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| CAS No.: | 7446-18-6 |
|---|---|
| Name: | Thallium(I) sulfate |
| Molecular Structure: | |
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| Formula: | H2O4 S . 2 Tl |
| Molecular Weight: | 504.80 |
| Synonyms: | Sulfuricacid, dithallium(1+) salt (8CI,9CI);Thallium sulfate (Tl2(SO4)) (6CI);C.F.S.;CSF-Giftweizen;Dithallium sulfate;Dithallium(1+) sulfate;Dithallium(I)sulfate;M 7-Giftkoerner;Rattengiftkonserve;Thallium sulfate;Thallium(I)sulfate;Thallous sulfate;Zelio; |
| EINECS: | 231-201-3 |
| Density: | 6.77g/mLat 25°C(lit.) |
| Melting Point: | 632°C(lit.) |
| Appearance: | white fine crystalline powder or needles |
| Hazard Symbols: | As for thallium. |
| Risk Codes: | R28;R38;R48/25;R51/53; |
| Safety: | 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 Tl and SOx. Used as a rat poison, ant bait, and a reagent in analytical chemistry. See also THALLIUM COMPOUNDS and SULFATES. |
| PSA: | 88.64000 |
| LogP: | -0.25720 |
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Chemistry
IUPAC Name: Thallium(1+) sulfate
Synonyms: C.F.S. ; CSF-Giftweizen ; Dithallium(1+) sulfate ; Eccothal;M 7-Giftkoerner ; M7-giftkoerner
Product Categories: Inorganics;RodenticidesAlphabetic;Alpha sort;Pesticides;Pesticides&Metabolites;Q-ZPesticides&Metabolites;TF - TO;Metal and Ceramic Science;Salts;Thallium Salts;Catalysis and Inorganic Chemistry;Chemical Synthesis;Thallium
CAS: 7446-18-6
Molecular Formula:O4STl2
Molecular Weight:504.83
Molecular Struture: 
EINECS: 231-201-3
Mol File: 7446-18-6.mol
Enthalpy of Vaporization: 62.94 kJ/mol
Boiling Point: 330 °C at 760 mmHg
Vapour Pressure: 3.35E-05 mmHg at 25°C
Melting point: 632 °C(lit.)
Density : 6.77 g/mL at 25 °C(lit.)
Storage temp: Poison room
Merck : 14,9269
Appearance: Thallium(i) sulfate (2:1) is white fine crystalline powder or needles
Uses
Thallium(i) sulfate (2:1) is used as a rodenticide and chemical reagents.
Production
Thallium(i) sulfate (2:1) can be derived from heating of metal thallium and sulfuric acid .
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LDLo | oral | 37mg/kg (37mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 48, Pg. 478, 1933. | |
| cat | LDLo | oral | 40mg/kg (40mg/kg) | Yakkyoku. Pharmacy. Vol. 28, Pg. 329, 1977. | |
| dog | LDLo | oral | 16mg/kg (16mg/kg) | Yakkyoku. Pharmacy. Vol. 28, Pg. 329, 1977. | |
| duck | LDLo | oral | 74mg/kg (74mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 48, Pg. 478, 1933. | |
| human | LDLo | oral | 2166ug/kg (2.166mg/kg) | Yakkyoku. Pharmacy. Vol. 28, Pg. 329, 1977. | |
| man | LDLo | oral | 3mg/kg (3mg/kg) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: ATAXIA BEHAVIORAL: IRRITABILITY | "Metal Toxicity in Mammals, Vol. 2: Chemical Toxicity of Metals and Metalloids," Venugopal, B., and T.D. Luckey, New York, Plenum Press, 1978Vol. 2, Pg. 101, 1978. |
| man | LDLo | oral | 14mg/kg (14mg/kg) | PERIPHERAL NERVE AND SENSATION: STRUCTURAL CHANGE IN NERVE OR SHEATH BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) CARDIAC: CHANGE IN RATE | Journal of Toxicological Sciences. Vol. 3, Pg. 325, 1978. |
| man | TDLo | oral | 7ug/kg (0.007mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Clinical Toxicology. Vol. 17, Pg. 133, 1980. |
| mouse | LD50 | oral | 23500ug/kg (23.5mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 29(2), Pg. 23, 1964. | |
| mouse | LD50 | subcutaneous | 26600ug/kg (26.6mg/kg) | Medycyna Pracy. Industrial Medicine. Vol. 30, Pg. 257, 1979. | |
| pig | LDLo | oral | 2mg/kg (2mg/kg) | Yakkyoku. Pharmacy. Vol. 28, Pg. 329, 1977. | |
| quail | LDLo | oral | 29640ug/kg (29.64mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 48, Pg. 478, 1933. | |
| rabbit | LD50 | unreported | 25mg/kg (25mg/kg) | "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A390, Pg. 1983, | |
| rabbit | LDLo | intravenous | 25mg/kg (25mg/kg) | Technical Bulletin - United States Department of Agriculture, Washington, D.C.).Vol. 238, Pg. 1, 1931. | |
| rat | LD50 | oral | 16mg/kg (16mg/kg) | Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 22, Pg. 291, 1980. | |
| rat | LD50 | skin | 550mg/kg (550mg/kg) | BEHAVIORAL: ATAXIA LUNGS, THORAX, OR RESPIRATION: DYSPNEA SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Nippon Noyaku Gakkaishi. Journal of the Pesticide Science Society of Japan. Vol. 18, Pg. S209, 1993. |
| rat | LD50 | unreported | 15mg/kg (15mg/kg) | Yakkyoku. Pharmacy. Vol. 30, Pg. 397, 1979. | |
| rat | LDLo | subcutaneous | 13mg/kg (13mg/kg) | Acta Pharmacologica et Toxicologica. Vol. 12, Pg. 260, 1956. | |
| women | TDLo | oral | 175mg/kg (175mg/kg) | PERIPHERAL NERVE AND SENSATION: PARESTHESIS KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Journal of Toxicology, Clinical Toxicology. Vol. 35, Pg. 97, 1997. |
Consensus Reports
EPA Extremely Hazardous Substances List. Thallium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes T+.gif){kind=small}
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Risk Statements 28-38-48/25-51/53
28: Very Toxic if swallowed
38: Thallium(i) sulfate (2:1) is irritating to the skin
48/25: Toxic: danger of serious damage to health by prolonged exposure if swallowed
48/25: Toxic: danger of serious damage to health by prolonged exposure if swallowed
Safety Statements 13-36/37-45-61
13: Keep away from food, drink and animal feeding stuffs
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
61: Avoid release to the environment. Refer to special instructions safety data sheet
36/37: Wear suitable protective clothing and gloves
RIDADR UN 1707 6.1/PG 2
WGK Germany 2
RTECS XG6800000
HazardClass 6.1
PackingGroup II
Standards and Recommendations
OSHA PEL: TWA 0.1 mg(Tl)/m3 (skin)
ACGIH TLV: TWA 0.1 mg(Tl)/m3 (skin)
Specification
1.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.
2.Air & Water: Reactions Soluble in water.
3.Reactivity Profile : Thallium(i) sulfate has weak oxidizing and weak reducing powers. Redox reactions can however still occur.
4.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(i) sulfate. Chronic exposure causes hair loss starting 10 days after exposure and complete baldness in about a month.
5.Fire Hazard :When heated to decomposition, Thallium(i) sulfate (2:1) emits very toxic fumes of thallium and sulfur oxide.