Thallium sulfate

  • Bonide antzix
  • Ratox
  • Tharattin
Formula
T2SO4
Structure
Description
White, rhomboid prisms. Odorless.
Uses
As a rat poison former, as an ant bait former, and as a reagent in analytical chemistry.

Registry Numbers and Inventories.
CAS
10031-59-1
RTECS
XG6600000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector; Human Data
UN (DOT)
1707
Beilstein/Gmelin
13047 (G)
RCRA
P115
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
O4STl2
Formula mass
504.82
Melting point, °C
632
Density
6.77 g/cm3 (20 C)
Solubility in water
2.70 g/100 ml @ 0 C

Hazards and Protection.
Storage
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.
Handling
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.
Protection
Wear appropriate chemical protective gloves, boots, and goggles.
Respirators
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 face piece and is operated in 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.
Small spills/leaks
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.
Stability
Very

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. Material itself does not burn or burns with difficulty. Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Wear positive pressure self-contained breathing apparatus when fighting fires involving this material. Water, carbon dioxide, foam, dry chemical.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure limit(s)
IDHL: 15 mg/m3 (as Tl).
Exposure effects
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.
   Ingestion
Gastrointestinal symptoms may range from anorexia, salivation, diarrhea, and stomatitis, through severe paroxysmal abdominal pain, vomiting and hemorrhage.
   Inhalation
Death may be caused by respiratory paralysis, circulatory disturbances or pneumonia. Adult respiratory distress syndrome has been seen. Pulmonary edema has occurred from exposure to some thallium compounds.
   Skin
Diaphoresis, dry and scaly skin and eruptions may develop. Black pigmentation of the hair root becomes apparent within four days. Mee's lines appear after two to four weeks.
   Eyes
Hair loss may be seen in one to three weeks. Decreased visual acuity and color vision along 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.

First aid
 
   Ingestion
Do not induce emesis. Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour).
   Inhalation
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.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
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. Carefully observe all patients with eye exposure for the possible development of clinical signs and symptoms and follow treatment recommendations in the dermal exposure section where appropriate.

Transport.
UN number
1707
Response guide
Hazard class
6.1
Packing Group
II