65133-69-9

Basic information

• Product Name: 1,4-Benzenedicarboxylic acid, 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl ester
• CAS NO: 65133-69-9
• Molecular Formula: C14H18O7
• Molecular Weight: 298.293
• Mol File: 65133-69-9.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,4-Benzenedicarboxylic acid, 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-Benzenedicarboxylic acid, 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl ester(65133-69-9)
• EPA Substance Registry System: 1,4-Benzenedicarboxylic acid, 2-(2-hydroxyethoxy)ethyl 2-hydroxyethyl ester(65133-69-9)

Safety Data

• Hazardous Substances Data: 65133-69-9(Hazardous Substances Data)

Upstream product

• 148465-45-6 Deloxan ASP I/7 
• 107-21-1 ethylene glycol 
• 959-26-2 Bis(2-Hydroxyethyl)terephthalat 
• 111-46-6 diethylene glycol 

Relevant articles and documents

PROCESSES FOR THE PURIFICATION OF BIS(2-HYDROXYETHYL) TEREPHTHALATE

An object of the present invention is to provide a method of obtaining BHET of high purity efficiently from an EG (ethylene glycol) solution containing crude BHET (bis(2-hydroxyethyl)terephthalate), especially a decomposition product solution obtained by decomposing a polyester containing PET (polyethylene terephthalate) as a main component, by use of EG, while minimizing by-production of impurity components such as DEG (diethylene glycol), DEG ester and oligomers. The present invention is a method of purifying BHET by subjecting the decomposition product solution to crystallization and solid-liquid separation under specific temperature conditions. Further, the present invention is a method of purifying BHET which comprises evaporation steps of evaporating low-boiling-point components from the decomposition product solution under specific conditions so as to obtain a melt solution and a molecular distillation step of distilling the obtained melt solution under specific conditions so as to obtain a specific fraction.