Diethyl 3,5-Di-tert-butyl-4-hydroxybenzylphosphonate , >98.0%(HPLC) , 976-56-7

CAS NO.：976-56-7

Empirical Formula: C19H33O4P

Molecular Weight: 356.44

MDL number: MFCD00227871

EINECS: 213-551-9

PRODUCT Properties

• Melting point: 122 °C
• Boiling point: 417.0±33.0 °C(Predicted)
• Density: 1.046±0.06 g/cm3(Predicted)
• solubility: soluble in Methanol
• form: powder to crystal
• pka: 12.04±0.40(Predicted)
• color: White to Almost white
• Water Solubility: 14mg/L at 20℃
• InChI: InChI=1S/C19H33O4P/c1-9-22-24(21,23-10-2)13-14-11-15(18(3,4)5)17(20)16(12-14)19(6,7)8/h11-12,20H,9-10,13H2,1-8H3
• InChIKey: GJDRKHHGPHLVNI-UHFFFAOYSA-N
• SMILES: P(CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1)(=O)(OCC)OCC
• LogP: 2.9 at 23℃
• CAS DataBase Reference: 976-56-7(CAS DataBase Reference)
• EPA Substance Registry System: Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]-, diethyl ester (976-56-7)

Description and Uses

Diethyl 3,5-di-tert-butyl-4-hydroxybenzyl phosphate is a phosphorus-containing hindered phenolic antioxidant with excellent extraction resistance. It is particularly suitable for preventing aging in polyesters. It is generally added before polycondensation because it acts as a catalyst for polyester polycondensation. It can also be used as a light stabilizer in polyamides and has antioxidant properties. It has a synergistic effect when used with UV absorbers. The usual dosage is 0.3-1.0 parts. This product can also be used as a stabilizer for dimethyl terephthalate during storage and transportation. It has low toxicity. The oral LD50 in mice is >5000 mg/kg.

Safety

• Hazard Codes: Xi
• TSCA: TSCA listed
• HS Code: 2920.90.2000
• REACH Registrations: Active