Hydroquinone bis(2-hydroxyethyl)ether Chemical Properties

Melting point:

100-102 °C(lit.)

Boiling point:

185-200 °C (0.3 mmHg)

Density 

1.0143 (rough estimate)

vapor pressure 

0.45Pa at 45℃

refractive index 

1.4720 (estimate)

storage temp. 

Inert atmosphere,Room Temperature

pka

13.99±0.10(Predicted)

form 

Crystalline Powder or Flakes

color 

White to off-white

Odor

odorless

Water Solubility 

practically insoluble

Sensitive 

Hygroscopic

InChIKey

WTPYFJNYAMXZJG-UHFFFAOYSA-N

LogP

0.41 at 30℃

CAS DataBase Reference

104-38-1(CAS DataBase Reference)

EPA Substance Registry System

Ethanol, 2,2'-[1,4-phenylenebis(oxy)]bis- (104-38-1)

Safety Information

Safety Statements 

24/25

WGK Germany 

1

Autoignition Temperature

874 °F

TSCA 

Yes

HS Code 

29094990

MSDS

• Language:English Provider:p-Bis(2-hydroxyethoxy)benzene
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Hydroquinone bis(2-hydroxyethyl)ether Usage And Synthesis

Description

Hydroquinone bis(2-hydroxyethyl) ether (HQEE) is a kind of polyurethane chain extender synthesized by hydroquinone (HQ) and ethylene oxide (EO). With different molar ratios of hydroquinone bis(2-hydroxyethyl)ether (HQEE)/1,4-butanediol 9/91, 18/82 and 27/73, a series of thermoplastic poly(butylene-co-hydroquinone bis(2-hydroxyethyl)ether terephthalates) (PBHT) were synthesized via melt polycondensation. The incorporation of the HQEE group significantly improved the thermal properties of the polymers. However, HQEE did not change the crystal structure of PBT. The Tm values of the copolymers decreased (from 208?°C to 174?°C) with increasing content of HQEE segments, on the contrary, Tg values increased (from 37?°C to 43?°C)[1-2].

Chemical Properties

white to off-white crystalline powder or flakes

Uses

Preparation of polyester, polyolefins, polyurethanes, and hard waxy resins, organic synthesis.

Uses

Hydroquinone bis(2-hydroxyethyl) ether is used to produce 1,4-bis-(2-bromo-ethoxy)-benzene.

Synthesis Reference(s)

Tetrahedron Letters, 29, p. 163, 1988 DOI: 10.1016/S0040-4039(00)80042-8

Flammability and Explosibility

Non flammable

References

[1] Mei-Fei Wang. “Separation and Identification of Relative Substances in Polyurethane Chain Extender Hydroquinone Bis(2-hydroxyethyl) Ether by High Performance Liquid Chromatography with Photodiode Array Detection and Electrospray Ionization Mass Spectrometry.” Industrial Engineering Chemistry Research 48 5 (2009): 2487–2492.
[2] Long Gu. “Synthesis and characterization of poly(butylene terephthalates) modified by hydroquinone bis(2-hydroxyethyl)ether.” Journal of Macromolecular Science, Part A 18 1 (2019): 871–876.

Hydroquinone bis(2-hydroxyethyl)ether(104-38-1)Related Product Information

• Benzene
• Hydroxyethyl starch
• Methyl 2-hydroxyethyl cellulose
• 1,4-Diacetoxybenzene
• Hydroxyethyl Cellulose
• 2-Methylhydroquinone
• 2-Methoxyethanol
• tert-Butylhydroquinone
• 2-Butoxyethanol
• 2-(METHYLSULFONYL)ETHANOL
• Hydroquinone
• 2-(2-Aminoethylamino)ethanol
• Ethylbenzene
• Methoxydiethylborane
• Dimethyl ether
• Sodium isethionate
• p-(2-Methoxyethyl) phenol
• CYCLOHEXYLDIETHANOLAMINE