product

Chinese name: lithium fluoride

English name: Lithium fluoride

CAS 7789-24-4

EINECS 232-152-0

Chemical formula FLi

Molecular weight 25.94

InChI InChI=1/FH.Li/h1H;/ q;+ 1/p-1

InChIKey PQXKHYXIUOZZFA-UHFFFAOYSA-M

Density 2.64 g/mL at 25 ° C (lit.)

Melting point 845 ° C (lit.)

Boiling point 1681 ° C

Flash point 1680 ° C

Water solubility 0.29 g/100 mL (20 º C)

Steam pressure 0Pa at 25 ℃

Solubility in 0.29 g/100 mL (20 ° C) and hydrogen fluoride Insoluble in alcohol.

Refractive index 1.3915

PH value 6.0-8.5 (25 ℃, 0.01M in H2O)

Storage condition Store at+5 ° C to+30 ° C

Stability 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 o

Sensitivity

Appearance random crystals

Specific gravity 2.635

Color White to off-white

Maximum wavelength（ λ max) [' λ:  260 nm Amax: ≤0.01',

, ' λ:  280 nm Amax: ≤0.01']

Merck 14,5531

Ksp precipitation equilibrium constant pKsp: 2.74

Exposure limit ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3

Physical and chemical properties Lithium fluoride is a white powder with a sodium chloride crystal structure. Relative density 2.640, melting point 848 ℃, boiling point 1673 ℃. It begins to volatilize at 1100~1200 ℃, and its vapor is alkaline. Lithium fluoride is slightly soluble in water, but insoluble in alcohol and other organic solvents. At normal temperature, lithium fluoride is easily soluble in nitric acid and sulfuric acid, but not in hydrochloric acid, and can form Li2HF acid salt with hydrofluoric acid.

Product use: used as additive for aluminum electrolysis and rare earth electrolysis, optical glass manufacturing, desiccant, flux, etc

Dangerous goods sign T - toxic goods

Toxic substances

Risk term R25 - Toxic if swallowed.

R32 - Contact with acid releases extremely toxic gases.

R36/37/38 - Irritating to eyes, respiratory system and skin.

R23/24/25 - Toxic by inhalation, skin contact and ingestion.

Safety term S22 - Do not breathe dust.

S26 - In case of accidental contact with eyes, please immediately wash with plenty of water and seek medical advice.

S36/37/39 - Wear appropriate protective clothing, gloves and goggles or masks.

S45 - In the event of an accident or discomfort, seek medical attention immediately (if possible, show its label).

Dangerous goods transport No. UN 3288 6.1/PG 3