3,4,5,6-Tetrahydrophthalic anhydride
Synonym(s):Cyclohexene-1,2-dicarboxylic anhydride
- CAS NO.：2426-02-0
- Empirical Formula: C8H8O3
- Molecular Weight: 152.15
- MDL number: MFCD00005917
- EINECS: 219-374-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:26:18
What is 3,4,5,6-Tetrahydrophthalic anhydride?
Chemical properties
White to cream crystalline powder
The Uses of 3,4,5,6-Tetrahydrophthalic anhydride
3,4,5,6-Tetrahydrophthalic Anhydride is useful in the synthesis and biological evaluation of 6-hydroxypyridazinone benzisoxazoles as an atypical antipsychotics.
Properties of 3,4,5,6-Tetrahydrophthalic anhydride
| Melting point: | 69-73 °C(lit.) |
| Boiling point: | 234.6°C (rough estimate) |
| Density | 1.2000 |
| refractive index | 1.4447 (estimate) |
| storage temp. | 2-8°C |
| solubility | Chloroform (Sparingly, Sonicated), DMSO (Sparingly) |
| form | Crystalline Powder |
| color | White to cream |
| Water Solubility | REACTS |
| BRN | 136335 |
| Stability: | Moisture Sensitive |
| CAS DataBase Reference | 2426-02-0(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Cyclohexene-1,2-dicarboxylic anhydride(2426-02-0) |
| EPA Substance Registry System | 1,3-Isobenzofurandione, 4,5,6,7-tetrahydro- (2426-02-0) |
Safety information for 3,4,5,6-Tetrahydrophthalic anhydride
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Health Hazard GHS08 |
| GHS Hazard Statements |
H317:Sensitisation, Skin H318:Serious eye damage/eye irritation H334:Sensitisation, respiratory H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 3,4,5,6-Tetrahydrophthalic anhydride
| InChIKey | HMMBJOWWRLZEMI-UHFFFAOYSA-N |
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![Ethylene glycol, diethylene glycol, tetrahydrophthalic anhydride, maleic anhydride resin-furandione and 2,2'-oxybis[ethanol]](https://img.chemicalbook.in/CAS/20211123/GIF/25749-47-7.gif)
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