CAS No.7440-09-7,Potassium Suppliers,MSDS download

: potassium hydroxide

: 7440-09-7
potassium

Conditions

Conditions	Yield
With pyrographite In neat (no solvent) reduction of a small amount KOH starts at 700°C (in vac.) and proceeds at 900 °C;;	90%
With pyrographite In neat (no solvent) reduction of a small amount KOH starts at 700°C (in vac.) and proceeds at 900 °C;;	90%
With pyrographite In neat (no solvent) KOH is reduced by C at lower temp. than by Fe;;

: potassium tungstate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With zirconium In neat (no solvent) K2WO4 + Zr (1:4), start of react.: 570 °C, calm react. process, yield: about 80% K, no oxide;;	80%
With zirconium In neat (no solvent) pressed powder mixture (K2WO4:Zr = 1:4), heating in vac. to 570°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;
With Zr In neat (no solvent) pressed powder mixture (K2WO4:Zr = 1:4), heating in vac. to 570°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;

: potassium chromate

A: chromium(III) oxide

B: 7440-09-7
potassium

Conditions

Conditions	Yield
With zirconium In neat (no solvent) react. of pressed powd. K2CrO4/Zr mixt. (weight ratio 1:2 and 1:4) at 800 °C;;	A 0% B 80%

: 20762-60-1
potassium azide

: 7440-09-7
potassium

Conditions

Conditions	Yield
In neat (no solvent) byproducts: N; heating 10-12g KN3 (fine powder) to 355°C (high vacuum, electrically heated tube from instrument glass (Jena)), decompn. starts sometimes 3-4h after obtaining temp., synthesis lasts some d;; spectroscopically pure and gas-free K obtained;;	80%
In neat (no solvent) byproducts: N; thermal decompn. of KN3 (above 350°C, formation of N);;
In neat (no solvent) byproducts: N; thermal decompn. of KN3 begins at 320°C and proceeds continually at 360°;;

: potassium sulfate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With iron In neat (no solvent) byproducts: Fe2O3, FeS; heating react. mixture in a special apparatus for 2 h at 1000 °C, 1mm Hg; using of rough Fe-splints possible; further by-products: SO2 and O2;;	80%
With iron In neat (no solvent) reductn. of K2SO4 by Fe in a quartz pot at 875 up to 1300 °C;; impured with 10 % sulfide;;	60%
With zirconium In neat (no solvent) byproducts: K-oxide, K-sulfide; K2SO4 + Zr (1:4), start of react.: 725 °C, explosion, yield: 20% K, 20% K-oxide, 20% K-sulfide;;	20%

: 7440-67-7
zirconium

: potassium tungstate

: 7440-09-7
potassium

Conditions

Conditions	Yield
redn. with Zr powder in vac., 570°C;	80%
redn. with Zr powder in vac., 570°C;	80%

: potassium molybdate(VI)

: 7440-09-7
potassium

Conditions

Conditions	Yield
With zirconium In neat (no solvent) heating of K2MoO4 and Zr powder (1:4) in vac. at 500°C;;	70%
With zirconium In neat (no solvent) K2MoO4 + Zr (1:4), start of react.: about 500 °C, calm react. process, yield: about 70% K, no oxide;;	70%
With Zr In neat (no solvent) heating of K2MoO4 and Zr powder (1:4) in vac. at 500°C;;	70%
With zirconium In neat (no solvent) pressed powder mixture (K2MoO4:Zr = 1:4), heating in vac. to about 500°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;
With Zr In neat (no solvent) pressed powder mixture (K2MoO4:Zr = 1:4), heating in vac. to about 500°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;

: potassium metaarsenate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With iron In neat (no solvent) byproducts: Fe-oxide, Fe-arsenide; heating of react. mixture in a special apparatus at 900 °C, 1mm Hg for 8h;; very pure and As-free K obtained;;	50%

: potassium dichromate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With zirconium In neat (no solvent) byproducts: K-oxide; K2Cr2O7 + Zr (1:4), start of react.: 370 °C, explosion, yield: 40% K, 30% oxide;;	40%
With zirconium In neat (no solvent) pressed powder mixture (K2Cr2O7:Zr = 1:10), heating in vac. to 380°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;
With aluminium In neat (no solvent) on ignition of a mixture of K2Cr2O7 and Al; vaporization of K;;

