N-Bromosuccinimide or NBS is a chemical reagent used in radical substitution, electrophilic addition, and electrophilic substitution reactions in organic chemistry. NBS can be a convenient source of Br, the bromine radical.

| Appearance | Off White to light yellow powder |
| Assay | NLT 98% |
| Melting Point | Between 176° C to 182°C |
| Loss on Drying (w/w)(@ 800C under vacuum for 3 hrs.) | NMT 1.0 % |
| Solubility | Sparingly soluble in methanol, Soluble in Acetone, Glacial Acetic Acid & Alkali Hydroxide |
Drums