Tetrahydrophthalic Anhydride
Product Description
| Product | Tetrahydrophthalic Anhydride |
| CAS | 85-43-8 |
| Formula | C8H8O3 |
| Synonym | THPA, 4-Cyclohexene-1,2-dicarboxylic anhydride, 1,2,3,6-Tetrahydrophthalic anhydride, 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro- |
Typical Product Specifications
| Density | 1.375 (2520 c) |
| Slightly Soluble | in petrol. ether, ethyl ether |
| Purity | 99.5 % min |
| Maleic Anhydride Content, % | 0.05 % max |
| Appearance | White flakes |
| Appearance | Clear liquid |
| Solidification point | 100.5 C min |
| Colour | 50 Hz max in molten state |
| Acid Content | 1.0 % max |
| Ash | 10 ppm max |
| Iron | 2 ppm max |
| Melting Point | 102 c |
| Vapor Pressure | 0.01 mm (20 c) |
| Molecular weight | 152.16 |
| Flash Point | (oc) 157 c |
| Solubility | benzene, oxygenated and aromatic solvs. |
| Boiling Point | 195 c (50 mm) |
| Chemical Structure |  |
| Notes | Used mainly as a epoxy resin hardener, building block for polyester resins. Also used as a chemical intermediate for plasticizers and adhesives. |
| Class | Specialty Chemicals |
| Function | Resins, Chemical Intermediate |
| Industry | Resin & Coating, Specialty Chemicals |
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