40496-93-3

Basic information

• Product Name: 4-TERT-BUTYLPHTHALIC ANHYDRIDE
• Synonyms: 4-TERT-BUTYLPHTHALIC ANHYDRE
• CAS NO: 40496-93-3
• Molecular Formula: C₁₂H₁₂O₃
• Molecular Weight: 204.22
• Mol File: 40496-93-3.mol
• Article Data: 2

Chemical Properties

• Melting Point: 70-75 °C(lit.)
• Boiling Point: 333.3±21.0 °C(Predicted)
• Appearance: /
• Density: 1.206±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 4-TERT-BUTYLPHTHALIC ANHYDRIDE(CAS DataBase Reference)
• NIST Chemistry Reference: 4-TERT-BUTYLPHTHALIC ANHYDRIDE(40496-93-3)
• EPA Substance Registry System: 4-TERT-BUTYLPHTHALIC ANHYDRIDE(40496-93-3)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• Hazardous Substances Data: 40496-93-3(Hazardous Substances Data)

Upstream product

• 92904-69-3 (+/-)-3c-tert-butyl-cyclohex-4-ene-1r,2c-dicarboxylic acid 
• 108-31-6 maleic anhydride 
• 1515-79-3 5,5-dimethyl-1,3-hexadiene 
• 100257-05-4 4-tert-Butyl-3a,4,7,7a-tetrahydro-isobenzofuran-1,3-dione 

Downstream Products

• 93305-71-6 3-(1-carboxy-1-methyl-ethyl)-phthalic acid 

Relevant articles and documents

17O NMR Study of Steric Interactions in Hindered N-Substituted Imides

17O NMR spectroscopic data (natural abundance in acetonitrile at 75 deg C) were obtained for a series of N-substituted phthalimides (1-11),a series of N-substituted succinimides and maleimides (12-19),and N-substituted phthalamides (20-22).The 17O NMR data showed large deshielding effects as the steric bulk of the N-substituent increased ; introduction of a 3-substituent in the phthalimide series produced additional deshielding.The deshielding effects of 3-substitution and N-substitution in the phthalimides were found to be roughly additive.The results correlated with in-plane bond angle distortions (X-ray results and molecular mechanics calculations.)The results for N-arylphthalimides showed that the aromatic ring was rotated out of the plane (torsion angle effect) in those cases.