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Diphenylamine(DPA)
CAS NO.:122-39-4 Application: diphenylamine is mainly used to synthesize rubber antiager, dye, medicine intermediate, lubricating oil antioxidant, and powder stabilizer. Property: white crystal, becoming gray or brownish yellow once exposed to light, Specific gravity: 1.160 (20/20°) Boiling point:302°C, lightly dissolving in water, dissolving in ethanol, diethyl ether, benzene, dissolving in thick inorganic acid solution but separating if diluted by water Molecular formula: (C6H5)2NH Molecular weight:169.23 Structure formula:
Quality standard of product: Q/320621EAE01-2007
Item | Technical Index |
grade | 1st grade |
Appearance | White , Light yellow or brown Tablet or particle |
Diphenylamine,%≥ | 99.70 |
Low boiling point,%≤ | 0.3 |
High boiling point,%≤ | 0.2 |
Aniline,%≤ | 0.07 |
Freezing point,°C≥ | 52.60 |
Reaction of water extract substance | Neutral |
Moisture,%≤ | 0.2 |
Alcohol insoluble substance,%≤ | 0.05 |
diphenylamine