4-Nitrosodiphenylamine
CAS 156-10-5
EC 205-848-7
Formula C12H10N2O
MW 198.22 g/mol
Amines Rubber & TirePlastics & Polymers Antioxidant & Stabilizer
Description
4-Nitrosodiphenylamine (CAS 156-10-5, EC 205-848-7) is an aromatic amine compound commercially known under the trade name Naugard TKB. It is also referenced as p-Nitrosodiphenylamine and 4-nitroso-diphenylamine in technical and procurement documentation. No E-code designation applies to this substance.
In rubber and tire manufacturing, 4-nitrosodiphenylamine functions as a prevulcanization inhibitor and antioxidant, slowing premature crosslinking during compounding and extending processing safety margins. In plastics and polymer systems, it acts as a stabilizer by interrupting oxidative chain reactions, helping to preserve mechanical integrity during processing and service life.
This material is supplied as a solid and is registered under REACH (EC 205-848-7), which governs its handling and documentation requirements within the European market. Procurement teams should confirm supplier SDS compliance and applicable substance restrictions prior to ordering. HS code 29214200 applies for import and export classification purposes.
In rubber and tire manufacturing, 4-nitrosodiphenylamine functions as a prevulcanization inhibitor and antioxidant, slowing premature crosslinking during compounding and extending processing safety margins. In plastics and polymer systems, it acts as a stabilizer by interrupting oxidative chain reactions, helping to preserve mechanical integrity during processing and service life.
This material is supplied as a solid and is registered under REACH (EC 205-848-7), which governs its handling and documentation requirements within the European market. Procurement teams should confirm supplier SDS compliance and applicable substance restrictions prior to ordering. HS code 29214200 applies for import and export classification purposes.
Physical Properties
| Melting Point | 144-145 °C |
| Boiling Point | 292 °C |
| Density | 1.1447 (rough estimate) |
| Appearance | TKB is a black powder or a green plate-like material with a bluish luster. |
| Color | Green plates with bluish luster (from benzene) orsteel-blue prisms or plates (from ether + H2O) |
| Form | Solid |
| Refractive Index | 1.6330 (estimate) |
Safety & Handling (Learn More)
Warning GHS07
H
H302H315H319
P
P264P270P280P321P330P501P264+P265P301+P317P302+P352P332+P317P337+P317P362+P364P305+P351+P338
Trade & Regulatory
| HS Code | 29214200 |
| WGK (Germany) | 3 |
Other Names
4-nitroso-N-phenylaniline4-Nitroso-N-phenyl-benzenamineNaugard tkb4-Niinylaminep-Nitrosodiphenylamine4-nitroso-diphenylamin
Related Products
Raw Materials
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