13709-47-2

Basic information

• Product Name: Scandium trifluoride
• Synonyms: SCANDIUM TRIFLUORIDE;SCANDIUM FLUORIDE;SCANDIUM(III) FLUORIDE;Scandium fluoride (ScF3);scandiumfluoride(scf3);ScF3;SCANDIUM FLUORIDE, ANHYDROUS, 99.99%;SCANDIUM (III) FLUORIDE (99.9%-SC) (REO)
• CAS NO: 13709-47-2
• Molecular Formula: F₃Sc
• Molecular Weight: 101.95
• EINECS: 237-255-4
• Product Categories: Catalysis and Inorganic Chemistry;Chemical Synthesis;Crystal Grade Inorganics;Salts;Scandium Salts;ScandiumMetal and Ceramic Science;metal halide;Catalysis and Inorganic Chemistry;Chemical Synthesis;Crystal Grade Inorganics;Materials Science;Metal and Ceramic Science;Scandium;Scandium Salts
• Mol File: 13709-47-2.mol
• Article Data: 6

Chemical Properties

• Melting Point: 1515°C
• Appearance: white/Powder
• Density: 2.5
• Storage Temp.: Inert atmosphere,Room Temperature
• Sensitive: Hygroscopic
• Stability: hygroscopic
• CAS DataBase Reference: Scandium trifluoride(CAS DataBase Reference)
• NIST Chemistry Reference: Scandium trifluoride(13709-47-2)
• EPA Substance Registry System: Scandium trifluoride(13709-47-2)

Safety Data

• Hazard Codes: T,Xi
• Statements: 23/24/25-32
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 3288 6.1/PG 3
• WGK Germany: 3
• RTECS: VQ8930000
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 13709-47-2(Hazardous Substances Data)

Usage

Uses

Scandium Fluoride is applied in optical coating, catalyst, electronic ceramics, laser industry, and also the main materials for making Scandium metal and alloys. The main application of Scandium by weight is in Scandium-Aluminium alloys for minor aerospace industry components. Some items of sports equipment, which rely on high performance materials, have been made with Scandium-Aluminium alloys, including baseball bats,and bicycle frames and components. Lacrosse sticks are also made with Scandium. The American firearm manufacturing company Smith & Wesson produces revolvers with frames composed of Scandium alloy and cylinders of Titanium or Carbon steel.

Chemical Properties

hygroscopic white powder(s), and 99.9% pure sintered pieces of 3–12mm; pieces used as evaporation material for possible application in lasers [STR93] [CER91]

InChI:InChI=1/FH.Sc/h1H;/q;+3/p-1

Synthetic route

scandium(III) oxide + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2) + scandium fluoride oxide + ScOF*2H2O

Conditions	Yield
In water 0°C;

scandium(III) oxide + cadmium(II) fluoride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
byproducts: CdO;

potassium hydrogenfluoride (1279123-63-5) + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride pptn. from 7E-3 molar Sc(3+)-soln. in aq. HCl, 90-95°C, pH=2;; no quantitative react. in presence of Zr(4+), Ti(4+), Al(3+) or Fe(3+);,;	>99

scandium + ammonium fluoride + copper (12775-96-1, 15158-11-9, 15721-63-8, 16941-75-6, 17493-86-6, 19498-52-3, 20499-83-6, 20499-84-7, 20499-85-8, 20499-86-9, 20573-10-8, 20573-11-9, 21595-51-7, 21595-52-8, 22206-52-6, 26445-28-3, 28959-95-7, 37362-93-9, 39417-05-5, 54603-16-6, 54603-23-5, 54603-32-6, 54603-40-6, 54603-48-4, 54603-81-5, 54603-89-3, 56316-56-4, 95985-91-4, 122297-32-9, 7440-50-8) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In neat (no solvent) byproducts: H2; Sc:NH4F molar ratio was 1:4, heating up to 400 °C with 2 °C/h rate, 6 weeks, in a Cu-ampoule, under Ar; cooling with 2 °C/h rate;

scandium(III) oxide + ammonium fluoride + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride dissolving Sc2O3 in aq. HCl, addn. of concd. HF-soln., evapn., further addn. of aq. HF and evapn. until complete removal of HCl; addn. of aq. HF, addn. of excess NH4HF, evapn. to dryness;; heating in a dry N2-stream to 700-800°C to remove NH4*HF and moisture (Pt-vessel), pure product;;
In hydrogenchloride dissolving Sc2O3 in aq. HCl, addn. of concd. HF-soln., evapn., further addn. of aq. HF and evapn. until complete removal of HCl; addn. of aq. HF, addn. of excess NH4HF, evapn. to dryness;; heating in a dry N2-stream to 700-800°C to remove NH4*HF and moisture (Pt-vessel), pure product;;

ammonium fluoride + scandium(III) chloride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water on addn. of ScCl3-soln. to excess NH4F;;	0%

potassium fluoride + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water pptn. with aq. KF;;

scandium(III) + sodium fluoride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water pptn. with aq. NaF;;

scandium(III) oxide + xenon difluoride (13709-36-9) → scandium(III) fluoride (13709-47-2) + xenon

