cis-1,2,3,6-Tetrahydrophthalic anhydride CAS#935-79-5
CAS Number: 935-79-5
Chemical Formula: C8H8O3
Synonyms:
CIS-4-CYCLOHEXEN-1,2-DIMETHANOIC ANHYDRIDE
CIS-4-TETRAHYDROPHTHALIC ANHYDRIDE
CIS-DELTA4-TETRAHYDROPHTHALIC ANHYDRIDE
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Powder
cis-1,2,3,6-Tetrahydrophthalic anhydride CAS#935-79-5
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 Chemical 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) |
Fp | 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 |
InChI | 1S/C8H8O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-2,5-6H,3-4H2/t5-,6+ |
InChIKey | KMOUUZVZFBCRAM-OLQVQODUSA-N |
SMILES | [H][C@@]12CC=CC[C@]1([H])C(=O)OC2=O |
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) |
Safety Information |
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 | TSCA listed |
HazardClass | 8 |
PackingGroup | III |
HS Code | 29173990 |
Storage Class | 8A - Combustible corrosive hazardous materials |
Hazard Classifications | Aquatic Chronic 3 |
Product Application of cis-1,2,3,6-Tetrahydrophthalic anhydride CAS#935-79-5
Tetrahydrophthalic Anhydride is an anhydride hardener mainly used in the fields of coatings, epoxy resin curing agents, polyester resins, adhesives, plasticizers, pesticides, etc. It is also used as a chemical intermediate for light colored alkyds.
Tetrahydrophthalic Anhydride is an organic compound obtained from the reaction of Maleic Anhydride and Butadiene.
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