A2439712
cis-1,2,3,6-Tetrahydrophthalic anhydride , 97% , 935-79-5
Synonym(s):
cis-4-Cyclohexene-1,2-dicarboxylic anhydride
CAS NO.：935-79-5
Empirical Formula: C8H8O3
Molecular Weight: 152.15
MDL number: MFCD00005916
EINECS: 213-308-7
| Pack Size | Price | Stock | Quantity |
| 100G | RMB24.00 | In Stock |
|
| 500G | RMB74.40 | In Stock |
|
| 2.5KG | RMB297.60 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 98 °C |
| Boiling point: | 234.6°C (rough estimate) |
| Density | 1.2143 (rough estimate) |
| vapor density | 5.2 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | 1.4447 (estimate) |
| Flash point: | 156 °C |
| storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
| solubility | soluble in Toluene,Benzene |
| form | powder to crystal |
| color | White to Almost white |
| Water Solubility | REACTS |
| Sensitive | Moisture Sensitive |
| BRN | 82341 |
| Exposure limits | ACGIH: TWA 0.01 mg/m3 OSHA: TWA 0.25 ppm(1 mg/m3) NIOSH: IDLH 10 mg/m3; TWA 0.25 ppm(1 mg/m3) |
| CAS DataBase Reference | 935-79-5(CAS DataBase Reference) |
| NIST Chemistry Reference | cis-1,2,3,6-Tetrahydrophthalic anhydride(935-79-5) |
| EPA Substance Registry System | 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, (3aR,7aS)-rel- (935-79-5) |
Description and Uses
Tetrahydrophthalic anhydride is an organic compound with the formula C6H8C2O3. The compound exists as two isomers, this article being focused on the more common cis isomer. It is a precursor to other compounds including the dicarboxylic acid tetrahydrophthalic acid as well the tetrahydrophthalimide, which is a precursor to the fungicide Captan. It is a white solid that is soluble in organic solvents.
Tetrahydrophthalic anhydride, the cis isomer, is prepared by the Diels-Alder reaction of butadiene and maleic anhydride.
cis-1,2,3,6-Tetrahydrophthalic anhydride (THPA) can be used as:
- A curing agent for epoxides.
- A chemical modifier in the modification of polystyrene via Friedel-Crafts acylation for enhancing the thermal stability of the polymer.
- A reactant for the synthesis of cis-tetrahydroisoindole-1,3-dione derivatives and cyclic diimides.
Safety
| Symbol(GHS) |   GHS05,GHS08 |
| Signal word | Danger |
| Hazard statements | H317-H318-H334-H412 |
| Precautionary statements | P261-P273-P280-P302+P352-P304+P340+P312-P305+P351+P338 |
| Hazard Codes | Xn |
| Risk Statements | 41-42/43-52/53 |
| Safety Statements | 22-24-26-37/39-61-52/53-42/43-41 |
| RIDADR | UN 2698 8/PG 3 |
| WGK Germany | 3 |
| RTECS | GW5775000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 29173990 |
