Handbook for the Chemical Analysis of Plastic and Polymer Additives

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Lowinox ® TBM-6
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Handbook for the Chemical Analysis of Plastic and Polymer Additives
Brand Names & Manufacturers
Physical Properties
CAS Number 96-69-5
RTECS Number GP3150000
Abbreviation TBBC
S
Formula C22H30O2S Molecular Weight 358.54
Chemical Name
4,4'-thiobis(2-tert-butyl-5-methylphenol)
Synonyms
bis(3-tert-butyl-4-hydroxy-6-methylphenyl)sulfide; 4,4'-thiobis(6-tert-butyl-3-methylphenol); 1,1-thiobis(2methyl-4-hydroxy-5-tert-butylbenzene)
Cyanox ® 1760
Santonox ® TBMC
Rhodianox TBM6 (P/T/TP)
Appearance
Stability
Solubility
(g/100mL 20
Application, Regulatory & Environmental Information
° White to cream-colored crystalline powder; phenolic odor
Melting Point 160-164 °C
Boiling Point Decomposes at 300 °C
Stable under normal conditions of use.
Water MeOH EtOH Acetone CH2Cl2 Hexane
C) 0.08 79
47 20 U ~0.75
Application
TBBC is a hindered thiophenol antioxidant used in natural and synthetic rubbers with high thermo-oxidative degradation
resistance properties. It is a polymerization and processing 'light-stabilizer' in PP, ABS, PVC, EPDM, polybutadienes and in
HDPE / LDPE (for tubes, gas pipe connectors, high voltage cables, and films for food packaging applications). TBBC is
also a heat stabilizer for lubricants, an anti-skinning agent for hot melt adhesives, and an anti-scorching agent for polyurethanes.
Exhibits compatibility with peroxides and in tandem with carbon black.
Regulatory Information
FDA approved 1998 for the following applications: in the manufacture of antioxidants/stabilizers for polymers intended for
use in all stages of production, processing, packaging and transport of food: 21CFR part178.2010. UK approved 1992 as an
antioxidant for materials composed of PE and PP in contact with water or food intended for human consumption up to
0.25% of the final product composition.
Environmental Impact
Not readily biodegradable. TBBC lacks a hydrolyzable functional group, and therefore undergoes slow degradation. Toxic
to aquatic organisms. (LC50 96hr): 0.24 mg/L [bluegill sunfish]; (EC50 24hr): 0.23 mg/L [Daphnia Magna].
Point of Release
Can be released as point source pollution during manufacture. Additionally, it may be released from manufactured products
containing this material during the active life cycle of the products and/or upon disposal of the products.
Toxicological Data
Not listed (ACGIH, IARC, NTP, OSHA) as a cancer-causing agent. TBBC is not mutagenic with or without metabolic activation.
Acute intraperitoneal (LD50): 50 mg/kg [Mouse]; Acute oral (LD50) 2345 mg/kg [Rat], 4750 mg/kg [Mouse], 3200
mg/kg [Rabbit]; Acute dermal (LD50): >5010 mg/kg [Rabbit].
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Cytec Technology Corp.
Flexsys America L.P.
Rhone-Poulenc Chimie Corp.