: 584-08-7
potassium carbonate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With iron In neat (no solvent) byproducts: Fe2O3, CO, CO2; heating react. mixture in a special apparatus for 2 h at about 1000 °C, 1mm Hg; sucking off CO, CO2 (formation of explosive compounds possible);;	>99
With aluminium In neat (no solvent) byproducts: Al2O3, C; heating of K2CO3 with Al in a stream of H2 to red heat; no potassium carbonyl is formed;;	>99
With pyrographite In neat (no solvent) byproducts: CO; reduction of K2CO3 by C; no formation of K2O as intermediate;;

: 7440-23-5
sodium

: 584-08-7
potassium carbonate

A: 7440-09-7
potassium

B: 497-19-8
sodium carbonate

...Expand

: 584-08-7
potassium carbonate

: 7429-90-5
aluminium

A: 1333-84-2, 1344-28-1
aluminum oxide

B: 7440-09-7
potassium

Conditions

Conditions	Yield
In neat (no solvent) byproducts: C; heating equal amounts of carbonate and Al powder to red heat;; powdery product mixture obtained;;
In neat (no solvent) byproducts: C; heating equal amounts of carbonate and Al powder to red heat;; powdery product mixture obtained;;

...Expand

: potassium tartrate

A potassium doped carbon: potassium doped carbon

B: 7440-09-7
potassium

Conditions

Conditions	Yield
With pyrographite

: potassium chromate

: 7440-09-7
potassium

Conditions

Conditions	Yield
With zirconium In neat (no solvent) pressed powder mixture (K2CrO4:Zr = 1:4), heating in vac. to 800°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;
With zirconium In neat (no solvent) K2CrO4 + Zr (1:4), start of react.: 800 °C, calm react.process, yield: up to 80% K, no oxide; especially appropriate for direct preperation of small amount of K in apparatus (at low temp.);;	<=80
With Zr In neat (no solvent) pressed powder mixture (K2CrO4:Zr = 1:4), heating in vac. to 800°C; mostly explosive reaction, with great excess of Zr smoothy;; further products;;

: potassium fluoride

: 7440-09-7
potassium

Conditions

Conditions	Yield
With magnesium In neat (no solvent) heating a mixt. of 50 g dried KF and 18 g Mg gravel in an iron retort at pressure of 11 mm to 500 - 700 °C;; K distills off at 540 °C into a paraffine filled receiver; yield: 48 g;;
With aluminium In neat (no solvent) at m. p. of KF with Al pieces (use of Al powder is dangerous);; K is distilled off; pure;;
With calcium In neat (no solvent) at red heat;;

: potassium fluoride

: 7429-90-5
aluminium

A: tripotassium hexafluoroaluminate

B: 7440-09-7
potassium

Conditions

Conditions	Yield
In neat (no solvent) on strong heating;;
In neat (no solvent) on strong heating;;

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: 7558-02-3
potassium bromide

: 7440-09-7
potassium

Conditions

Conditions	Yield
With iron In neat (no solvent) byproducts: Fe-halogenide; special apparatus used, 900 - 1000 °C, 1mm Hg; yield: small amount of K;;

: 7558-02-3
potassium bromide

A: 10097-32-2
bromine

B: 7440-09-7
potassium

Conditions

Conditions	Yield
Kinetics; Ar-carrier gas, at 3020 K; time-resolved absorption;

: 7440-23-5
sodium

: 7558-02-3
potassium bromide

A: 7440-09-7
potassium

B: 7647-15-6
sodium bromide

Conditions

Conditions	Yield
Kinetics; in system NaBr-K-Na-KBr;
Kinetics; in system NaBr-K-Na-KBr;

...Expand

: 7727-15-3
aluminium bromide

: 7558-02-3
potassium bromide

A: 7440-09-7
potassium

B: 7429-90-5
aluminium

Conditions

Conditions	Yield
In nitrobenzene Electrolysis;	A n/a B 0%
In nitrobenzene Electrolysis;	A n/a B 0%

