Selenourea

  • Carbamimidoselenoic acid
  • 2-Selenourea
  • Selenouronium
Formula
CH4N2Se
Structure
Description
Prisms or needles from water.
Uses
Medication.

Registry Numbers and Inventories.
CAS
630-10-4
EC (EINECS/ELINCS)
211-129-9
RTECS
YU1820000
RTECS class
Other
UN (DOT)
3283
Beilstein/Gmelin
1734744
Beilstein Reference
4-03-00-00435
RCRA
P103
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
CH4N2Se
Formula mass
123.03
Melting point, °C
235
Density
2.065 g/cm3 (25 C)
Solubility in water
very soluble

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability
No data.
Incompatibilities
Strong oxidizing agents, acids, chromium trioxide, potassium bromate.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, selenium/selenium oxides.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
IDHL: 1 mg
Exposure effects
Chronic inhalation may cause effects similar to those of acute inhalation. Chronic ingestion may cause effects similar to those of acute ingestion.
   Ingestion
May be fatal if swallowed. Poison by ingestion. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May cause kidney, liver and spleen damage. May cause loss of nails and hair. May cause tetanic and clonic spasms
   Inhalation
May cause respiratory tract irritation. May cause effects similar to those described for ingestion.
   Skin
Causes skin irritation.
   Eyes
Causes 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
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Immediately 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.

Transport.
UN number
3283
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
SEU