The Bis(2,4,6-tri-ter-butyllphenyl)pentaerythritol-di-phosphite, with the CAS registry number 126505-35-9, has the systematic name of 3,9-bis(2,4,6-tri-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₄₁H₆₆O₆P₂.

The characteristics of Bis(2,4,6-tri-ter-butyllphenyl)pentaerythritol-di-phosphite are as followings: (1)ACD/LogP: 10.23; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 15; (4)ACD/LogD (pH 7.4): 15; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 10000000; (8)ACD/KOC (pH 7.4): 10000000; (9)#H bond acceptors: 6; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 10; (12)Polar Surface Area: 82.56 Å²; (13)Flash Point: 395.505 °C; (14)Enthalpy of Vaporization: 85.55 kJ/mol; (15)Boiling Point: 596.173 °C at 760 mmHg; (16)Vapour Pressure: 0 mmHg at 25°C.   

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O2P(Oc1c(cc(cc1C(C)(C)C)C(C)(C)C)C(C)(C)C)OCC3(C2)COP(OC3)Oc4c(cc(cc4C(C)(C)C)C(C)(C)C)C(C)(C)C
(2)InChI: InChI=1/C41H66O6P2/c1-35(2,3)27-19-29(37(7,8)9)33(30(20-27)38(10,11)12)46-48-42-23-41(24-43-48)25-44-49(45-26-41)47-34-31(39(13,14)15)21-28(36(4,5)6)22-32(34)40(16,17)18/h19-22H,23-26H2,1-18H3
(3)InChIKey: SHDUFLICMXOBPA-UHFFFAOYAQ