7709-79-7

Basic information

• Product Name: bis(2-hydroxyethyl) piperazine-1,4-dicarboxylate
• CAS NO: 7709-79-7
• Molecular Formula: C₁₀H₁₈N₂O₆
• Molecular Weight: 262.2597
• Mol File: 7709-79-7.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 439°C at 760 mmHg
• Flash Point: 219.3°C
• Density: 1.367g/cm³
• Vapor Pressure: 1.49E-09mmHg at 25°C
• Refractive Index: 1.536
• CAS DataBase Reference: bis(2-hydroxyethyl) piperazine-1,4-dicarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: bis(2-hydroxyethyl) piperazine-1,4-dicarboxylate(7709-79-7)
• EPA Substance Registry System: bis(2-hydroxyethyl) piperazine-1,4-dicarboxylate(7709-79-7)

Safety Data

• Hazardous Substances Data: 7709-79-7(Hazardous Substances Data)

Upstream product

• 110-85-0 piperazine 
• 96-49-1 [1,3]-dioxolan-2-one 

Downstream Products

• 60511-60-6 piperazine-1,4-dicarboxylic acid bis-(2-benzoyloxy-ethyl) ester 

Relevant articles and documents

Aliphatic thermoplastic polyurethane-ureas and polyureas synthesized through a non-isocyanate route

A simple non-isocyanate route for synthesizing aliphatic thermoplastic polyurethane-ureas (TPUUs) and thermoplastic polyureas (TPUreas) is presented. Melt transurethane polycondensation of isophorone diamine or diethylene glycol bis(3-aminopropyl) ether with bis(hydroxyethyl) hexanediurethane, bis(hydroxyethyl) isophoronediurethane or bis(hydroxyethyl) piperazinediurethane was conducted at 170?°C under a reduced pressure of 3 mmHg. A series of thermoplastic TPUUs and TPUreas were prepared, and were characterized by gel permeation chromatography, FT-IR, 1H-NMR, differential scanning calorimetry, thermogravimetric analysis, and tensile testing. The TPUUs and TPUreas have an Mn up to 14 900 g mol-1, an Mw up to 43 700 g mol-1, Tg between -18.6?°C and 116.8?°C, and an initial decomposition temperature of over 222.3?°C. A flexible TPUU exhibits a melting temperature of 77.7?°C, a tensile strength of 6.46 MPa, and an elongation at break of 180.20%.