
Product names: Naugard 445 , Nocrac CD
Chemical name: 4.4'-Bis(α.α-dimethylbenzyl)diphenylamine or: p-'-diisopropylphenyldiphenylamine
Chemical Structural Formula:

Physical and chemical properties:
1.Appearance: white crystals ;
2.2. Density: 1.14;
3. Melting point of pure products: 101 °C;
4. Thermal decomposition temperature: 280°C;
5. Solubility: antioxidant 405 is easily soluble in rubber and various organic solvents, slightly soluble in water and alcohol
6 . Volatile: high molecular weight and low volatility , oil resistance, high temperature resistance .
7. Molecular weight: 405.58 CAS number: 10081-67-1
Toxicity test:
1. Oral LD50>5000mg/kg in rats;
2. No reaction to skin contact (rabbit);
3. No response to eye contact (rabbit).
Scope of application:
Antioxidant 405 is one of the few non-toxic, odorless, light-colored antioxidant varieties in amine Antioxidant . It is widely used in anti-thermal oxygen oxidation at high temperature, and exhibits excellent performance in high-temperature processing of polymers, and shows strong synergistic effects with phenolic and phosphite Antioxidant , which is the best choice for anti-thermal oxidation antioxidant formulations. It is especially effective in protecting against aging caused by high heat, light, such as neoprene rubber, acrylate rubber, nitrile rubber, EPDM rubber, natural rubber, polyether polyol, etc.
In the production of polyether polyols, the use of antioxidant 405 can greatly increase the oxidation induction temperature of the system, prevent the core burning phenomenon at high temperature of the product and reduce the yellowing phenomenon of the product.
Precautions for use:
Although antioxidant 405 is a non-polluting antioxidant, it will be slightly discolored under the conditions of sun exposure and long-term exposure to air, but it will not migrate. When storing, it should be shading, sealed, moisture-proof, sunscreen, rainproof, and stored in a cool and dry place.
Packing: 25Kg paper-plastic composite bag or cardboard drum, lined with black plastic bag.
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