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Chlorides and other halides

Lithium fluoride

Also known as Fluorolithium, Lithium monofluoride, Lithium fluoride (LiF)

CAS 7789-24-4Formula FLiMolar mass 25.94 g/molEC 232-152-0
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant 87 suppliers listed Drug substance
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Lithium fluoride chemical structure, FLi, CAS 7789-24-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Cubic crystals (NaCl lattice) or white fluffy powder
Melting point
848.2 °C
Boiling point
1,673 °C
Density
2.640 g/cm³
Solubility
0.134 g/100 g water at 25 °C, soluble in acid
HS code
282619
Category
Chlorides and other halides
Illustrative photo, fine white powder in a clear glass bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Lithium fluoride?

Plain description, key identifiers and synonyms

Lithium fluoride is a chemical substance with the molecular formula FLi and a molar mass of 25.94 g/mol. Its CAS registry number is 7789-24-4.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
lithium fluoride
CAS number
7789-24-4 CAS number cross-checkedOther or deprecated CAS: 14885-65-5, 17409-87-9
EC numbers
232-152-0, 235-292-0, 238-958-9, 241-438-4
Molecular formula
FLi
UNII
1485XST65B
MDL number
MFCD00011090
INCI name
LITHIUM FLUORIDE
InChIKey
PQXKHYXIUOZZFA-UHFFFAOYSA-M
InChI
InChI=1S/FH.Li/h1H;/q;+1/p-1
SMILES (canonical and isomeric)
[Li+].[F-]

Synonyms

  • Fluorolithium
  • Lithium monofluoride
  • Lithium fluoride (LiF)
  • Lithium fluorure
  • TLD 100
  • NTL 50
  • TLD 700
  • Lithium Fluoratum
  • lithium, fluoride
  • Trilithium trifluoride
  • Lithium fluoride (Li3F3)
  • (6L)Lithium fluoride
  • Lithium fluoride (7LiF)
  • LiF
  • Lithium fluoride anhydrous
  • 100g of Electrolytic Bath
  • Lithium fluorure (FRENCH)
  • Lithium bifluoride
  • (7L)Lithium fluoride
  • Lithium hydrogen difluoride
  • Lithium fluoride (Li(HF2))
  • Lithium fluoride, ultra dry
  • Lithium fluoride, Optical Grade
  • Lithium fluoride, 99.99% (metals basis)
  • Lithium fluoride, optical grade, 99.8%
Show all 26 synonyms
  • Hydrofluoric acid, ion(1-), with lithanylium (1:1)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Cubic crystals (NaCl lattice) or white fluffy powderexp.
Melting point
848.2 °Cexp.
Boiling point
1,673 °Cexp.
Density
2.640 g/cm³exp.
Solubility
0.134 g/100 g water at 25 °C, soluble in acidexp.
Vapour pressure
1 mm Hg at 1047 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
25.94 g/molcalc.
Exact mass
26.0144 Dacalc.
LogP (octanol/water)
-5.99calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H301Toxic if swallowed.
  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (20)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Lithium fluoride suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 87 suppliers
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Where suppliers are based

87 suppliers in 11 countries

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Lithium fluoride price

Indicative price range per kg from live supplier offers

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Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Large, pure crystals of lithium fluoride are employed in optical systems for ultraviolet, visible, or infrared light and in X-ray monochromators.

X-ray Spectroscopy: Typically lithium fluoride is used for 0.03-0.38 nm ... wavelengths.

Lithium fluoride is used in brazing or soldering fluxes and in welding rod coatings.

It is a strong flux for glasses, enamels, and glazes and imparts a lower coefficient of expansion to glasses. It is also an important component of fluoride glasses in infrared optical applications.

Industrial uses: Flux agent, Conductive agent.

Consumer uses: Flux agent, Sealant (barrier).

Cosmetic ingredient, INCI name LITHIUM FLUORIDE(buffering, oral care)

Cosmetic functions

  • Buffering
  • Oral care

How it is made

Prepared from lithium hydroxide and hydrogen fluoride or by dissolving lithium carbonate in excess hydrogen fluoride, evaporating to dryness, and heating to red heat.

Reaction of hydrofluoric acid with lithium carbonate.

Reaction of lithium carbonate or hydroxide and hydrofluoric acid

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Lithium fluoride is traded under.

HS 2826.19Indicative HS code

Fluorides, other

World exports in 2024
$428M
+8.5% vs 2023, imports $374M
2019 to 2024
Top exporters
  1. United States27.9%
  2. China20.9%
  3. Japan15.4%
Top importers
  1. China15.6%
  2. South Korea14.6%
  3. United States12.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Lithium fluoride is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Lithium fluoride, based on the data on this page

What is Lithium fluoride?

Lithium fluoride is a chemical substance with the molecular formula FLi and a molar mass of 25.94 g/mol. Its CAS registry number is 7789-24-4.

What is the CAS number of Lithium fluoride?

The CAS registry number of Lithium fluoride is 7789-24-4. Other or deprecated CAS numbers: 14885-65-5, 17409-87-9.

What is the molecular formula and weight of Lithium fluoride?

The molecular formula of Lithium fluoride is FLi and its molar mass is 25.94 g/mol.

What is Lithium fluoride used for?

Large, pure crystals of lithium fluoride are employed in optical systems for ultraviolet, visible, or infrared light and in X-ray monochromators. X-ray Spectroscopy: Typically lithium fluoride is used for 0.03-0.38 nm ... wavelengths. Lithium fluoride is used in brazing or soldering fluxes and in welding rod coatings.

Is Lithium fluoride hazardous?

Lithium fluoride carries the GHS signal word "Danger". Main hazards: toxic if swallowed, harmful if swallowed, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Lithium fluoride?

Lithium fluoride is usually classified under HS code 282619 (Fluorides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Lithium fluoride?

CompoundList lists 87 suppliers of Lithium fluoride in China, India, United States, Germany and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Lithium fluoride in India?

21 suppliers in India list Lithium fluoride on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Lithium fluoride?

Suppliers quote Lithium fluoride on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Lithium fluoride

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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