...Expand

: potassium chloride

: 7440-09-7
potassium

Conditions

Conditions	Yield
With barium In neat (no solvent) evapn. of a mixture of a KCl soln. and a 16 % Ba(N3)2 soln. in vac to dryness; residue is heated in high vac.; decompn. of Ba(N3)2 at 100 °C forming finely dispersed Ba which acts as reducing agent: formation of K from KCl on further heating;; small amounts of pure K are obtained quickly;;
With aluminium In neat (no solvent) addn. of Al to molten KCl;;
With aluminium In neat (no solvent) with Al-powder at high temperatures;;

: potassium chloride

A: 7440-09-7
potassium

B: 7782-50-5
chlorine

Conditions

Conditions	Yield
Electrochem. Process; Equilibrium potential at 800 °C: 3.32 V.;

: potassium chloride

: 7439-95-4
magnesium

A: 7440-09-7
potassium

B: 7786-30-3
magnesium chloride

Conditions

Conditions	Yield
In neat (no solvent) Incomplete reaction.;
In neat (no solvent) Incomplete reaction.;

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: potassium chloride

: 7440-23-5
sodium

A: 7440-09-7
potassium

B: 7647-14-5
sodium chloride

Conditions

Conditions	Yield
In further solvent(s) Kinetics; solvent: Sn, Bi or Sb;
Kinetics; at 900 °C; in system NaCl-K-Na-KCl;

...Expand

: potassium chloride

: 7440-39-3
barium

: 7440-09-7
potassium

Conditions

Conditions	Yield
evapn. of reaction mixture formed from BaN6 and alkali chloride to dryness, then reaction at temp. of distn. of product; alkali metal distilles off;
evapn. of reaction mixture formed from BaN6 and alkali chloride to dryness, then reaction at temp. of distn. of product; alkali metal distilles off;

: potassium chloride

: 7440-39-3
barium

A: 7440-09-7
potassium

B: barium(II) chloride

Conditions

Conditions	Yield
In further solvent(s) Kinetics; solvent: Sn, Bi or Sb;

...Expand

: hydrogen

: potassium chloride

: 7440-09-7
potassium

Conditions

Conditions	Yield
In neat (no solvent) in Ar flow; react. of atomic H with solid KCl and its vapors; detd. by emission spectroscopy and resonance fluorescence; atomic potassium obtained;

: potassium hydride

: 7440-09-7
potassium

Conditions

Conditions	Yield
In neat (no solvent) byproducts: H; decompn. of KH on heating to red heat in vacuum;;
In neat (no solvent) byproducts: H; decompn. of KH on heating to red heat in vacuum;;

: potassium hydride

A: 1333-74-0
hydrogen

B: 7440-09-7
potassium

Conditions

Conditions	Yield
Kinetics;

: 7440-69-9
bismuth

: 7440-09-7
potassium

: 7704-34-9
sulfur

: potassium metathiobismuthite

Conditions

Conditions	Yield
In neat (no solvent)	100%
differential thermal anal.;	100%

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: 3(5)-(ferrocen-1-yl)pyrazole

: 7440-09-7
potassium

: K(1+)*{(C5H5)Fe(C5H4C3H2N2)}(1-)=K{(C5H5)Fe(C5H4C3H2N2)}

Conditions

Conditions	Yield
In benzene a stirred soln. of the Fe-compd. and metallic K was heated to 50-60°C for 4 h; filtn., washed with C6H6, dried, elem. anal.;	100%

: bis(η5-2,3-dihydro-1H-1,3-diborolyl)platinum

: 7440-09-7
potassium

: 2K(1+)*[Pt(C3B2(CH3)(C2H5)4)2](2-)*99C4H8O=K2[Pt(C3B2(CH3)(C2H5)4)2]*99C4H8O

Conditions

Conditions	Yield
In tetrahydrofuran (N2 or Ar); stirring over potassium mirror, 12 h; filtering, concg. in vac.;	100%

: tellurium

: 7440-09-7
potassium

: 7440-43-9
cadmium

: potassium cadmium(II) telluride

Conditions

Conditions	Yield
In neat (no solvent, solid phase) under Ar; mixt. was heated to 523 K for 1 d, then heated at 1023 K for 1d, then cooled to 773 K at 2 K/h, kept at 773 K for 3 d, then cooled to 473 K at 2 K/h in 5 d before switching off the furnace; XRD;	100%

