Antioxidants
REACH
4-nitrosodiphenylamine
CAS Number
156-10-5
EC Number
205-848-7
What is 4-nitrosodiphenylamine?
4-Nitrosodiphenylamine (CAS 156-10-5), also known as p-Nitrosodiphenylamine, is an aromatic amine compound used primarily as a stabilizer and antidegradant in polymer and rubber processing.
Where is 4-nitrosodiphenylamine used?
- Rubber compounding: prevulcanization inhibitor and antidegradant
- Tire manufacturing: tread and sidewall formulations
- Plastics processing: stabilizer for polymer intermediates and finished articles
- Synthesis of antioxidant and antiozonant additives
- It functions by inhibiting oxidative degradation, extending service life under heat and mechanical stress.
Commercial specifications
- Bulk quantities
- Packaging: bags to drums
Other Names (Synonyms)
4-Nitroso-N-phenyl-benzenamine|4-Nitroso-N-phenylaniline|p-Nitrosodiphenylamine|Naugard TKB|N-Phenyl-p-nitrosoaniline|Diphenylamine, 4-nitroso-|p-Nitrosodifenylamin|p-Nitroso-N-phenylaniline
What are the physical properties of 4-nitrosodiphenylamine?
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)
How is 4-nitrosodiphenylamine classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
Precautionary Statements
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P321 Specific treatment (see … on this label).
Which trade and regulatory codes apply to 4-nitrosodiphenylamine?
HS Code 29214200
WGK (Germany) 3