791750-27-1

Basic information

• Product Name: N-bromosulfamic acid
• Synonyms: N-bromosulfamic acid
• CAS NO: 791750-27-1
• Molecular Weight: 175.991
• Mol File: 791750-27-1.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: N-bromosulfamic acid(CAS DataBase Reference)
• NIST Chemistry Reference: N-bromosulfamic acid(791750-27-1)
• EPA Substance Registry System: N-bromosulfamic acid(791750-27-1)

Safety Data

• Hazardous Substances Data: 791750-27-1(Hazardous Substances Data)

Upstream product

• 87-90-1 trichloroisocyanuric acid 
• 5329-14-6 aminosulfonic acid 
• 7647-15-6 sodium bromide 
• 7726-95-6 bromine 
• 134509-56-1 N-bromosulfamic acid sodium salt 
• 10035-10-6 hydrogen bromide 

Relevant articles and documents

Methods of preparing highly concentrated aqueous bromine solutions

The present invention is directed to convenient methods of preparing: (1) highly concentrated liquid bromine-containing biocidal solutions and (2) highly concentrated mixed halogen liquid bromine and chlorine-containing biocidal solutions that have excellent physical and chemical stability. One method involves adding the acidic reaction medium to an alkaline source to effect the final pH adjustment and in another these are co-fed into a common reaction vessel. Both methods minimize the incidence of the acid hydrolysis reaction that undermines chemical yields and generates troublesome sulfate by-products. The methods offer superior reactor cooling efficiencies that reduce batch cycle times and suppress undesirable elevated temperature decomposition reactions.

Methods for the preparation of concentrated aqueous bromine solutions and high activity bromine-containing solids

The invention includes convenient methods of preparing: (1) highly concentrated liquid bromine-containing biocidal solutions, (2) highly concentrated mixed halogen liquid bromine and chlorine-containing biocidal solutions, and (3) high-activity bromine-containing biocidal solids, all having excellent physical and chemical stability. One method yields solutions that have concentrations of bromine in excess of 18% as Br2 (8% as Cl2) in which the mole ratio of hydroxide ion to hydrogen ion source is at least 1.9:1. Another method employs elemental bromine in conjunction with a solid organic or inorganic halogenating agent to yield halogen solutions at concentrations greater than 22.9% as Br2 (10.2% as Cl2). This method can be performed under conditions that exceed the solubility of the active ingredient such that it crystallizes and is recovered as a hydrated or anhydrous salt in good yield.