PowerNox™ 4426 CAS No. 118-82-1

2,2',6,6'-tetra-tert-butyl-4,4'-methyl , enediphenol

Synonym: 4,4ʹ-methylenebis (2,6-di-tertiary-butylphenol) Phenol, 4,4-
methylenebis(2,6-bis(1,1-dimethylethyl)-

PowerNox™ 4426 has extreme low volatile. It is used for synthetic resin
antioxidants due to its resisting thermal oxidation good stability.

Technical Data of PowerNox™ 4426 CAS 118 82 1
Synonyms Albemarle - Ethanox 4702/4710
CAS Number 118-82-1
EINECS Number 204-279-1
Chemical Structure
Chemical Formula C29H44O2
Molecular Weight 425
Packing PowerNox™ 4426 is supplied in net weight 20kg plastic bag.
Note All information in the leaflet is based on our present knowledge and
experience. We reserve the right to make any changes according to
technological progress or further developments. Performance of the product
described herein should be verified by testing.

We specifically disclaim any other express or implied warranty of fitness
for a particular purpose or merchantability.

We disclaim liability for any incidental or consequential damages.
Benefits & Applications of PowerNox™ 4426 CAS No. 118 82 1
PowerNox™ 4426 is premier multi-ring phenolic antioxidant for engine oil and
industrial lubricants. It is a highly effective additive for suppressing the
formation of acidic and insoluble products of oil oxidation.

PowerNox™ 4426 also has advantages as below:

- High hindered phenolic antioxidant activity

- Low volatility ensures optimum lubricant performance at high temperatures

- Inhibits deposit and sludge formation in the 1000-hour TOST and the CMA
thermal stability test

- Synergistic with zinc dithiophosphates and alkylated diphenylamines

- Nonreactive with copper, iron, lead, and silver

- Reduces total deposits in the TEOST MHT-4

Physical Properties of PowerNox™ 4426 CAS No. 118-82-1
Appearance White Powder
Relative Density [15°C, g/cm3] 0.88
Melting Point [°C] 154
Flash Point [°C] 170
Vapor Pressure [20°C, Pa] <13
Ash (%) Max.0.2
Solubility of PowerNox™ 4426 CAS No. 118-82-1
Solubility [20°C] % w/w
Isooctane 4
Petroleum ether 8
Ethanol 6
Toluene 33
Water <0.01
10% NaOH <0.01

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