- Methyl selenac
- Selenium, tetrakis(dimethyldithiocarbamate)
Yellow powder or crystals.
Registry Numbers and Inventories.
Melting point, °C
1.58 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate clothing to prevent any reasonable probability of skin contact. Wear eye protection to prevent any possibility of eye contact.
Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive pressure-mode. Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive-pressure mode.
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Avoid contact with acids, strong oxidizers, chromium trioxide, potassium bromate, cadmium. Selenium
Use method most appropriate to fight surrounding fire.
Fire may produce irritating, corrosive and/or toxic gases.
IDHL: 1 mg/m3 (as Se)
Dizziness, decreased reflexes, CNS depression, and coma have been reported.
Gastrointestinal effects are generally the first symptoms seen. Acute effects may include: vomiting, hypersalivation, diarrhea, abdominal pain, a burning sensation in the nostrils and/or oral mucosa, chemical burns of the alimentary tract and a garlic-like odor on the breath.
Pulmonary edema and cardiopulmonary arrest are possible.
Dermatitis and nasal irritation may be present.
Administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Besides supportive treatment, there is no specific treatment for this rare type of human poisoning. Ascorbic acid and edta are of no or equivocal use, and bromobenzene may be dangerous.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.
I; II; III
USCG CHRIS Code