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    Home > Catalyst and Auxiliary > Antioxidants > ANTIOXIDANT 168
    ANTIOXIDANT  168 structure

    ANTIOXIDANT 168

    • CAS No:

      31570-04-4

    • Formula:

      C42H63O3P

    • Synonyms:

      Tris-(2,4 -di-tert-butyl phenyl)phosphite

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    Basic Attributes

    • 31570-04-4

    • C42H63O3P

    • 646.92

    • 646.451477

    • 27.7

    • 15.5

    • 250-709-6

    • JKIJEFPNVSHHEI-UHFFFAOYSA-N

    • 3

    • 0

    • 0.57

    • 12

    Characteristics

    • white Powder

    • -0.98

    • 181-184 °C(lit.)

    • 360.963°C at 760 mmHg

    • 394.0±30.4 °C

    Safety Information

    • 2920901900

    • NONH for all modes of transport

    • P273, P280, P302+P352, P312, P322, P363, P501

    • H312

    Product Usage

    This product is a low volatile organic synthetic antioxidant and polymerization inhibitor, which is widely used in the synthesis and processing of various plastics such as polypropylene, polyethylene, ABS, polycarbonate fiber and polyester resin. An excellent phosphite antioxidant, white powder in appearance, easily soluble in organic solvents such as benzene, chloroform, cyclohexane, slightly soluble in ethanol, acetone, insoluble in polar solvents such as water and alcohol, slightly soluble In esters. Low toxicity, low volatility, high thermal stability, excellent hydrolysis resistance, and can effectively decompose hydroperoxides generated during thermal processing of polymeric materials. It has a good synergistic effect when used with hindered amine antioxidants 1010 and 1076, which can improve the stability of polymer materials during thermal processing. There are more than a dozen kinds of preparations compounded with phenolic antioxidants, which are widely used in polyolefins (such as polyethylene, polypropylene) and olefin copolymers, polyamides, polycarbonates, PS resins, PVC, engineering plastics, and rubber And petroleum products, ABS resin and other polymer materials. Compounds can also be used for adhesives

    Production Methods

    (1)First, 11.0 g of 2, 4-di-tert-butylphenol was added to a three-necked flask.a diatomaceous earth-supported pyridine catalyst of 22 mg and a mixed solution of methanol and toluene in 400 mL, and then added to the rotor, and a reflux condenser, The thermometer and the dropping funnel were fixed on a three-necked flask;(2)The three-necked flask containing the reactant in the step (1) was heated under an oil bath condition at a rate of 5 degrees Celsius per ten minutes.Raise the temperature to 40 ° C, Reacting solution;(3)To the reaction liquid of the step (2), 5.57 g of phosphorus trichloride dissolved in 30 mL of toluene was added dropwise to control the dropping rate.After 15 minutes of dropwise addition, continue to heat up to 95 ° C, The reaction was kept for 30 minutes, and the solvent was distilled off under reduced pressure.Recrystallization from n-hexane, That is, the product is obtained.The yield of the final product was 98.3percent.The purity was 98.9percent.(1)First, 11.0 g of 2, 4-di-tert-butylphenol was added to a three-necked flask.a diatomaceous earth-supported pyridine catalyst of 22 mg and a mixed solution of methanol and toluene in 400 mL, and then added to the rotor, and a reflux condenser, The thermometer and the dropping funnel were fixed on a three-necked flask;(2)The three-necked flask containing the reactant in the step (1) was heated under an oil bath condition at a rate of 5 degrees Celsius per ten minutes.Raise the temperature to 40 ° C, Reacting solution;(3)To the reaction liquid of the step (2), 5.57 g of phosphorus trichloride dissolved in 30 mL of toluene was added dropwise to control the dropping rate.After 15 minutes of dropwise addition, continue to heat up to 95 ° C, The reaction was kept for 30 minutes, and the solvent was distilled off under reduced pressure.Recrystallization from n-hexane, That is, the product is obtained.The yield of the final product was 98.3percent.The purity was 98.9percent.

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