CAS number | 935-79-5 |
Molecular formula | C8H8O3 |
Product name | cis-1,2,3,6-Tetrahydrophthalic anhydride |
Molecular Structure | ![]() |
Appearance:White to cream crystalline powder
Density:1.375 g/cm3
Boiling Point:195ºC 5mm
Melting Point:98-102ºC
Flash Point:156ºC
Refractive Index:1.529
Stability:Stable under normal temperatures and pressures. May decompose on exposure to moist air or water.
Storage Condition:Keep container closed when not in use. Store protected from moisture.
Vapor Pressure:0.001mmHg at 25°C
Cis-1,2,3,6-Tetrahydrophthalic anhydride is an anhydride produced by the reaction of maleic anhydride with terephthalic acid in a process known as Friedel-Crafts acylation. This product has a wide range of applications in the plastics, elastomers and adhesives industries.
The anhydride is a white to light yellow crystalline solid with a melting point of approximately 150 degrees Celsius. It has a very low vapor pressure and is soluble in most organic solvents such as acetone, ether, and ethanol. It is relatively stable to heat and light and has a low odor.
Cis-1,2,3,6-Tetrahydrophthalic anhydride is used as a cross-linking agent in the production of thermoset plastics and elastomers. It is also used as a curing agent for epoxy resins, and as a hardener for some polyurethanes. In the adhesives industry, it is used as a cross-linking agent to improve the strength and durability of the adhesive bond.
Cis-1,2,3,6-Tetrahydrophthalic anhydride is a versatile and effective cross-linking agent for a wide range of applications. It is an economical and safe alternative to other anhydrides, and it has been proven to be an effective and reliable cross-linking agent.