4-Nitrosodiphenylamine
4-Nitrosodiphenylamine (CAS: 156-10-5), with the molecular formula C6H5NHC6H4NO and a molecular weight of 198.22 g/mol, is an organic nitroso compound. This substance serves as a valuable building block in chemical synthesis. Its primary applications lie in organic chemistry research and the development of new chemical entities. It is offered by Tech Serve Solutions for laboratory and industrial applications.

Chemical Synthesis Intermediate
4-Nitrosodiphenylamine is utilised as a key intermediate in the synthesis of more complex organic molecules. Its reactive nitroso group allows for various transformations in multi-step synthetic pathways.
Research and Development
This compound is employed in research laboratories for exploring novel chemical reactions and developing new materials. It serves as a starting material or reagent in diverse R&D projects.
Organic Building Block
As an organic building block, it provides a structural motif for constructing specialised chemical compounds. Its diphenylamine and nitroso functionalities are useful in creating diverse molecular architectures.
| Molecular weight | 198.22 |
|---|---|
| Linear formula | C6H5NHC6H4NO |
| Assay | 75% |
| Contains / stabiliser | water as balance |
| Melting point | 144 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/38 |
| Safety statements (S) | 26-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Nitrosodiphenylamine used for?
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4-Nitrosodiphenylamine is primarily used as an intermediate in chemical synthesis and as a building block in organic chemistry research and development.
What are the CAS number and molecular formula for 4-Nitrosodiphenylamine?
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The CAS number for 4-Nitrosodiphenylamine is 156-10-5, and its molecular formula is C6H5NHC6H4NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Nitrosodiphenylamine with an assay of 75%, containing water as balance. We do not represent this product as USP, BP, or EP grade.
How should 4-Nitrosodiphenylamine be handled safely?
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Handle 4-Nitrosodiphenylamine with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. It is classified as harmful if swallowed, causes skin irritation, and causes serious eye irritation (H302, H315, H319).
How is 4-Nitrosodiphenylamine packed and exported?
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4-Nitrosodiphenylamine is packed according to regulatory standards for safe transport and can be exported globally by Tech Serve Solutions. It is classified under UN 3077, Class 9, Packing Group III.
How can I request a quote or sample for 4-Nitrosodiphenylamine?
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To request a quote or sample for 4-Nitrosodiphenylamine, please contact the Tech Serve Solutions sales team through our website or by phone.
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