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Hydroquinone bis(2-hydroxyethyl) ether

CAS Number
104-38-1
EC Number
203-197-3
Chemical Formula
C10H14O4
Molecular Weight
198.22 g/mol

Description

Hydroquinone bis(2-hydroxyethyl) ether (CAS 104-38-1 ), commonly known as HQEE, is a difunctional diol used as a chain extender and reactive intermediate in polymer systems. It is also recognized commercially as 1,4-Bis(2-hydroxyethoxy)benzene. Its aromatic diol structure makes it a preferred building block for producing rigid, high-performance polyurethane and polyester materials. HQEE is primarily used as a chain extender in cast polyurethane elastomers. In these applications, it improves hardness, load-bearing capacity, and thermal resistance in finished parts such as industrial wheels, rollers, and mining screens. It is essential for heavy-duty industrial components. In printing and packaging, it contributes to the formulation of high-durability inks and coatings where chemical resistance is a key performance requirement. This ensures longevity in harsh environments. Formulators in the personal care sector incorporate it into film-forming systems and specialty polymer bases. It also functions as a reactive diol in polyester synthesis for various industrial resins. Its aromatic backbone raises the glass transition temperature of the final resin, enhancing structural integrity. HQEE is supplied as a white to off-white solid, typically in flake or granular form. It is available in technical and polymer grades, with purity specifications commonly at 99% or higher. Packaging options generally include bags and drums suited to industrial-scale procurement needs. Contact us for supply of Hydroquinone bis(2-hydroxyethyl) ether Request Quote

Other Names (Synonyms)

1,4-Bis(2-hydroxyethoxy)benzene | Vernatzer 30/10 | 2,2'-(p-Phenylenedioxy)diethanol | 2,2'-(Phenylenedioxy)diethanol | Hydroquinone diethylol ether | Hydroquinone di(2-hydroxyethyl) ether | Ethanol, 2,2′-[1,4-phenylenebis(oxy)]bis- | Ethanol, 2,2′-(p-phenylenedioxy)di- | HQEE

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point105-106 °C
Boiling Point185-200 °C (0.3 mmHg)
Density1.0143 (rough estimate)
Appearancewhite to off-white crystalline powder or flakes
ColorWhite to off-white
Odorodorless
FormCrystalline Powder or Flakes
Water Solubilitypractically insoluble
Vapor Pressure0.45Pa at 45℃
Refractive Index1.4720 (estimate)
Log P0.41 at 30℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29094990
Storage Class11 - Combustible Solids
WGK (Germany)1