18928-62-6

Basic information

• Product Name: N,N'-bis(2-hydroxyethyl)terephthaldiamide
• Synonyms: N,N'-bis(2-hydroxyethyl)terephthaldiamide;N,N'-Bis(2-hydroxyethyl)-1,4-benzenedicarboxamide;Einecs 242-682-4;1-N,4-N-bis(2-hydroxyethyl)benzene-1,4-dicarboxamide;Terephthalic acid bis-N-(2-hydroxyethyl)amide
• CAS NO: 18928-62-6
• Molecular Formula: C₁₂H₁₆N₂O₄
• Molecular Weight: 252.26644
• EINECS: 242-682-4
• Mol File: 18928-62-6.mol
• Article Data: 5

Chemical Properties

• Melting Point: 227.2 °C(Solv: ethanol (64-17-5); water (7732-18-5))
• Boiling Point: 609.2°Cat760mmHg
• Flash Point: 322.2°C
• Appearance: /
• Density: 1.273g/cm³
• PKA: 13.07±0.46(Predicted)
• CAS DataBase Reference: N,N'-bis(2-hydroxyethyl)terephthaldiamide(CAS DataBase Reference)
• NIST Chemistry Reference: N,N'-bis(2-hydroxyethyl)terephthaldiamide(18928-62-6)
• EPA Substance Registry System: N,N'-bis(2-hydroxyethyl)terephthaldiamide(18928-62-6)

Safety Data

• Hazardous Substances Data: 18928-62-6(Hazardous Substances Data)

Usage

General Description

N,N'-bis(2-hydroxyethyl)terephthaldiamide, also known as BHET, is a chemical compound that is commonly used in the production of polyethylene terephthalate (PET) plastics. It is a diamide derivative of terephthalic acid, and the addition of hydroxyethyl groups makes it particularly well-suited for use in the manufacture of PET. BHET acts as a precursor in the synthesis of PET and is often used as a monomer in the polymerization reaction. It is also used as a plasticizer and as an additive to enhance the thermal and mechanical properties of PET. BHET is an important chemical in the plastic industry and is crucial for the production of a wide range of PET-based products, including bottles, packaging materials, and synthetic fibers.

Upstream product

• 141-43-5 ethanolamine 
• 636-09-9 diethyl terephthalate 
• 120-61-6 1,4-benzenedicarboxylic acid dimethyl ester 
• 2669-15-0 N,N'-terephthaloylbis(6-hexanelactam) 

Downstream Products

• 124245-51-8 N,N'-bis-[2-(2-carboxy-benzoyloxy)-ethyl]-terephthalamide 
• 51124-38-0 4,5,4',5'-tetrahydro-2,2'-cyclohexane-1,4-diyl-bis-oxazole 
• 18126-24-4 2,2'-bisethanol 
• 51575-77-0 1,4-Phenylene-2,2'-bisoxazole 
• 40651-69-2 C₁₂H₁₂Cl₂N₄O₄ 
• 7426-75-7 1,4-bis(4,5-dihydro-2-oxazolyl)benzene 
• 40651-60-3 N,N'-bis-(2-chloro-ethyl)-terephthalamide 
• 124105-50-6 N,N'-bis-[2-(3-chloro-benzoyloxy)-ethyl]-terephthalamide 

Relevant articles and documents

Molecular and crystal structure of 4,5,4',5'-tetrahydro-2,2'-(l,4-phenylene)bisoxazoline

4,5,4',5'-Tetrahydro-2,2'-(l,4-phenylene)bisoxazoline, which is one of the most promising stabilizers-consolidators of heterochain polymers, was studied by X-ray structural analysis.

SYNTHESIS, STRUCTURE, AND SPECTRAL PROPERTIES OF SOME BIOXAZOLES

Syntheses of systems containing two oxazole rings from aldehydes obtained by formylating 2-phenyl-, 2-(2-furyl)-, and 2-(2-thienyl)oxazole have been developed.Terephthalate and thiophen-2,5-dicarboxylate esters have been used to obtain 2,2'-(1,4-phenylene)- and 2,2'-(2,5-thienylene)bisoxazoles.The PMR, UV, and luminescence spectra of these systems have been examined, and quantum chemical calculations carried out in the PPP approximation.

Aminolysis of N-acyllactams

The overall second-order rate constants of aminolysis of N-benzoyllactams of different ring size, the rate constants of aminolysis of N,N'-isophthaloyl- and N,N'-terephthaloylbis(6-hexanelactam) to the first and second stages and the ratio of splitting of the exocyclic and endocyclic amide bond by octylamine were determined in THF at 50 deg C.The effect of the type of amine and medium on the rate of aminolysis was examined.