1,3-dibromo-5,5-dimethyl-hydantoin, CAS No. 77-48-5

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77-48-5

Catalog No. EBD6453

CAS 77-48-5

Name 1,3-dibromo-5,5-dimethyl-hydantoin

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Basic Information

Synonyms: 1,3-Dibromo-5,5-dimethylhydantoin 1,3-Dibromo-5,5-dimethyl-2,4-imidazolidinedione DDH 1,3-Dibromo-5,5-dimethyldantoin Bromodan Dibromantin DBDMH 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione Dibromo-5,5-dimethylhydantoin 5,5-dimethyl-1,3-dibromohydantoin 1,3-dibromo-5,5-dimethyl-hydantoin dbnpa

Molecular Formula: C5H6Br2N2O2

Molecular Weight: 285.92

MDL Number: MFCD00003189

Categories: Synthetic Chemistry > Basic Synthetic Reagents > Halogenation Reagents Synthetic Chemistry > Organic Building Blocks > Halogenated Compounds Functional Chemicals > Consumer & Industrial Chemicals > Water Treatment Chemicals

Product Description:

1,3-Dibromo-5,5-dimethylhydantoin (DBDMH, CAS 77-48-5) is a white to off-white crystalline solid with a bromine-like odor. It is a brominating and oxidizing agent, characterized by its two labile bromine atoms attached to the hydantoin ring, which are readily released in solution. Its primary application is as a stable and efficient source of positive bromine (Br_) for bromination reactions in organic synthesis, including the bromination of alkenes, alkynes, and aromatic compounds. Additionally, DBDMH is widely used as a disinfectant, sanitizer, and algicide in industrial water treatment, swimming pools, and cooling towers, where it slowly releases hypobromous acid to control microbial growth. It also serves as a bleaching agent and a mildewcide in various industrial formulations. DBDMH is preferred over liquid bromine due to its solid form, ease of handling, and safer storage profile. It is typically stable under normal conditions but should be kept away from strong reducing agents and combustible materials to prevent hazardous reactions.

Physical Properties

Melting Point: 197-199 °C (dec.)(lit.)

Boiling Point: 250.2 °C at 760 mmHg

Flash Point: 155 °C

Density: 2.183 g/cm3

Storage: 0-6°C

Safety Information

Packing Level: II

Hazard Category: 6.1(5.1)

Transport Codes: 3087

Analytical Data

Appearance: white powder