SODIUM HYPOBROMITE Chemical Properties

storage temp. 

0-6°C

CAS DataBase Reference

13824-96-9

EPA Substance Registry System

Hypobromous acid, sodium salt (13824-96-9)

Safety Information

RIDADR 

1479

HazardClass 

5.1

PackingGroup 

II

SODIUM HYPOBROMITE Usage And Synthesis

Uses

Sodium hypobromite is an inorganic salt compound, which can be used as an intermediate in the synthesis of medicine and chemical industry.

Preparation

Sodium hypobromite can be prepared by the following methods:dissolve part of sodium hydroxide in water, cool it to below 10°C, add bromine to react, and keep the temperature below 10°C.

Chemical Properties

Formula weight (NaBrO) 118.91. Yellow crystals, readily soluble in H2O. May be stored at —20°C in a closed weighing vessel for a few days with only slight loss of NaBrO; decomposition, with formation of NaBr and NaBrO3, begins immediately at 0°C and is complete within two days. Analysis after drying for one or two hours on clay at 0°C; about 92% NaBrO·5H2O, 2% NaBr·2H2O, 1% NaBrO3, 5% moisture.

Synthesis

A 40% sodium hydroxide solution (438 g., 306 ml.) is stirred and cooled to —3°C in a wide-neck, round-bottom flask closed with a three-hole rubber stopper (for a stirrer, dropping funnel and thermometer). Bromine (314 g., 100 ml., 90% of the quantitj theoretically needed for 175 g. of NaOH) is slowly added (1-2 drops per second) with constant stirring. The temperature of the reaction mixture is held between —8 and —3°C. Insufficient cooling results in the formation of NaBrO3; cooling below —8°C should be avoided to prevent slow solidification of the flask contents.
Br2 + 2 NaOH + 4 H2O = NaBrO ? 5 H2O + NaBr

SODIUM HYPOBROMITE(13824-96-9)Related Product Information

• Sodium hypochlorite
• Thionyl chloride
• Sodium iodate
• Sodium bromide
• Sodium bromate
• SODIUM HYPOBROMITE
• Sodium bromite