A5252812
Lithium fluoride , AR,99% , 7789-24-4
Synonym(s):
Fluorolithium;Lithium fluoride
CAS NO.：7789-24-4
Empirical Formula: FLi
Molecular Weight: 25.94
MDL number: MFCD00011090
EINECS: 232-152-0
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 845 °C (lit.) |
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| Boiling point: | 1681 °C |
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| Density | 2.64 g/mL at 25 °C (lit.) |
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| vapor pressure | 0Pa at 25℃ |
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| refractive index | 1.3915 |
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| Flash point: | 1680°C |
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| storage temp. | Store at +5°C to +30°C. |
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| solubility | Soluble in 0.29 g/100 mL (20°C) and hydrogen fluoride. Insoluble in alcohol. |
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| form | random crystals |
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| color | White to off-white |
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| Specific Gravity | 2.635 |
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| PH | 6.0-8.5 (25℃, 0.01M in H2O) |
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| Water Solubility | 0.29 g/100 mL (20 ºC) |
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| Sensitive | Hygroscopic |
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| λmax | λ: 260 nm Amax: ≤0.01 λ: 280 nm Amax: ≤0.01 |
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| Crystal Structure | NaCl type |
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| crystal system | Cube |
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| Merck | 14,5531 |
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| Solubility Product Constant (Ksp) | pKsp: 2.74 |
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| Space group | Fm3m |
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| Lattice constant |
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| Exposure limits | ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
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| Stability: | Stable, but hygroscopic. Hydrolyzes in the presence of water to form hydrofluoric acid, which attacks glass - do not store in glass bottles. Incompatible with aqueous solutions, strong acids, strong oxidizing agents. |
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| InChIKey | PQXKHYXIUOZZFA-UHFFFAOYSA-M |
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| LogP | 0.23 at 25℃ |
Description and Uses
lithium fluoride is a strong irritant to the eyes and skin; potassium bromide is toxic by ingestion and inhalation; sodium chloride is table salt, a medical concern when ingested in excess, but certainly of no significant hazard to emergency responders.
The important uses of lithium fluoride are as flux in glasses, vitreous enamels and glazes; in soldering and welding aluminum; and its prisms in infrared spectrophotometers. The compound also is used for storing solar energy.
Safety
| Symbol(GHS) |  GHS06 |
| Signal word | Danger |
| Hazard statements | H301-H315-H319-H335 |
| Precautionary statements | P301+P310+P330-P302+P352-P305+P351+P338 |
| Hazard Codes | T |
| Risk Statements | 25-32-36/37/38-23/24/25 |
| Safety Statements | 22-26-36/37/39-45 |
| RIDADR | UN 3288 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | OJ6125000 |
| F | 10-21 |
| Hazard Note | Toxic |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | III |
| HS Code | 28261900 |
| Toxicity | LD in guinea pigs (mg/kg): 200 orally, 2000 s.c. (Waldbott) |
