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BNX® 245

1 of 27 products in this brand
BNX 245 (36443-68-2)is a partially-hindered phenolic antioxidant that provides excellent processing and long term thermal stability in a wide range of plastics and other materials.

Functions: Antioxidant

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS), Polyamides, Polystyrenes (PS), Polyurethanes (PU), Polyvinyl Chloride (PVC)

Features: Good Thermal Stability, Low Volatility

End Uses: Bottles, Caps, Closures, Cosmetic Packaging, Cups, Rigid Films, Rigid Packaging

Synonyms: Ethylenebis(oxyethylene) bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate], Ethylenebis(oxyethylene)bis-(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate), Ethylenebis(oxyethylene)bis(3-tert-butyl-4-hydroxy-5-methylbenzenepropanoate), Triethylene glycol bis-[3-(3-t ert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis-[3-(3′-tert-butyl-4′-hydroxy-5′-methylphenyl)propionate], Triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, Triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], Triethylene glycol bis[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], Triethylene glycol bis[β-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], Triethylene glycol bis[β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionate]

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Name

Antioxidant 245

Plastics & Elastomers Functions

Antioxidant

CAS No.
36443-68-2
EC No.
253-039-2
Technologies

Elastomers,

Plastics

Product Families

Elastomers — Elastomer Additives

Antioxidants & Stabilizers

Plastics — Polymer Additives

Antioxidants & Stabilizers

Features & Benefits

Materials Features

Good Thermal Stability,

Low Volatility

Advantages
  • Provides excellent processing and long term thermal stability to plastics, especially when used in combination with phosphites and / or thioether antioxidants 
  • Partially hindered structure provides resistance to discoloration on exposure to combustion gasses (“gas fading”) 
  • Excellent compatibility with styrenic polymers, engineering plastics, polyurethanes, and PVC 
  • Low volatility

Applications & Uses

Markets

Automotive & Transportation,

Building & Construction,

Consumer Goods,

Electrical & Electronics,

Printing & Packaging

Applications

Automotive & Transportation — Other Automotive & Transportation Applications

Building & Construction — Other Building & Construction Applications

Consumer Goods — Other Consumer Goods Applications

Electrical & Electronics — Other Electrical & Electronics Applications

Printing & Packaging — Packaging

Food & Beverage Packaging,

Non-Food Consumer Packaging,

Other Packaging Materials

Compatible Polymers & Resins

Acrylonitrile Butadiene Styrene (ABS),

Polyamides,

Polystyrenes (PS),

Polyurethanes (PU),

Polyvinyl Chloride (PVC)

Plastics & Elastomers End Uses

Bottles,

Caps,

Closures,

Cosmetic Packaging,

Cups,

Rigid Films,

Rigid Packaging

Use Level
0.05 to 1%
Applications

BNX 245 is a highly effective antioxidant and process stabilizer in styrenic polymers (ABS, MBS, HIPS, and SB / SBR lattices), polyacetals, thermoplastic polyesters (especially PBT), polyamides, polyurethanes, PVC, other polymers, adhesives, and sealants. It is also useful as a chain terminator in PVC polymerizations.

Guidelines for Use

Recommended concentrations in plastics, adhesives, and sealants range from 0.05 to 1%. Combinations of BNX 245 with other antioxidants such as phosphites and thioethers often show synergistic performance. BNX 245 is also suitable for use in combination with light stabilizers, including hindered amine light stabilizers (HALS), UV absorbers, and benzoates. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use. Please contact Mayzo for specific recommendations.

Properties

Physical Form

Powder,

Solid

Typical Properties
ValueUnitsTest Method / Conditions
Melting Range76 - 79°C—
Molecular Weight586.8g/mol—

Regulatory & Compliance

Certifications & Compliance

FDA 21 CFR Regulations

FDA Regulations

BNX 245 is cleared under 21 CFR §178.2010 for use as an antioxidant and/or stabilizer in polymers used in the manufacture of articles or components for use in food contact applications, including polystyrene (including rubber-modified polystyrene), ABS, polyacetal (homopolymers and copolymers), rigid PVC, polyvinylidene chloride homo- and copolymers, and adhesives. Please contact your Mayzo representative for complete details, including restrictions of use.

Storage & Handling

Shelf Life
24 Months
Storage

This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.