| Identification | More | [Name]
THALLIUM(I) SULFATE | [CAS]
7446-18-6 | [Synonyms]
Dithallium sulfate
THALLIUM(+1)SULFATE
THALLIUM(I) SULFATE
THALLIUM (OUS) SULFATE
THALLIUM SULFATE
THALLIUM SULFATE (OUS)
THALLIUM SULPHATE
THALLOUS SULFATE
THALLOUS SULPHATE
C.F.S.
cfs
CSF-Giftweizen
Dithallium(1+) sulfate
dithallium(1+)sulfate
Eccothal
M 7-Giftkoerner
m7-giftkoerner
Rattengiftkonserve
Rcra waste number P115
Sulfuric acid thallium(1+) salt (1:2) | [EINECS(EC#)]
231-201-3 | [Molecular Formula]
O4STl2 | [MDL Number]
MFCD00011278 | [Molecular Weight]
504.83 | [MOL File]
7446-18-6.mol |
| Chemical Properties | Back Directory | [Appearance]
white fine crystalline powder or needles | [Melting point ]
632 °C(lit.)
| [Boiling point ]
decomposes [STR93] | [density ]
6.77 g/mL at 25 °C(lit.)
| [refractive index ]
1.860 | [storage temp. ]
Poison room | [solubility ]
Water (Slightly) | [form ]
Crystals or Powder | [color ]
White to off-white | [Specific Gravity]
6.77 | [Water Solubility ]
Solubility in water increases with temperatureSoluble in water. | [Merck ]
14,9269 | [CAS DataBase Reference]
7446-18-6(CAS DataBase Reference) | [EPA Substance Registry System]
Thallium(I) sulfate (7446-18-6) |
| Hazard Information | Back Directory | [Chemical Properties]
white fine crystalline powder or needles | [Uses]
As rat poison, as ant bait and as a reagent in analytical chemistry. | [General Description]
Odorless white rhomboid prisms or a dense white powder. Density 6.77 g/cm3. Melting point 1170°F (632°C). Extremely toxic by ingestion. Very toxic by skin absorption and ingestion. A slow acting cumulative poison. Used as a rat poison, and an ant bait. Also used for analysis (testing for iodine in the presence of chlorine) and ozonometry. Not registered as a pesticide in the U.S. | [Reactivity Profile]
THALLIUM SULFATE(7446-18-6) has weak oxidizing and weak reducing powers. Redox reactions can however still occur. | [Air & Water Reactions]
Soluble in water. | [Health Hazard]
Rated as extremely toxic. The probable oral lethal dose in humans is 5 to 50 mg/kg, or between 7 drops and 1 teaspoon for a 150-pound person. The mean lethal dose in an adult is probably about 1 gm of thallium sulfate. Chronic exposure causes hair loss starting 10 days after exposure and complete baldness in about a month. | [Fire Hazard]
When heated to decomposition, THALLIUM SULFATE emits very toxic fumes of thallium and sulfur oxide. | [Definition]
ChEBI: Thallium sulfate is a metal sulfate in which the counterion is thallium and the ratio of thallium to sulfate is 2:1. It is a rodenticide used to control rats, squirrels, mice, moles, prairie dogs, ants and cockroaches. It is no longer registered for pesticide use in the United States. It has a role as a rodenticide and an insecticide. It is a thallium molecular entity and a metal sulfate. It contains a thallium(1+) and a sulfate. | [Production Methods]
Commercial sources are flue dusts, either from pyrite (FeS2)
burners or from lead and zinc smelters and refiners, as a byproduct
of cadmium production at the rate of a few thousand
pounds per year. In the flue dusts thallium occurs largely as a
sulfate, which is extracted with hot water or dilute sulfuric
acid. The purification of thallium is accomplished by taking
advantage of the difference in solubility of certain thallium
compounds and the impurities. Traces of zinc, copper,
cadmium, lead, and indium are removed by dissolving
the thallium in and precipitating the impurities with hydrogen
sulfide. | [Purification Methods]
The sulfate crystallises from hot water (7mL/g) by cooling; then dry it under vacuum over P2O5. It is POISONOUS. | [Carcinogenicity]
Thallium is not classifiable with
respect to carcinogenicity due to a lack of relevant human and
animal studies. Several subchronic and chronic animal studies
on thallium and compounds are available; however, they
were not designed to examine carcinogenic end points. |
| Safety Data | Back Directory | [Hazard Codes ]
T+,N | [Risk Statements ]
R28:Very Toxic if swallowed.
R38:Irritating to the skin.
R48/25:Toxic: danger of serious damage to health by prolonged exposure if swallowed .
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S13:Keep away from food, drink and animal feeding stuffs .
S36/37:Wear suitable protective clothing and gloves .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet . | [RIDADR ]
UN 1707 6.1/PG 2
| [WGK Germany ]
2
| [RTECS ]
XG6800000
| [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
II | [HS Code ]
28332980 | [Safety Profile]
Human poison by ingestion. Experimental poison by ingestion and subcutaneous routes. Human systemic effects by ingestion: ataxia, change in heart rate, excitement, eye changes, irritability, nausea or vomiting, nerve or sheath structural changes, somnolence, wakefulness. Experimental reproductive effects. When heated to decomposition it emits very toxic fumes of T1 and SOx. Used as a rat poison, ant bait, and a reagent in analytical chemistry. See also THALLIUM COMPOUNDS and SULFATES. | [Hazardous Substances Data]
7446-18-6(Hazardous Substances Data) | [Toxicity]
LD50 orally in rats: 25 mg/kg, E. W. Schafer, Toxicol. Appl. Pharmacol. 21, 315 (1972) |
|