Dioctyl terephthalate( DOTP )
2022-10-31
Use: Dioctyl terephthalate (DOTP) compared with the currently commonly used dioctyl phthalate (DOP), it has the advantages of heat resistance, cold resistance, volatile resistance, extraction resistance, softness and good electrical insulation properties, etc., in the products show excellent durability, soap resistance and water resistance and low softness and softness. Because of its low volatility, the use of DOTP can fully meet the requirements of wire and cable temperature resistance grade, can be widely used in 70℃ cable material (IEC standard of International Electrotechnical Commission) and other PVC soft products. In addition to a large number of cable materials, PVC plasticizer, DOTP can also be used in the production of artificial leather film. In addition, the solubility is excellent, can also be used in acrylonitrile derivatives, polyvinyl butyraldehyde, nitrile rubber, cellulose nitrate and other plasticizers. Can also be used for synthetic rubber plasticizer, coating additive, precision instrument lubricant, lubricant additive, can also be used as paper softener.
Molecular formula ：C24H38O4
Molecular weight ： 390.56 DOTP is dioctyl terephthalate, it is a main plasticizer. It offers good cooling and heat resistance, it can be used as plasticizer of PVC abd PE cable, it can work with DOP in any ratio. It also can reduce viscosity and increase keeping life.
Quality index ：
| Index name | Excellent grade | First grade | Qualified | |
| Appearance | Transparent, no visible impurities oily liquid | |||
| Color number(APHA) | ≤ | 30 | 200 | yellow |
| Flash point (open cup) ℃ | ≥ | 210 | 205 | |
| Water content % | ≤ | 0.10 | 0.15 | |
| Acid number (To terephthalate) % | ≤ | 0.1 | 0.2 | 0.2 |
| Ester content % | ≥ | 99.5 | 99.0 | 99.0 |
| Volume resistivity (Ω·m) | ≥ | 2×1010 | 1×1010 | 0.5×109 |
| Density（20℃）g/ml | 0.981-0.986 | |||