Conditions	Yield
In neat (no solvent) byproducts: oxygen; explosive convertion at 330-380°C, starting of fluorination at 210°C;

fluoride + scandium(III) → scandium(III) fluoride (13709-47-2) + tetrafluoroscandate(1-) (139890-84-9, 25376-96-9) + ScF(2+) + {ScF2}(2+)

Conditions	Yield
In perchloric acid formation in aq. soln.;;

fluoride + yttrium(III) → scandium(III) fluoride (13709-47-2) + tetrafluoroscandate(1-) (139890-84-9, 25376-96-9) + ScF(2+) + ScF2(1+)

Conditions	Yield
In water in aq. soln.;;

ScF2(1+) + fluoride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water formation in soln., determination of thermodynamic data of formation (enthalpy, free enthalpy, entropy);; not isolated;;
In water formation in soln., determination of complex formation constant;; not isolated;;
In water formation in soln., determination of thermodynamic data of formation (enthalpy, free enthalpy, entropy);; not isolated;;

fluorosilicic acid + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
With water In water byproducts: SiO2, HF; immediate hydrolysis of Sc2(SiF6)3; investigation of react.-mechanism;;
With water In water byproducts: SiO2, HF; immediate hydrolysis of Sc2(SiF6)3;;
With water In hydrogenchloride addn. of H2SiF6 to concd. soln. in HCl while introduction of H2P-vapor;;
In water from the neutral or acidic soln. on addn. of H2SiF6 in the cold or in the warm,;
In not given slow, but complete pptn. on boiling in strongly acid soln.; product is free of rare earth compounds;;	>99

fluorosilicic acid + scandium(III) → scandium(III) fluoride (13709-47-2) + 2Sc(3+)*3{SiF6}(2-)=Sc2{SiF6}3

Conditions	Yield
In water pptn. at room temp.;;	A 0% B n/a

potassium hexafluorosilicate + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride pptn. from 7E-3 molar Sc(3+)-soln. in aq. HCl, 90-95°C, pH=2;; no quantitative react. in presence of Zr(4+), Ti(4+), Al(3+) or Fe(3+);,;	>99

hydrogen fluoride (7664-39-3) + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogen fluoride pptn. from aq. soln. by addn. of HF-soln., separation of ppt., evapn. (water-bath), addn. of HF-soln., cryst. product;;
In hydrogen fluoride pptn. with aq. HF;;

sodium hexafluorosilicate + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride pptn. from 7E-3 molar Sc(3+)-soln. in aq. HCl, 90-95°C, pH=2;; no quantitative react. in presence of Zr(4+), Ti(4+), Al(3+) or Fe(3+);,;	>99

Si2F6(2-) + scandium(III) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water at room temp.;;

scandium → scandium(III) fluoride (13709-47-2)

Conditions	Yield
With fluoroplast-4 In neat (no solvent) byproducts: C; High Pressure; shock compression reaction of Sc with fluoroplast-4; X-ray diffraction;

scandium + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In neat (no solvent) at increased pressure in an autoclave, 250°C, up to 24h. cooling in the autoclave to 60°C, removal of absorbed HF in vac.;;
In neat (no solvent) at increased pressure in an autoclave, 250°C, up to 24h. cooling in the autoclave to 60°C, removal of absorbed HF in vac.;;

calcium fluoride + scandium → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In gas byproducts: Ca, ScF2, ScF; in the gas phase over the solid mixture at 1410K, Ta-Knudsen-cell;;
In neat (no solvent, gas phase) byproducts: Ca, ScF2, ScF; in the gas phase over the solid mixture at 1410K, Ta-Knudsen-cell;;

hydrogen fluoride (7664-39-3) + scandium(III) chloride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogen fluoride aq. HF; reaction of ScCl3 with aq. HF; evapn. of the liquid at 60°C and drying the solid at 80-100°C on a sand bath;

