Q-1300 is a nitrosamine inhibitor which powerfully inhibits polymerizations even with very small dosages. It can be effectively used for purifications and for storage of highly reactive monomers.

Chemical Name

Ammonium N-nitorosophenylhydroxlamine) 2,2'-Azobis(N-butyl-2-methylpropionamide

CAS No.: 135-20-6
Molecular weight: 155.16

Physical characteristics

Appearance White to slightly yellowish brown crystalline powder
Melting/freezing point 140-144° C
Solubility Soluble  in water and methanol
Slightly soluble in N,N-dimethylformamide


Main Applications

  • Polymerization reaction inhibitor for thermal and radical polymerization, distillation, popcorn polymer formation


  • EINECS No.: 205-183-2
  • REACH: n/a


Store under 10°C. Protect against heat. Only packaging which is approved (e.g. acc. to ADR) may be used.

Safety information

Acute Toxicity
Serious Health Hazard

For specific information on the safe handling of the product, please refer to the material safety data sheet (MSDS) which is available on request.