5-Chloro-2-nitrodiphenylamine is an organic compound with the molecular formula C12H9ClN2O2 and CAS Registry Number of 25781-92-4. It has a molecular weight of 248.67 and is a white solid at room temperature. It is often used as a reference standard for various applications, such as in research, quality assurance, and in industrial production. It has varied uses, including for flame retardants and for nitrocellulose production. It can also be used as an intermediate in various chemical syntheses.


Chemical Name:




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Chemical Uses


5-Chloro-2-nitrodiphenylamine, or C12H9ClN2O2, is an organic compound with a molecular weight of 248.67 and a CAS Registry Number of 25781-92-4. At room temperature, it is a white solid. This compound is widely used as a reference standard for a variety of applications, including research, quality assurance, and industrial production.

Chemical Properties:

orange-red fine crystalline powder


In flame retardant materials, 5-Chloro-2-nitrodiphenylamine is an effective substitute for more hazardous halogenated hydrocarbons such as polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecanes (HBCDs). In the production of nitrocellulose, 5-Chloro-2-nitrodiphenylamine is used as a nitrating agent. Additionally, it can be used as an intermediate in chemical synthesis reactions. 

For research applications, 5-Chloro-2-nitrodiphenylamine can be used for chromatographic reference standards, for the synthesis of new molecules, and for the identification of unknown compounds. It is also used in microelectronics as a resistive material in the production of resistors and sensors. 

In the pharmaceutical industry, it is used as an intermediate in the synthesis of active pharmaceutical ingredients. In industrial production, 5-Chloro-2-nitrodiphenylamine is used in the synthesis of polyurethane foams, synthetic rubbers, and for the production of nitrocellulose. It is also used in the production of dyes and pigments, in the manufacture of explosives, and in the formulation of lacquers and varnishes.

Chemical Properties

Chemical name:


Cas No:


Molecular Formula:


Formula Weight:

248.67 g/mol



Melting point

110-114 °C

Boiling point

370.4±32.0 °C(Predicted)


1.5270 (estimate)

Refractive index




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