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| CAS No.: | 7789-27-7 |
|---|---|
| Name: | THALLIUM(I) FLUORIDE |
| Molecular Structure: | |
|
|
|
| Formula: | FTl |
| Molecular Weight: | 223.381 |
| Synonyms: | Thalliumfluoride; Thallium fluoride (Tl4F4); Thallium monofluoride; Thallous fluoride |
| Density: | 8.3g/mLat 25°C(lit.) |
| Melting Point: | 322oC(lit.) |
| Boiling Point: | 655 °C |
| Flash Point: | 655°C |
| Solubility: | Very soluble in water |
| Appearance: | white powder |
| Hazard Symbols: |
 T+, N
|
| Risk Codes: | R26/28; R33; R51/53 |
| Safety: | Poison by ingestion. When heated to decomposition it emits very toxic fumes of F− and Tl. See also THALLIUM COMPOUNDS and FLUORIDES. |
| PSA: | 0.00000 |
| LogP: | 0.42020 |
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Chemistry
IUPAC Name: Fluorothallium
The MF of Fluorothallium (CAS NO.7789-27-7) is FTl.
The MW of Fluorothallium (CAS NO.7789-27-7) is 223.38.
Synonyms of Fluorothallium (CAS NO.7789-27-7): Thallium fluoride ; Thallium monofluoride
Density: 8.3 g/mL at 25 °C
Boiling Point: 655 °C
Melting Point: 322 °C
Flash Point: 655 °C
Apperance: white powder
EINECS: 232-154-1
Merck 14,9262
Uses
Fluorothallium (CAS NO.7789-27-7) is used as chemical reagents, fine chemicals, pharmaceutical research and development.
Production
Thallium(I) fluoride can be prepared by the reaction of thallium(I) carbonate with hydrofluoric acid.
Toxicity Data With Reference
| 1. | orl-rat LDLo:50 mg/kg | NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. 5 (1953),28. |
Consensus Reports
Thallium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Safety Profile
Poison by ingestion. When heated to decomposition it emits very toxic fumes of F− and Tl. See also THALLIUM COMPOUNDS and FLUORIDES.Safety information of Fluorothallium (CAS NO.7789-27-7):
Hazard Codes 
T+,T,
N
Risk Statements
26/28 Very Toxic by inhalation and if swallowed
33 Danger of cumulative effects
51/53 Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements
13 Keep away from food, drink and animal feeding stuffs
28 After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer)
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
RIDADR UN 1707 6.1/PG 2
WGK Germany 3
RTECS XG4900000
Hazard Note Toxic
TSCA T
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) fluoride (or thallous fluoride or thallium monofluoride) is the chemical compound composed of thallium and fluorine with the formula TlF. It consists of hard white orthorhombic crystals which are slightly deliquescent in humid air but revert to the anhydrous form in dry air. It has a distorted sodium chloride (rock salt) crystal structure
Thallium(I) fluoride is unusual among the thallium(I) halides in that it is very soluble in water, while the others are not.