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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 
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