Non-colour or light yellow liquid, mrlting point less than -24ºC, soluble in toluene, heptane, ethyl acetate and other organic solvents but insoluble in water. DTDTP is a liquid secondry stebilizer and antioxidant and have excellent compatibility with resin. DTDTP is use for polymers and has a good synthesize effect in combination with phenolic antioxidant. Np toxicity (Oral rat LD50>10g/kg). The dosage is 0.05-.05%.