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.) |
||||||||||||||
| Boiling point: | 1681 °C |
||||||||||||||
| Density | 2.64 g/mL at 25 °C (lit.) |
||||||||||||||
| vapor pressure | 0Pa at 25℃ |
||||||||||||||
| refractive index | 1.3915 |
||||||||||||||
| Flash point: | 1680°C |
||||||||||||||
| storage temp. | Store at +5°C to +30°C. |
||||||||||||||
| solubility | Soluble in 0.29 g/100 mL (20°C) and hydrogen fluoride. Insoluble in alcohol. |
||||||||||||||
| form | random crystals |
||||||||||||||
| color | White to off-white |
||||||||||||||
| Specific Gravity | 2.635 |
||||||||||||||
| PH | 6.0-8.5 (25℃, 0.01M in H2O) |
||||||||||||||
| Water Solubility | 0.29 g/100 mL (20 ºC) |
||||||||||||||
| Sensitive | Hygroscopic |
||||||||||||||
| λmax | λ: 260 nm Amax: ≤0.01 λ: 280 nm Amax: ≤0.01 |
||||||||||||||
| Crystal Structure | NaCl type |
||||||||||||||
| crystal system | Cube |
||||||||||||||
| Merck | 14,5531 |
||||||||||||||
| Solubility Product Constant (Ksp) | pKsp: 2.74 |
||||||||||||||
| Space group | Fm3m |
||||||||||||||
| Lattice constant |
|
||||||||||||||
| Exposure limits | ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
||||||||||||||
| 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. |
||||||||||||||
| InChIKey | PQXKHYXIUOZZFA-UHFFFAOYSA-M |
||||||||||||||
| LogP | 0.23 at 25℃ |
||||||||||||||
| CAS DataBase Reference | 7789-24-4(CAS DataBase Reference) |
||||||||||||||
| NIST Chemistry Reference | Lithium fluoride(7789-24-4) |
||||||||||||||
| EPA Substance Registry System | Lithium fluoride (7789-24-4) |
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 |
| Hazardous Substances Data | 7789-24-4(Hazardous Substances Data) |
| Toxicity | LD in guinea pigs (mg/kg): 200 orally, 2000 s.c. (Waldbott) |
