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Tolylene-2,4-diisocyanate
Tolyuene -2, 4-diisocyanate is an important intermediate in organic synthesis. It has high reactivity and can react with amines, alcohols and phenols to produce urea, urate and ester.
It is colorless and transparent liquid at normal temperature and pressure, and is more sensitive to water. It is a relatively stable compound, but easily hydrolyzes and should be kept in a cool, dry, well-ventilated place away from direct sunlight.
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Product Description

Toluene diisocyanate, has six isomers, toluene-2,3-diisocyanate, toluene-2,4-diisocyanate, toluene-2,5-diisocyanate, toluene-2,6-diisocyanate, toluene-3,4-diisocyanate, and toluene-3,5-diisocyanate. Of these, toluene-2,4-diisocyanate and toluene-2,6-diisocyanate are the two most common isomers. Industrial toluene diisocyanate is usually a mixture of toluene-2,4-diisocyanate and toluene-2,6-diisocyanate.

Toluene diisocyanate (TDI) has six isomers: 2,3-TDI, 2,,4-TDI, 2,5-TDI, 2,6-TDI, 3,4-TDI, 3,5-TDI. 2,4-TDI and 2,6-TDI are the most common, and the industrial product is usually a mixture of 2,4-TDI and 2,6-TDI.


Basic information

Product nameTolylene-2,4-diisocyanate
CAS No.584-84-9
MFC9H6N2O2
EINECS No.209-544-5
molecular weight174.16
Melting point20-22 °C(lit.)
Boiling point124-126 °C18 mm Hg(lit.)
Density1.225 g/mL at 25 °C
Flash  point250 °F

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Main Applications

Application 1: Mainly used in polyurethane products, including foamed plastics, polyurethane coatings, polyurethane rubber; polyimide fibers and adhesives also have some applications.

Application 2: Used in synthetic fibers, foamed plastics and rubber, also used as adhesives.


Production method

Toluene is nitrated to dinitrotoluene and then reduced to get toluene diamine. Toluene diamine reacts with phosgene to form TDI (mainly 2,4-isomer).

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Company Profile

Daxunte (Shandong) Chemical Products Co. , Ltd. . Since its establishment, to pursue quality, integrity service as its own responsibility, and constantly enhance technical strength, improve management level. After years of efforts, the company has developed into a cross-regional diversification of the comprehensive enterprise. Located in Jinan, Shandong province, China's largest chemical production and distribution center, Daxunte (Shandong) Chemical Products Co. , Ltd. It is a professional supplier of high-tech chemical products integrating R&D, production and sales. It has an excellent team with many years of chemical professional background and great innovation ability. The company hopes through technological innovation, management innovation, Mechanism Innovation, warehousing logistics innovation, to create the influence of domestic chemical enterprises.

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