Hydantoin, 1,3-dibromo-5,5-dimethyl

  • Dibromantin
  • Dibromantine
  • N,N'-Dibromodimethylhydantoin
  • 1,3-Dibromo-5,5-dimethyl-2,4-imidazolidinedione
  • 2,4-Imidazolidinedione, 1,3-dibromo-5,5-dimethyl-
Formula
C5H6Br2N2O2
Structure
Description
White powder.

Registry Numbers and Inventories.
CAS
77-48-5
EC (EINECS/ELINCS)
201-030-9
EC Class
harmful, corrosive, sensitizing, dangerous for the environment
R 22 34 41
S 26 36/37/39 45
RTECS
MU0686000
RTECS class
Other
UN (DOT)
1479
Beilstein/Gmelin
146024
Beilstein Reference
5-24-05-00374
EPA OPP
6317
Swiss Giftliste 1
G-8264
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C5H6Br2N2O2
Formula mass
285.93
Melting point, °C
186 - 192
Boiling point, °C
368 - 376
Density
>1.00 g/cm3 (25 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C). Store protected from moisture.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Do not allow contact with water. Keep from contact with moist air and steam.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong reducing agents, strong bases, moisture.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen bromide, bromine.

Fire.
Flash Point,°C
155
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water with caution and in flooding amounts. Oxidizer. Greatly increases the burning rate of combustible materials. Containers may explode in the heat of a fire. Extinguishing media: Use water only! Do NOT use carbon dioxide or dry chemical. Do NOT use alcohol foams. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
These substances will accelerate burning when involved in a fire.
Hazards
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
1
 

Health.
Poison_Class
3
Exposure effects
   Ingestion
Harmful if swallowed.
   Inhalation
Inhalation of dust may cause respiratory tract irritation.
   Skin
Causes severe skin irritation.
   Eyes
Causes severe eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1479
Response guide
Hazard class
5.1
Packing Group
I; II; III
 
HS Code
2933 21 00