- Thallous carbonate
- Dithallium carbonate
Heavy, shiny, colorless or white crystals.
Analysis (testing for carbon disulfide).
Registry Numbers and Inventories.
Mutagen; Reproductive Effector
Melting point, °C
Solubility in water
Heat of fusion
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 self-contained breathing apparatus when fighting fires with this material. Wear full protective clothing if contact with the material is anticipated; otherwise, boots, protective gloves, and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Ventilate area of spill. For small quantities, sweep onto paper or other suitable material, place in sealed container for disposal. Large quantities may be reclaimed. If this is not practical, collect in most convenient and safe manner and deposit in sealed containers. For liquids absorb in vermiculite, dry sand, earth or similar material and place in sealed containers for disposal.
Incompatible with strong oxidizing agents and strong acids.
May decompose on exposure to moist air or water. When heated to decomposition, emits toxic fumes of thallium.
(Non-Specific -- Thallium Salts, n.o.s.) Move container from fire area if you can do so without risk. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing.(Non-Specific -- Thallium Salts, n.o.s.) Extinguish with dry chemicals, carbon dioxide, water spray, fog, or foam.
Fire may produce irritating, corrosive and/or toxic gases.
NIOSH REL: TWA 0.1 mg/m3 [skin] OSHA PEL: TWA 0.1 mg/m3 [skin] IDLH 15 mg/m3 (as Tl)
Elevated blood pressure may be seen. Symptoms during the first days may include paresthesias, myalgias, peripheral burning sensation, headache, cranial nerve damage, convulsions, delirium, and coma. Peripheral neuropathy, severe pain, and muscle weakness with atrophy is also common. Ataxia, choreiform movements, dementia, depression, and psychosis may develop later in the course. Neurological damage is slow to resolve and may be permanent. Thallous carbonate was embryotoxic via the male in rats. Thallium crosses the placenta and concentrates in the testes.
Gastrointestinal symptoms may include anorexia, excessive salivation, diarrhea, stomatitis, paroxysmal abdominal pain, vomiting, and gi hemorrhage.
Death may be due to respiratory arrest or pneumonia. Adult respiratory distress syndrome (ards) has been seen.
Diaphoresis and dry scaly skin eruptions may develop. Black pigmentation of the hair root becomes apparent within four days. Alopecia (including the eyebrows) develops within one to three weeks. Mee's lines appear after two to four weeks.
Hair loss may be seen in one to three weeks. Decreased visual acuity and color vision, together with ophthalmoplegia and optic neuritis, are common. A bluish line may appear in the gums after three or four weeks, and dental caries are increased.
Do not induce emesis. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
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 and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Immediately flush with running water for at least 20 minutes.
USCG CHRIS Code