{ScF2}(2+) + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In water byproducts: H(1+); formation in soln., determination of equilbrium constant and thermodynamic data of formation;;

scandium(III) nitrate + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
pptn. on hydrofluoric acid addn. to Sc-salt soln.;

bastnaesite + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride byproducts: CO2; pH 1 to <4, heating to 60-100°C for 4h while stirring, washing with H2O until neutral react.;;	>95

scandium(III) oxide + hydrogen fluoride (7664-39-3) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogen fluoride aq. HF; gradual addition of oxide to acid under periodical cooling; ppt. filtering off, drying (150-200°C), grinding; thermogravimetric analysis;

calcium fluoride + bastnaesite → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In hydrogenchloride byproducts: CO2, CaCl2; pH 1 to <4, heating to 60-100°C for 4h while stirring, washing with H2O until neutral react.;;	>95

scandium(III) chloride → scandium(III) fluoride (13709-47-2)

Conditions	Yield
With HF In water pptn. of aq. soln. of scandium chloride with excess of concd. hydrofluoric acid; ppt. dried and heated in inert atmosphere; chem. anal.;

scandium cryolite → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In neat (no solvent) thermal decompn. at 350-340°C; intermediate formation of NH4ScF4 at 260-350°C;; pure product;;
In potassium hydroxide aq. KOH; pptn. on potentiometric titration of a 0.01m aq. soln. with aq. KOH at pH about 7.5 to 7.7;;
In hydrogen fluoride byproducts: NH4(+), HF2(-); aq. HF;
In neat (no solvent) byproducts: NH3; heating under 1 bar NH3 pressure; detected by powder X-ray diffractometry;

scandium tris(trifluoromethanesulfonate) → scandium(III) fluoride (13709-47-2)

Conditions	Yield
In neat (no solvent) byproducts: COF2, SO2; thermal decompn. in inert atmosphere (exclusion of moisture);;
In neat (no solvent) byproducts: COF2, SO2; thermal decompn. in inert atmosphere (exclusion of moisture);;

scandium(III) fluoride (13709-47-2) + magnesocene → tricyclopentadienylscandium(III)

Conditions	Yield
anhydr. fluoride, 220-260°C, 3 to 6 h;	83%

scandium(III) fluoride (13709-47-2) + scandium(III) chloride → scandium

Conditions	Yield
With potassium chloride; sodium chloride In melt Electrolysis; ScF3 or ScCl3; vac., heating to 300-350°C, filling with Ar, electrolysing at 780-860°C (NaCl electrolyte) or at 720-750°C (NaCl+KCl electrolyte), current density = 0.1-0.5 A/cm**2; detd. by mass spectrography;	65%

scandium(III) fluoride (13709-47-2) → tris(η5-cyclopentadienyl)scandium(III) (839684-48-9, 1298-54-0, 51269-38-6) + tris(fluorodicyclopentadienylscandium)

Conditions	Yield
With (C5H5)Na In tetrahydrofuran refluxing for 12 h; under argon or vac.;; drying by heating at 110°C under vac. for 7 h; extn. with toluene; concn.; recrystn. from toluene/hexane (2/1); elem. anal.;	A 9% B 14%

scandium(III) fluoride (13709-47-2) → scandium

Conditions	Yield
With calcium In neat (no solvent) thermal redn, (calcium metal); electrochem. refinement;
With calcium In neat (no solvent) byproducts: CaF2; reduction with Ca under Ar, start of react. at 850-900°C; Ta- or Zr-boride-vessel;; heating to 1400°C, distn. in vac.;;
With calcium In neat (no solvent) reduction with Ca under Ar, start of react. at 700-800°C, heating to 1500°C at 10E-4 Torr (distn. of Sc); Mo-vessel;;

scandium(III) fluoride (13709-47-2) + water (7732-18-5) → scandium fluoride oxide

Conditions	Yield
In neat (no solvent) at 900°C, heating slowly;; detected by thermogravimetric and X-ray-measurements;;
With air In neat (no solvent) hydroylsis by moisture in the furnace on heating in dry Ar or He;;
In neat (no solvent) hydroylsis in a stream of moist N2 at 800°C;; not pure, contaminated with oxide;;

scandium(III) fluoride (13709-47-2) + water (7732-18-5) → scandium(III) oxide

Conditions	Yield
In neat (no solvent) on fast heating to 300°C;; detected by thermogravimetric and X-ray-measurements;;
In neat (no solvent) 975.-+.25°C, streaming H2O-vapor, 4-30min; increase of react.-rate in presence of U3O8 and/or Cr2O3;;	>99
In neat (no solvent) at 1040°C, heating slowly;; detected by thermogravimetric and X-ray-measurements;;

rubidium fluoride + scandium(III) fluoride (13709-47-2) → rubidium scandium hexafluoride

