Zibo Wanke Chemical Antioxidant B-551

Identification & Functionality

Chemical Name

4,4′-Thiobis(2-tert-butyl-5-methylphenol)

CASE Ingredients Functions

Antioxidant,

Stabilizer

CAS No.

96-69-5

EC No.

202-525-2

Technologies

CASE Ingredients

Product Families

CASE Ingredients — Additives

Functional Additives,

Rheology Modifiers & Stabilizers

Features & Benefits

CASE Ingredients Features

Heat Resistance,

Low Volatility

Applications & Uses

Markets

Adhesives & Sealants

Applications

Adhesives & Sealants — Other Adhesives & Sealants Applications

Compatible Polymers & Resins

Natural Rubbers (NR),

Synthetic Rubbers

Usage

• Antioxidant B551 is powerful antioxidant for use in applications requiring heat resistance. It is suitable for the protection of white and light-colored NR and synthetic rubber compounds, including latex formulations and adhesives, because of its low volatility,
• It has significant advantage over more highly volatile antioxidants such as BHT and quinines. B551 provides excellent protection against degradation catalyzed by heavy metals. Additional uses of B551 include stabilization of NBR elastomers, ABS and polyolefins such  as PE,PP,EPM,EPDM.
• It is regulated for use in articles in contact with food

Properties

Physical Form

Powder,

Solid

Appearance

White Crystalline Powder

Physical Properties

	Value	Units	Test Method / Conditions
Volatility	max. 0.5	%	—
CI	max. 0.3	%	—

Regulatory & Compliance

Certifications & Compliance

ISO 14001,

ISO 9001,

REACH (Europe)

Packaging & Availability

Packaging Type

Bags

Packaging

Packing in 20kg PE bag and 25dags per pallet.

Storage & Handling

Storage

To be stored in cool and ventilated warehouse, avoid direct exposure to sunlight.