136891

cis-1,2,3,6-Tetrahydrophthalic anhydride

95%

• Synonym(s): cis-4-Cyclohexene-1,2-dicarboxylic anhydride
• Empirical Formula (Hill Notation): C₈H₈O₃
• CAS Number: 935-79-5
• Molecular Weight: 152.15
• Beilstein: 82341
• EC Number: 213-308-7
• MDL number: MFCD00005916
• UNSPSC Code: 12162002
• PubChem Substance ID: 24848300
• NACRES: NA.23

Properties

• vapor density: 5.2 (vs air)
• Quality Level: 100
• vapor pressure: <0.01 mmHg ( 20 °C)
• Assay: 95%
• form: flakes
• mp: 97-103 °C (lit.)
• SMILES string: [H][C@@]12CC=CC[C@]1([H])C(=O)OC2=O
• InChI: 1S/C8H8O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-2,5-6H,3-4H2/t5-,6+
• InChI key: KMOUUZVZFBCRAM-OLQVQODUSA-N

Description

Application

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 Information

• Pictograms: GHS08,GHS05
• Signal Word: Danger
• Hazard Statements: H317,H318,H334,H412
• Precautionary Statements: P261 - P273 - P280 - P302 + P352 - P304 + P340 + P312 - P305 + P351 + P338
• Hazard Classifications: Aquatic Chronic 3 - Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 3
• Flash Point(F): 312.8 °F - closed cup
• Flash Point(C): 156 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves