38613-77-3

Basic information

• Product Name: Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite
• Synonyms: Einecs 254-037-4;Irgafos p-epqff;Phos 2;Phosphonous acid, p,p'-((1,1'-biphenyl)-4,4'-diyl)bis-, p,p,p',p'-tetrakis(2,4-bis(1,1-dimethylethyl)phenyl) ester;Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite;Pentaerythritol-diphosphoric acid-bis(2,4-bis-tert-butyl-phenyl)Ester;ANTIOXIDANT-626;Phosphonous acid, 1,1-biphenyl-4,4-diylbis-, tetrakis2,4-bis(1,1-dimethylethyl)phenyl ester
• CAS NO: 38613-77-3
• Molecular Formula: C₆₈H₉₂O₄P₂
• Molecular Weight: 672.723382
• EINECS: 254-037-4
• Product Categories: Organics
• Mol File: 38613-77-3.mol
• Article Data: 2

Chemical Properties

• Melting Point: 75-95°C
• Boiling Point: 854.2 °C at 760 mmHg
• Flash Point: 597.4 °C
• Appearance: /
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Solubility: Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
• CAS DataBase Reference: Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite(CAS DataBase Reference)
• NIST Chemistry Reference: Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite(38613-77-3)
• EPA Substance Registry System: Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite(38613-77-3)

Safety Data

• Hazardous Substances Data: 38613-77-3(Hazardous Substances Data)

Usage

Uses

Tetrakis(2,4-di-tert-butylphenyl)[1,1''-biphenyl]-4,4''-diylbisphosphonite is a phosphite antioxidant.

Safety Profile

Low toxicity by ingestion. Experimental reproductive effects. When heated to decomposition it emits toxic vapors of POx.

Upstream product

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Relevant articles and documents

A phosphite antioxidant preparation method

The invention discloses a method for preparing a phosphite antioxidant. The method comprises the following steps: 1) preparing an organo-magnesium compound solution, namely adding magnesium chips to a reactor, introducing protective atmosphere into the reactor, adding an iodine substance until the reactor is full of iodine vapor, dropwise adding a 4,4-dibromobiphenyl solution to the reactor, heating and refluxing, dropwise adding an organic solvent to the reaction system to clarify after dropwise adding, reacting for 2-6 hours under a reflux state and cooling; 2) dropwise adding the organo-magnesium compound solution to the bi(2,4-di-tert-butylphenyl) chlorophosphite solution at -15 to 20 DEG C, carrying out heat preservation at -10 to 50 DEG C for 1-5 hours after dropwise adding, filtering, washing, merging filtrate and filtering to obtain magnesium salt solid and filtrate, removing the solvent in the filtrate, so as to obtain wet white powder, then recrystallizing by using isopropanol, and drying the powder. The method is mild in process, simple and convenient to operate, high in catalyst selectivity, high in product yield, green and environment-friendly, and the solvent used in reaction can be recovered.