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

Used in Polymer Stabilization:
Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite is used as a stabilizer in the polymer industry to prevent oxidative degradation and extend the service life of various plastics and rubber materials. Its antioxidant properties help to protect polymers from the harmful effects of heat, light, and oxygen, thereby maintaining their mechanical properties and appearance.
Used in Lubricant Additives:
In the lubricant industry, Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite is used as an additive to enhance the performance and longevity of lubricating oils. Its antioxidant properties help to prevent the formation of sludge, varnish, and other deposits that can lead to equipment failure and reduced efficiency. Additionally, it can help to reduce wear and tear on moving parts, thereby extending the life of machinery and reducing maintenance costs.
Used in Coatings and Inks:
Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite is also used in the coatings and inks industry as an additive to improve the durability and resistance of these products to environmental factors such as UV radiation, heat, and oxygen. Its antioxidant properties help to protect the coatings and inks from degradation, ensuring that they maintain their color, gloss, and integrity over time.
Used in Personal Care Products:
In the personal care industry, Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite is used as an ingredient in various products such as cosmetics, sunscreens, and hair care products. Its antioxidant properties help to protect the skin and hair from the damaging effects of free radicals, which can lead to premature aging, dryness, and other undesirable effects.
Overall, Tetrakis(2,4-di-tert-butylphenyl)-1,1-biphenyl-4,4'-diylbisphosphonite is a versatile phosphite antioxidant with a wide range of applications across various industries, where its ability to protect materials from oxidative degradation is highly valued.

Safety Profile

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

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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.

A new route to aryl-phosphonites and arylen-bis-phosphonites - stabilizers for plastics

Aryl-phosphonites and arylen-bis-phosphonites are synthesized by a new grignard route.These compounds are useful as stabilizers for plastics.