QHA-TEP (TEP)

QHA-TEP (TEP)

QHA-TEP (TEP) is a high-purity triethyl phosphate, chemical name Triethyl Phosphate.
Product Details

QHA-TEP (TEP) Product Datasheet

1. Description

QHA-TEP (TEP) is a high-purity triethyl phosphate, chemical name Triethyl Phosphate, CAS No. 78-40-0. It is a colorless, transparent, low-viscosity liquid with mild odor, excellent stability, good solubility and plasticizing property. It acts as an efficient flame retardant, plasticizer, solvent and chelating agent, with low volatility, good electrical insulation and environmental compatibility, widely used in plastics, coatings, textiles, electrical materials and polymer processing.

2. Specification

ItemStandard ValueTest Method
AppearanceColorless clear liquidVisual Inspection
Color (APHA)≤20Platinum-Cobalt Colorimetry
Purity (wt%)≥99.5Gas Chromatography
Specific Gravity (20℃)1.068–1.072Density Meter
Acidity (mgKOH/g)≤0.05Titration
Moisture (wt%)≤0.10Karl Fischer
Flash Point (℃)≥115Closed Cup
Refractive Index (25℃)1.403–1.405Refractometer

3. Application

  • Flame Retardant: Used in polyurethane, cellulose acetate, epoxy resin and phenolic resin to improve flame retardant performance.
  • Plasticizer & Processing Aid: Enhance flexibility and processability of plastics, resins and rubber materials.
  • Coatings & Inks: Used as leveling agent, solvent and dispersant to improve film smoothness and adhesion.
  • Textile Finishing: Provide antistatic and flame retardant effects for fibers and fabrics.
  • Electronic Materials: Applied in capacitors, insulating materials and polymer electrolytes with good insulation.

4. Storage

  • Store in cool, dry and ventilated place, away from heat, fire, direct sunlight and strong oxidants.
  • Keep containers tightly sealed to prevent moisture absorption and volatilization.
  • Recommended storage temperature: 5–35℃.
  • Shelf life: 24 months under proper sealed storage.
  • Handle in accordance with chemical safety regulations; avoid contact with skin and eyes.


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