What is hydrogen selenide used for?
Hydrogen Selenide is a colorless gas with an odor like decayed horseradish. It is used in the manufacture of organoselenium compounds and in semiconductors.
Is hydrogen selenide toxic?
Hydrogen selenide is hazardous, being the most toxic selenium compound and far more toxic than its congener hydrogen sulfide. It is suspected that this is due to the gas’ tendency to oxidise to form red selenium in mucous membranes; elemental selenium is less toxic than selenides are.
Is hydrogen selenide an acid?
Hydrogen selenide (H2Se) is a fairly strong acid with a pKa of 3.8 in aqueous systems. It is a colorless gas with an unpleasant odor.
What are the health hazards associated with phosgene?
Exposure to phosgene may cause irritation to the eyes, dry burning throat, vomiting, cough, foamy sputum, breathing difficulty, and chest pain; and when liquid: frostbite. Workers may be harmed from exposure to phosgene.
Is hydrogen sulfide a liquid?
Hydrogen sulfide appears as a colorless gas having a strong odor of rotten eggs. Boiling point -60.2°C. Shipped as a liquid confined under its own vapor pressure.
What is the chemical formula for hydrogen selenide?
H2Se
Hydrogen selenide/Formula
Is selenide toxic?
Hydrogen selenide is the most acutely toxic selenium compound. Acute (short-term) exposure to elemental selenium, hydrogen selenide, and selenium dioxide by inhalation results primarily in respiratory effects, such as irritation of the mucous membranes, pulmonary edema, severe bronchitis, and bronchial pneumonia.
How is phosgene removed from the body?
How people can protect themselves and what they should do if they are exposed to phosgene
- Leave the area where the phosgene was released and get to fresh air.
- If you think you may have been exposed, remove your clothing, rapidly wash your entire body with soap and water, and get medical care as quickly as possible.
Is phosgene a carcinogen?
EPA has classified phosgene as a Group D compound, not classifiable as to human carcinogenicity.