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: tellurium

: 7440-09-7
potassium

: 7440-66-6
zinc

: potassium zinc(II) telluride

Conditions

Conditions	Yield
In neat (no solvent, solid phase) under Ar; mixt. was heated to 523 K for 1 d, then heated at 973 K for 1 d, then cooled to 773 K at 2 K/h, kept at 773 K for 3 d, then cooled to 473 K at 2 K/h in 5 d before switching off the furnace; XRD;	100%

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: 12116-66-4
bis(cyclopentadienyl)hafnium dichloride

: 17455-13-9
18-crown-6 ether

: 7440-09-7
potassium

: (18-crown-6)*K[Cp2HfCl2]

Conditions

Conditions	Yield
In toluene (N2) Hf complex, K and 18-crown-6 in toluene were stirred for 24 h; pentane was added, ppt. was filtered off; elem. anal.;	100%

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: yttrium(III) chloride triisopropanolate

: 7440-09-7
potassium

: 555-31-7
aluminum isopropoxide

: 67-63-0
isopropyl alcohol

: Y(3+)*Al(3+)*6CH(CH3)2O(1-) = {(Y(OCH(CH3)2)2(Al(OCH(CH3)2)4))}

Conditions

Conditions	Yield
In benzene byproducts: KCl; exclusion of moisture, slow addn. of a soln. of KAl(OPr(i))4 (K, Al(OPr(i))3 and OHCH(CH3)2 in C6H6, reflux, 2 h) to a suspension of the Y-salt in C6H6, stirring, 60°C, addn. of KOPr(i) (K, HOCH(CH3)2 in C6H6) stirring, molar ratio 1:1:2 Y:KAl:K; recrystn. (n-hexane) yielding 60%;	99%

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: 7440-09-7
potassium

: 555-31-7
aluminum isopropoxide

: 67-63-0
isopropyl alcohol

: mercury dichloride

: mercury bis(tetraisopropoxyaluminate)

Conditions

Conditions	Yield
In diethyl ether; isopropyl alcohol byproducts: KCl, Hg(Oi-Pr)2; K dissolved in i-PrOH, Al(Oi-Pr)3 added, this soln. is added to an ether soln. of the metal chloride, mixt. stirred for ca. 2 h at 0 °C, Hg:Al:K=1:1:2; filtered; elem anal.;	99%
In diethyl ether; isopropyl alcohol byproducts: KCl; K dissolved in i-PrOH, Al(Oi-Pr)3 added, this soln. is added to an ether soln. of the metal chloride, mixt. stirred for ca. 2 h at 0 °C, Hg:Al:K=1:2:2; filtered; elem anal.;	97%

...Expand

: 156219-63-5, 159861-02-6
[(CH3)Zn((CH3)3CNCHCHNC(CH3)3)]2

: 7440-09-7
potassium

: K(1+)*Zn(CH3)((CH3)3CNCHCHNC(CH3)3)(1-)=K[Zn(CH3)((CH3)3CNCHCHNC(CH3)3)]

Conditions

Conditions	Yield
In tetrahydrofuran N2-atmosphere; stirring (room temp., 16 h); evapn. (vac.), washing (Et2O), drying (vac.);	99%
In tetrahydrofuran (inert atmosphere); stirring (room temp., 16 h); solvent removal (vac.), washing (hexanes), drying (vac.); elem. anal.;	99%

: 866338-41-2
(tetramethylcyclopentadienyl)2UMe2

: 7440-09-7
potassium

: 2C5(CH3)4H(1-)*U(3+)*2CH3(1-)*K(1+)=[(C5(CH3)4H)2U(CH3)2K]

Conditions

Conditions	Yield
In toluene (Ar); Schlenk technique; toluene was added to K; mixt. was vigorously stirred under heating; soln. of U complex in toluene was added dropwise; mixt. was cooled to room temp. for 3 d; solvent removed; residue washed (toluene); washings discarded; residue dried; elem. anal.;	99%

