221075-90-7 30947-30-9 53320-85-7 EINECS 250-401-1 Irgastab 2002 Irgastab 2002 HT Nickel(2+) diethyl bis(((3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methyl)phosphonate) Phosphonic acid, ((3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methyl)-, monoethyl ester, nickel(2+) salt (2:1)