Tetrahydrophthanlic anhudride(THPA)
Chemical Name: cis-1,2,3,6-Tetrahydrophthalic anhydride, Tetrahydrophthalic anhydride, cis-4-Cyclohexene-1,2-dicarboxylic anhydride, THPA.
CAS No.: 85-43-8
Product Specification
| Appearance | White Flakes |
| Melted Color, Hazen | 60 Max. |
| Content,% | 99.0 Min. |
| Melting point,℃ | 100±2 |
| Acid content , % | 1.0 Max. |
| Ash (ppm) | 10 Max. |
| Iron (ppm) | 1.0 Max. |
| Structure Formula | C8H8O3 |
Physical And Chemical Characteristics
| Physical State(25℃) | Solid |
| Appearance | White Flakes |
| Molecular Weight | 152.16 |
| Melting Point | 100±2℃ |
| Flash Point | 157℃ |
| Specifical Gravity(25/4℃) | 1.2 |
| Water Solubility | decomposes |
| Solvent Solubility | Slightly Soluble: petroleum ether Miscible: benzene, toluene, acetone, carbon tetrachloride, chloroform, ethanol, ethyl acetate |
Applications
s an organic intermediate,THPA is usually used in the production of alkyd and unsaturated polyester resins,coatings and the curing agent for the epoxy resins,and also used in insecticides,sulfide regulator, plasticizers, surfactant, alkyd resin modifier,pesticides and the raw materials of pharmaceuticals.
As raw materials for the production of unsaturated polyester, THPA mainly improved the air-drying performance of resins.The performance is more obvious especially in the production of high-grade resin putty and air-drying coatings.
Packing
25kg/bag, 500kg/bag.
Storage
Store in cool, dry places and keep away from fire and moisture.