Diphenylamine DPA
Product Name:Diphenylamine (DPA)
CAS NO.:122-39-4
Linear Formula :C12H11N
Appearance : White crystalline powder with a burnt bone odor
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Description
The TNN Development Limited is one of the most reliable manufacturers and suppliers of diphenylamine dpa in China. Please feel free to wholesale customized diphenylamine dpa at low price from our factory. If you have any enquiry about free sample and discount information, please feel free to email us.
Description
COA
| Item | Standard | Result | ||||
| APPEARANCE | WHITE FLAKE | WHITE FLAKE | ||||
| DPA CONTENT% | ≥99.6 | 99.87 | ||||
| LOW BOILING POINT% | ≤0.3 | 0.03 | ||||
| HIGH BOILING POINT% | ≤0.3 | 0.03 | ||||
| ANILINE% | ≤0.10 | 0 | ||||
| FREEZING POINT℃ | ≥52.60 | 52.72 | ||||
| REACTION OF WATER EXTRACT SUBSTANCE |
NEUTRAL | NEUTRAL | ||||
| MOISTURE% | ≤0.20 | 0.07 | ||||
| ALCOHOL INSOLUBLE SUBSTANCE% |
≤0.05 | 0.01 | ||||
| ACIDITY(AS HCI) | ≤0.005 | 0.004 | ||||
| ALKALINITY(AS NaOH) | ≤0.005 | 0.004 | ||||
| Conclusion: | PRODUCT IS UP TO STANDARD | |||||
Application
Diphenylamine (DPA, CAS NO.: 122-39-4) is a classic aromatic amine compound. The synergistic effect of the double benzene ring and the amino group in its molecule enables it to continue to play the role of a "chemical bridge" in the field of material protection and molecular synthesis. In the rubber industry, the antioxidant mechanism of DPA can be called a "molecular guard" for free radical scavenging - it quickly captures peroxy radicals (ROO·) through the benzene ring conjugated system, and its chain termination efficiency is as high as 95%, which increases the elongation retention rate of styrene-butadiene rubber at break under 70°C thermal oxidation aging from 45% to 82%. This feature makes it a key additive for high-voltage cable sheaths of new energy vehicles.
In the field of pharmaceutical synthesis, the amino-activated bicyclic structure of DPA has become a "molecular building block" for building complex drugs. Through the Buchwald-Hartwig coupling reaction, it can efficiently introduce aromatic amine groups into the quinoline skeleton to form the key intermediate of the antimalarial drug chloroquine; in the synthesis of non-steroidal anti-inflammatory drugs, DPA is converted into 2-aminodiphenylamine via a nitration-reduction pathway, and further cyclized to form the indomethacin core structure, with the process yield optimized to 92%.
Packing And Delivery
Package:25kg Bag
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