Conditions	Yield
In neat (no solvent, solid phase) solid state reacn. between appropriate amts. of RbF and ScF3 in a sealed Pt tube under Ar;

scandium(III) fluoride (13709-47-2) + cesium fluoride (13400-13-0) → caesium scandium hexafluoride

Conditions	Yield
In neat (no solvent, solid phase) solid state reacn. between appropriate amts. of CsF and ScF3 in a sealed Pt tube under Ar;

xenon difluoride (13709-36-9) + scandium(III) fluoride (13709-47-2) + terbium(III) fluoride (13708-63-9) → terbium tetrafluoride (36781-15-4)

Conditions	Yield
In neat (no solvent) byproducts: Xe; heating (430-470°C, 0.5-1 h); DTA;

scandium(III) fluoride (13709-47-2) + fluoride → tetrafluoroscandate(1-) (139890-84-9, 25376-96-9)

Conditions	Yield
In water formation in soln., determination of complex formation constant;; not isolated;;

Upstream product

• 7664-39-3 hydrogen fluoride 
• 1279123-63-5 potassium hydrogenfluoride 
• 12775-96-1 copper 
• 10361-84-9 scandium(III) chloride 
• 7789-23-3 potassium fluoride 
• 7681-49-4 sodium fluoride 
• 16961-83-4 fluorosilicic acid 
• 84963-91-7 ScF₃*N₂H₄ 
• 39587-82-1 sodium tetrafluoroscandate 

Downstream Products

• 839684-48-9 tris(η⁵-cyclopentadienyl)scandium(III) 
• 14017-33-5 scandium monofluoride 
• 36781-15-4 terbium tetrafluoride 

Related news

The reaction of Scandium trifluoride (cas 13709-47-2) with cyclopentadienyl salts and the crystal and molecular structure of the trimer of fluorodicyclopentadienylscandium09/09/2019

The reaction of ScF3 with (C5H5)2Mg gives a mixture of (C5H5)3Sc and (η5-C5H5)2ScF, not pure (C5H5)3Sc as reported previously. The same mixture is obtained on treating ScF3 with C5H5Na in tetrahydrofuran. The two products can be separated since (η-C5H5)2ScF is soluble in toluene whereas (C5H5)...detailed

Reaction of Scandium trifluoride (cas 13709-47-2) with hydrazine09/08/2019

ScF3 reacts with anhydrous hydrazine yielding ScF3·N2H4; upon heating the compound in inert atmosphere ScF3 is regained. With hydrazine hydrate N2H5Sc(OH)F3 is obtained with solid ScF3; it decomposes to ScF3 in two steps.detailed

Relevant articles and documents

Preparation and examination of the properties of complex scandium fluorides

Precipitation of scandium with sodium fluoride from an ammonium hydrogen difluoride solution was examined at the molar ratios of Na to Sc within 1-14 and different initial concentrations of scandium in solution. The composition of the resulting precipitate was determined by X-ray phase analysis method. The solubility of the scandium compounds synthesized was examined. Pleiades Publishing, Ltd., 2011.

Syntheses and structures of Li3ScF6 and high pressure LiScF4-, luminescence properties of LiScF4, a new phase in the system LiF-ScF3

Colorless single crystals of Li3ScF6 have been prepared by reacting the binary components LiF and ScF3 at 820°C for 16 h in argon atmosphere. This complex fluoride is the only stable phase in the system LiF-ScF3 under ambient pressure. According to a structure refinement based on single crystal X-ray diffraction data it crystallizes in the centrosymmetric space group P3c1 with a=8.78.3(1)A and c=9.518(1)A. The new structure of Li3ScF6 is a filled variant of the Na2GeF6 type structure and can be described in terms of a hexagonal close packing of fluorine in which 2/3 of the octahedral holes are occupied by Sc and Li. High pressure/high temperature studies of the system LiF-ScF3 show that the new phase LiScF 4 is formed at around 5.5 GPa and 575°C. According to Rietveld refinements of powder X-ray diffraction data LiScF4 adopts the Scheelite type structure (space group I41/a) with a=4.980(1)A and c=10.074(1)A. A sample of LiScF4 doped with 1% Er exhibits an intense luminescence in the far IR region.