Primary Antioxidant - Phenolic Based
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2,2',6,6'-tetra-tert-butyl-4,4'-methylenediphenol.
Synonym: 4,4ʹ-methylenebis (2,6-di-tertiary-butylphenol);
Phenol, 4,4-methylenebis(2,6-bis(1,1-dimethylethyl)- |
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PowerNox™ 4426 has extreme low volatile. It is used for synthetic resin antioxidants due to its resisting thermal oxidation good stability.
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| Chemical Name: |
2,2',6,6'-tetra-tert-butyl-4,4'-methylenediphenol |
| CAS No.: |
118-82-1 |
| EINECS No.: |
204-279-1 |
| Formula: |
C29H44O2 |
| Molecular
Weight: |
425 |
| Melting Point(°C): |
154 |
| Relative Density[15°C, g/cm3]: |
0.88 |
| Flash point(°C): |
170 |
| Vapor Pressure[20°C, Pa]: |
<13 |
| Appearance: |
white powder |
| Ash (%): |
Max.0.2 |
| Solubility (20°C) |
% w/w |
| Isooctane: |
4 |
| Petroleum ether: |
8 |
| Ethanol: |
6 |
| 10% NaOH: |
<0.01 |
| Toluene: |
33 |
| Water: |
<0.01 |
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
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PowerNox™ 4426 is supplied in net weight 20kg plastic bag.
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