Description

(1,2-Dioxoethylene)bis(iminoethylene) bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) (CAS No. 70331-94-1) is a high-purity, sterically hindered phenolic antioxidant with the molecular formula C₄₀H₆₀N₂O₈. This compound features a unique oxamido-bridged structure with dual 3,5-di-tert-butyl-4-hydroxyphenylpropionate moieties, providing exceptional radical scavenging capabilities. With a molecular weight of 696.91 g/mol, this light-stable additive is particularly effective in polymer stabilization applications. The tert-butyl groups provide excellent steric protection for the reactive phenolic hydroxyl, while the flexible propionate linkages allow for compatibility with various matrices. This technical grade material is supplied as a fine white to off-white powder with typical purity >98% (HPLC), making it suitable for demanding research and industrial applications where oxidative degradation must be controlled.

Properties

• CAS Number: 70331-94-1
• Complexity: 990
• IUPAC Name: 2-[[2-[2-[3-(3,5-ditert-butyl-4-hydroxy-phenyl)propanoyloxy]ethylamino]-2-oxo-acetyl]amino]ethyl 3-(3,5-ditert-butyl-4-hydroxy-phenyl)propanoate
• InChI: InChI=1S/C40H60N2O8/c1-37(2,3)27-21-25(22-28(33(27)45)38(4,5)6)13-15-31(43)49-19-17-41-35(47)36(48)42-18-20-50-32(44)16-14-26-23-29(39(7,8)9)34(46)30(24-26)40(10,11)12/h21-24,45-46H,13-20H2,1-12H3,(H,41,47)(H,42,48)
• InChI Key: OXWDLAHVJDUQJM-UHFFFAOYSA-N
• Exact Mass: 696.43496688
• Molecular Formula: C40H60N2O8
• Molecular Weight: 696.9
• SMILES: CC(C)(C)C1=CC(=CC(=C1O)C(C)(C)C)CCC(=O)OCCNC(=O)C(=O)NCCOC(=O)CCC2=CC(=C(C(=C2)C(C)(C)C)O)C(C)(C)C
• Topological: 151
• Monoisotopic Mass: 696.43496688
• Physical Description: Dry Powder
• Synonyms: (1,2-Dioxoethylene)bis(iminoethylene) bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, (1,2-dioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl) ester, 2,2′-Oxamidobis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], (1,2-dioxoethylene)bis(iminoethylene) bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2,2′-OXAMIDOBIS(ETHYL 3-(3,5-DI-TERT-BUTYL-4-HYDROXYPHENYL)PROPIONATE), Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 1,1′-((1,2-dioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl)) ester, Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 1,1′-[(1,2-dioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl)] ester, 274-572-7, 70331-94-1, (Oxalylbis(azanediyl))bis(ethane-2,1-diyl) bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate), Naugard XL-1, Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-,(1,2-dioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl) ester, Antioxidant, 2-[[2-[2-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]ethylamino]-2-oxoacetyl]amino]ethyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate, ANTIOXIDANT MD-697, C40H60N2O8, Antioxidant 697, [Oxalylbis(azanediyl)]bis(ethane-2,1-diyl) Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate], EINECS 274-572-7, MFCD01940880, SCHEMBL39210, DTXSID1052450, MSK3126, OXWDLAHVJDUQJM-UHFFFAOYSA-N, AKOS016009490, DS-5473, (Oxalylbis(azanediyl))bis(ethane-2,1-diyl)bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate), CS-0154928, NS00019748, O0526, D78315, 2,2′-Oxamidodiethyl bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], (1,2-dioxoethylene)bis(iminoethylene) bis(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate), (Oxalylbis(azanediyl))bis(ethane-2 pound not1-diyl) bis(3-(3 pound not5-di-tert-butyl-4-hydroxyphenyl)propanoate)

Application

This multifunctional antioxidant is primarily employed as a stabilizer in polyolefins, elastomers, and other polymeric systems susceptible to thermal and oxidative degradation. The compound’s bifunctional structure provides synergistic stabilization by combining radical scavenging and peroxide decomposing activities. It finds particular utility in high-temperature processing applications for polyethylene and polypropylene, where it helps maintain molecular weight and mechanical properties. Researchers also utilize this antioxidant in studies of polymer aging mechanisms and stabilization kinetics.

Safety and Hazards

GHS Hazard Statements

• H412 (34.9%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
• H413 (18.6%): May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P273, and P501

Hazard Classes and Categories

• Aquatic Chronic 3 (34.9%)
• Aquatic Chronic 4 (18.6%)

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