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N-Bromosuccinimide

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.

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Further Information

Names

IUPAC name1-Bromo-2,5-pyrrolidinedione

Other names

-bromosuccinimide; NBS

Identifiers

CAS Number: 128-08-5

JSmol: Interactive image

Beilstein Reference: 113916

ChEBI: CHEBI:53174

ChemSpider: 60528

ECHA InfoCard: 100.004.435

EC Number: 204-877-2

Gmelin Reference: 26634

PubChem: 67184

UNII: K8G1F2UCJF

Properties

Chemical formula: C4H4BrNO2

Molar mass: 177.99 g·mol

Appearance: White solid

Density: 2.098 g/cm (solid)

Melting point: 175 to 178 °C (347 to 352 °F; 448 to 451 K)

Boiling point: 339 °C (642 °F; 612 K)

Solubility in water: 14.7 g/L (25 °C)

Solubility: Insoluble (25 °C)

Hazards

hazards: Irritant

Safety data sheet: [1]

Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).