- Functions:Heat Stabilizer, Catalyst, Antioxidant, Stabilizer
- Reaction Type:Transesterification
- Labeling Claims:Non-Mutagenic, Non-Carcinogenic, Not Listed In California Proposition 65
- Synonyms:Antioxidant 1425, Calcium (3,5-di-tert-butyl-4-hydroxybenzyl monoethyl phosphonate), Calcium bis(ethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate), Calcium bis(monoethyl (3,5-di-tert-butyl-4-hydroxylbenzyl)phosphonate), Calcium bis[3,5-di(tert-butyl)-4-hydroxybenzyl(ethoxy)phosphinate], Calcium bis[ethyl (3,5-di-tert-butyl-4-hydroxyphenyl)methanephosphonate], Calcium bis[monoethyl (3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate], Calcium diethyl bis[[[3,5-(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate]
SperseStab™ 1425 is a high-molecular-weight phenolic antioxidant containing a phosphonate located para to the phenol. This orientation provides excellent color and low gas fading in a UV-stabilized antioxidant. The calcium salt acts as a soluble catalyst, especially for the esterification of rosin esters. Additionally, SperseStab™ 1425 works as a catalyst in the solid-state polymerization of PET polymers. Other applications include polyolefins, fibers, adhesives, and lubricating oils and greases.
