1,4-Bis(2-hydroxyethoxy)benzene , >95.0%(GC) , 104-38-1

Synonym(s):
2,2′-(1,4-Phenylenedioxy)diethanol

CAS NO.：104-38-1

Empirical Formula: C10H14O4

Molecular Weight: 198.22

MDL number: MFCD00002861

EINECS: 203-197-3

PRODUCT 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)

Description and Uses

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].

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

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319
• Precautionary statements: P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313
• Safety Statements: 24/25
• WGK Germany: 1
• Autoignition Temperature: 874 °F
• TSCA: Yes
• HS Code: 29094990