12H27O4P or (C4H9)3PO4, is a colorless, almost odorless liquid. Mainly used as a solvent, but also often as nitrocellulose, cellulose acetate, chlorinated rubber and polyvinyl chloride plasticizer, rare metal extractant, etc., heat exchange medium. Due to its low surface tension, slightly soluble in water, it can be used as an industrial defoamer, effectively making the formed foam film in an unstable state and quickly defoaming. Cannot be used in food/cosmetics.

Colorless to light yellow transparent liquid with characteristic odor of the product. Melting point is less than -80ºC, boiling point is 289ºC, decomposes at boiling point temperature, relative density 0.9729 (25/4ºC), relative vapor density 9.2, dynamic viscosity 3.5-4.0mN/m, refractive index 1.4226, octanol/water distribution Log value of coefficient: 4.0, solubility in water is 0.1% (25ºC), solubility in water is 7% (25ºC), soluble in most organic solvents and hydrocarbons, insoluble or slightly soluble in glycerin, hexylene glycol and Amines.
It has the properties of ester and hydrolyzes under alkaline conditions. Dry hydrogen chloride is introduced at room temperature to generate chlorobutane. In the presence of boron trif luoride, it reacts with benzene to produce sec -butylbenzene and 1,4-di-sec- butylbenzene. Treat with an iline and dilute sodium hydro xide solution to generate dibutylan iline.

Used as extractants for metal complexes, nitrocellulose, cellulose acetate, plasticizers for chlorinated rubber and polyvinyl chloride, solvents for Coatings, Inks and Adhesives

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Tributyl phosphate, known commonly as TBP, is an organophosphorus compound with the chemical formula (CH3CH2CH2CH2O)3PO. This colourless, odorless liquid finds some applications as an extractant and a plasticizer.
 It is used as a solvent for cellulose acetate, plasticizers and antifoam agents. 

應用

1. As a polymerization inhibitor: Tributyl phosphate can be used as a polymerization inhibitor for polymer materials to prevent oxidative polymerization of polymer materials during storage and transportation.
   2. As a lubricant: Tributyl phosphate has good lubricating properties and can be used to prepare lubricants to reduce friction and wear.
   3. As a surfactant: Tributyl phosphate can be used as a surfactant to improve the stability of liquid systems, such as emulsification, dispersion and dissolution.
   4. As a solvent: Tributyl phosphate can be used as a solvent to dissolve and dilute other compounds, such as paints, inks and coatings.
   5. Preparation of phosphate ester compounds: Tributyl phosphate can be used as raw material to prepare other phosphate ester compounds, such as trimethyl phosphate, triethyl phosphate, etc.
   6. As a flame retardant: Tributyl phosphate can be used as a flame retardant to improve the flame retardant properties of the material.
   7. Medical applications: Tributyl phosphate can be used to prepare drugs, such as tributyl phosphate antiviral drugs.
   8. Pesticide application: Tributyl phosphate can be used to prepare pesticides, such as tributyl phosphate insecticides, fungicides, etc.
   9. Analytical chemistry applications: Tributyl phosphate can be used as a reagent for experiments in the field of analytical chemistry.
   In short, tributyl phosphate has a variety of applications and is widely used in chemical industry, petroleum, medicine, pesticides, coatings and other fields.