Dioctyl terephthalate

Product Details

CasNo： 6422-86-2

MF： C24H38O4

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99.5%

• Basic Information
  • Chemical Formula: C??H??O?
  • CAS Number: 6422 - 86 - 2
  • English Name: Dioctyl Terephthalate
  • Appearance: Colorless oily liquid
  • Water - solubility: Insoluble in water
• Physical and Chemical Properties
  • Density (20℃): Approximately 0.984 g/cm³
  • Refractive Index: 1.1687
  • Boiling Point (0.8 kPa): 400℃
  • Freezing Point: - 48℃
  • Viscosity (25℃): 63×10³ Pa·s
  • Volume Resistivity (20℃): 4.6×10¹¹ Ω·cm
  • Flash Point (Open - cup): 210℃
  • Acid Value: 0.09 mgKOH/g
• Product Characteristics
  • Good Heat and Cold Resistance: It has good heat - resistance and can meet the temperature - resistance requirements of wire and cable. It can be used in the production of 70℃ - resistant cable materials. At the same time, due to its linear molecular structure, it also has good cold - resistance.
  • Excellent Electrical Insulation Performance: Its volume resistivity is 10 - 20 times higher than that of Dioctyl Phthalate (DOP). It can replace DOP in PVC plastic wire sheaths and is an ideal plasticizer for producing high - insulation products.
  • Low Volatility: It is not easy to volatilize, showing excellent durability in products, which can reduce the migration and loss of plasticizers and prolong the service life of products.
  • Strong Extraction Resistance: It has good extraction resistance and is not easy to be extracted by water or other solvents. Even in an environment in contact with water or solvents, it can maintain the stability of product performance.
  • Good Environmental Performance: It does not contain phthalates and is not within the range of 16 phthalate - containing plasticizers restricted by the European Union and other countries. It is an excellent environmentally - friendly plasticizer and can be used in food - contact materials and medical devices.
• Production Process: Usually, terephthalic acid reacts with isooctanol under the action of a catalyst such as titanium or antimony to form bis(2 - ethylhexyl) terephthalate (DEHT). Then, DEHT reacts with isooctanol under the action of a catalyst such as zinc or calcium through transesterification. Finally, DOTP is obtained through purification processes such as distillation, filtration and washing.
• Product Specifications: The hue (APHA) is no more than 30, the acid value is no more than 0.05 KOH - mg/g, the ester content is not less than 99.5%, and the water content is not more than 0.05%.
• Packaging and Storage: It is usually packaged in 200KG iron drums, ton - barrels, liquid bags or tank cars. It should be stored in a cool, dry and well - ventilated area below 40℃, away from direct sunlight, incompatible substances, heat sources and fire sources.
• Application Fields: It is widely used in PVC soft products, such as wire and cable, artificial leather film, etc. It can also be used as a plasticizer for acrylonitrile derivatives, nitrile rubber, cellulose nitrate, etc., as well as a coating additive, precision instrument lubricant, paper softener, etc.