1,3-Dibromo-5,5-dimethylhydantoin manufacturers and suppliers

1,3-Dibromo-5,5-dimethylhydantoin suppliers

Properties

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

Boiling point:: 250.2±23.0 °C(Predicted)

Density: 1.00 g/cm3 (25℃)

refractive index: 1.6220 (estimate)

Flash point:: 155 °C

storage temp.: Store below +30°C.

solubility: 1g/l

form: Powder

pka: -3.44±0.40(Predicted)

color: Cream or light yellow

Water Solubility: Soluble in Alcohol, Ether, Benzene. Insoluble in Water.

Sensitive: Moisture Sensitive

Decomposition: 197-199 ºC

Merck: 14,3017

BRN: 146024

Safety Information

Symbol(GHS): GHS03,GHS05,GHS06,GHS09

Signal word: Danger

Hazard statements: H272-H301-H314-H317-H400

Precautionary statements: P210-P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338

Hazard Codes: O,C,N,Xi

Risk Statements: 8-22-35-50/53-50-34

Safety Statements: 17-26-36/37/39-45-60-61

RIDADR: UN 3087 5.1/PG 2

WGK Germany: 3

RTECS: MU0686000

Hazard Note: Harmful/Irritant

TSCA: Yes

HazardClass: 5.1

PackingGroup: II

HS Code: 29332100

Use

Adding an appropriate amount of water to dimethyl hydantoin, control the temperature at about 30 ℃ for stirring of 30min until all the dimethyl hydantoin is dissolved. Add drop wise of appropriate amount of bromine within a certain period of time and then have reaction for several hours. After the completion of the reaction, cool the solution, crystallize using ethanol, filter, and dry with the light-yellow solid being finished product of DBDMH. The optimal condition for experimentally determination and synthesis of DBDMH is: the optimum molar ratio of DMH to bromine is 1: 2.0; the solvent amount is 80 mL (water) /0.1mol (Hein); the reaction temperature should be about 30 ℃; Reaction time is around 5min with the yield of 1,3-dibromo-5,5-dimethylhydantoin being up to 80%.

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