- Chromium monoselenide
Black, odorless powder.
Registry Numbers and Inventories.
R: 23/25 33 50/53
S: 20/21 28 45 60 61
Melting point, °C
Boiling point, °C
6.74 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Store under lock and key and with access restricted to technical experts or their assistants only.
Protective work clothing. Chemical protective gloves. Safety glasses or goggles.
Decomposition will not occur if used and stored according to specifications.
Use fire fighting measures that suit the surrounding fire. Wear self-contained respirator. Wear fully protective impervious suit.
Product is not flammable.
NIOSH PEL: 0.5 mg/m3 (as Cr); 0.2 mg/m3 (as Se)
Chromium powder, chromium (II) and chromium (III) compounds may cause nausea, diarrhea, vomiting, skin and eye irritation and pneumoconiosis. Although less likely than Cr(VI) compounds, the NTP considers all chromium to be potentially carcinogenic. Selenium may cause amyotrophic lateral sclerosis, bronchial irritation, gastrointestinal distress, vasopharyngeal irritation, garlic odor on breath and sweat, metallic taste, pallor, irritability, excessive fatigue, loss of fingernails and hair, pulmonary edema, anemia and weight loss.
Do not induce vomiting; immediately call for medical help. Seek immediate medical advice.
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
Rinse opened eye for several minutes under running water. Then consult a doctor.