Antioxidant 1222 Molecular formula: C19H33O4P CAS NO：976-56-7 Chemical name: 3,5-di-tert-butyl-4-hydroxybenzyl diethyl phosphonic acid ester

Features and Applications/Product Characteristics

Antioxidant 1222 is a phosphorus containing hindered phenolic antioxidant that serves as both a primary and secondary antioxidant, as well as a light stabilizer. It has the characteristics of high temperature resistance, extraction resistance, low volatility, low migration, good thermal stability, and high antioxidant efficiency, and is suitable for PET PBT、DMT、PA， Especially suitable for polyester polycondensation catalysts. Improve the stability of polyester solution, suppress color and viscosity changes. Does not affect the condensation rate and does not react with the catalyst. The general dosage is 0.1-0.5%.

Appearance: White to slightly yellow crystalline powder

Molecular weight: 356.4

Content ≥ 99.0%

Melting point ≥ 122 ℃

Flash point: 206oC

Density: 1.08g/cm3

Ash content ≤ 0.1%

Volatile matter ≤ 0.5%

Packaging specifications: 25kg cardboard box, paper bag

Suitable for: Polyester polycondensation catalyst. Improve the stability of polyester solution, suppress viscosity changes, prevent color discoloration, do not affect the condensation rate, and do not react with catalysts. Combined with UV absorbers, the synergistic effect is significant. The general dosage is 0.1-1.0%.