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| CAS No.: | 6533-73-9 |
|---|---|
| Name: | THALLIUM(I) CARBONATE |
| Molecular Structure: | |
|
|
|
| Formula: | CH2 O3 . 2 Tl |
| Molecular Weight: | 468.75 |
| Synonyms: | Carbonicacid, dithallium(1+) salt (8CI,9CI); Thallium carbonate (6CI,7CI); Dithalliumcarbonate; Thallium carbonate (Tl2CO3); Thallium(1+) carbonate; Thallouscarbonate |
| EINECS: |
229-434-0 EU number: 081-002-00-9 |
| Density: | 7.11g/mLat 25°C(lit.) |
| Melting Point: | 272 C |
| Solubility: | soluble |
| Appearance: | colourless crystals or white powder |
| Hazard Symbols: | As for thallium. |
| Risk Codes: | R26/28; R33; R51/53 |
| Safety: | Poison by ingestion, skin contact, and subcutaneous routes. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of Tl. See also THALLIUM COMPOUNDS. |
| PSA: | 35.53000 |
| LogP: | 0.06820 |
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Chemistry
Product Name: Thallium(I) carbonate (2:1)
Synonyms of Thallium(I) carbonate (2:1) (CAS NO.6533-73-9) : Carbonic acid, dithallium(1+) salt (8CI,9CI) ; Thallium carbonate (6CI,7CI) ; Dithallium carbonate ; Thallium carbonate (Tl2CO3) ; Thallium(1+) carbonate ; Thallous carbonate
CAS NO:6533-73-9
Molecular Formula:CH2O3.2 Tl
Molecular Weight :470.7755
Molecular Structure :.png)
EINECS: 249-868-4
Flash Point: 169.8 °C
Enthalpy of Vaporization: 63.37 kJ/mol
Boiling Point: 333.6 °C at 760 mmHg
Vapour Pressure: 2.58E-05 mmHg at 25°C
Melting Point: 260-270 °C (dec.)(lit.)
Density 7.11 g/mL at 25 °C(lit.)
Stability: Stable. Incompatible with oxidizing agents, acids.
Appearance: colourless crystals or white powder.
Uses
Thallium(I) carbonate (2:1) (CAS NO.6533-73-9) is used in the manufacture of imitation diamonds.Thallium(I) carbonate (2:1) (CAS NO.6533-73-9) is also used in analysis to test for carbon disulfide and as a fungicide.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | oral | 21mg/kg (21mg/kg) | Hygiene and Sanitation Vol. 29(2), Pg. 26, 1964. | |
| mouse | LD50 | subcutaneous | 27mg/kg (27mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. Vol. 2, Pg. 94, 1961. |
| rat | LD50 | oral | 21800ug/kg (21.8mg/kg) | Weisheng Dulixue Zazhi. Journal of Health Toxicology. Vol. 4, Pg. 21, 1990. | |
| rat | LD50 | skin | 117mg/kg (117mg/kg) | SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 24(4), Pg. 54, 1980. |
| rat | LDLo | subcutaneous | 18mg/kg (18mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. Vol. 2, Pg. 94, 1961. |
Consensus Reports
Thallium and its compounds are on the Community Right-To-Know List. EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory.
Safety Profile
Poison by ingestion, skin contact, and subcutaneous routes. Experimental reproductive effects. Mutation data reported. When Thallium(I) carbonate (2:1) (CAS NO.6533-73-9) is heated to decomposition, it emits toxic fumes of Tl. See also THALLIUM COMPOUNDS.
Hazard Codes 
T+
N
Risk Statements 26/28-33-51/53
R26/28:Very toxic by inhalation and if swallowed.
R33:Danger of cumulative effects.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 13-28-45-61
S13:Keep away from food, drink and animal foodstuffs.
S28:After contact with skin, wash immediately with plenty of soap-suds.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR UN 1707 6.1/PG 2
WGK Germany 3
RTECS XG4000000
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
Thallium(I) carbonate (2:1), which Registry Number is 6533-73-9 ,has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.
Thallium is a digestive tract irritant and nervous system toxicant. It is classified as extremely toxic. Probable oral lethal dose (humans) is 5-50 mg/kg, or between 7 drops and 1 teaspoon for 70 kg person (150 lb.). Teratogenic effects are noted after chronic intoxication.
When heated to decomposition,Thallium(I) carbonate (2:1) emits toxic fumes of thallium. (Non-Specific -- Thallium Salts, n.o.s.) Fire may produce irritating or poisonous gases.