: 191107-88-7
C2B3(OCH3)(Si(CH3)3)2(C6H(CH3)4)2

: 7440-09-7
potassium

: 2K(1+)*C2B3(OCH3)(Si(CH3)3)2(C6H(CH3)4)2(2-)=K2[C2B3(OCH3)(Si(CH3)3)2(C6H(CH3)4)2]

Conditions

Conditions	Yield
In diethyl ether	99%

: Graphite

: 7440-09-7
potassium

: potassium graphite

Conditions

Conditions	Yield
In neat (no solvent) at 130℃; for 3h; Heating;	99%
at 120℃; for 2h; Inert atmosphere; Schlenk technique; Heating;
In neat (no solvent, solid phase) at 20℃; Inert atmosphere;

: C24H33BO

: 7440-09-7
potassium

: C20H25B(2-)*C4H8O*2K(1+)

Conditions

Conditions	Yield
In tetrahydrofuran at -78 - 20℃; Schlenk technique; Inert atmosphere;	99%

: 1291-32-3
zirconocene dichloride

: 7440-09-7
potassium

: 108-68-9
3,5-Dimethylphenol

: (η5-C5H5)2Zr(3,5-dimethylphenolato)2

Conditions

Conditions	Yield
In tetrahydrofuran byproducts: KCl; anhydrous atmosphere; refluxing K with 3,5-dimethylphenol, then addn. to Zr-complex (molar ratio Zr:phenolate=1:2), refluxing and stirring (12 h, room temp.); KCl filtered off, concentration, recrystn. (THF, hexane); elem. anal.;	98%

...Expand

: 139055-84-8
H(Sb(ClCH2CH(O)CH(O)CH2Cl)2)

: 7440-09-7
potassium

: K(1+)*(Sb(ClCH2CH(O)CH(O)CH2Cl)2)(1-)=K(Sb(ClCH2CH(O)CH(O)CH2Cl)2)

Conditions

Conditions	Yield
With methanol In methanol refluxing potassium in methanol, addn. of the soln. to a suspn. of the antimony compd., refluxing for 1.5 h; all manipulations under anhydrous atmosphere; concg. under reduced pressure, elem. anal.;	98%

: yttrium(III) chloride triisopropanolate

: 7440-09-7
potassium

: 555-31-7
aluminum isopropoxide

: 67-63-0
isopropyl alcohol

: {(ClY(Al(OCH(CH3)2)4)2(HOCH(CH3)2))2}

Conditions

Conditions	Yield
In benzene byproducts: KCl; exclusion of moisture, slow addn. of a soln. of KAl(OPr(i))4 (prepared from K, Al(OPr(i))3 and isopropanol in benzene, reflux, 2 h) to a suspension of the Y salt in benzene with stirring, 60°C, 5 h, then stirring overnight, ca 30°C; filtration of KCl, removal of volatiles under reduced pressure (30°C/ 1 Torr), recrystn. (n-hexane-CH2Cl2 (2:1)) yielding ca 60%, elem. anal.;	98%

Yield

In benzene byproducts: KCl; exclusion of moisture, slow addn. of a soln. of KAl(OPr(i))4 (prepared from K, Al(OPr(i))3 and isopropanol in benzene, reflux, 2 h) to a suspension of the Y salt in benzene with stirring, 60°C, 5 h, then stirring overnight, ca 30°C; filtration of KCl, removal of volatiles under reduced pressure (30°C/ 1 Torr), recrystn. (n-hexane-CH2Cl2 (2:1)) yielding ca 60%, elem. anal.;

98%

...Expand

: 7440-09-7
potassium

: 7705-08-0
iron(III) chloride

: 555-31-7
aluminum isopropoxide

: FeCl{Al(Oi-Pr)4}2

Conditions

Conditions	Yield
In isopropyl alcohol; benzene byproducts: KCl; treatment of K with Al(Oi-Pr)3 in mixt. isopropanol/benzene, addn. to suspn. of FeCl3 in benzene (molar ratio K/Al(Oi-Pr)3/FeCl3 2:2:1, stirring), refluxing (12 h); sepn. of pptd. KCl (filtration off), removal of solvent (vac.); elem. anal.;	98%

...Expand

: 28227-42-1, 30834-74-3
1,4-di-tert-butyl-1,4-diazabutadiene

: 544-97-8
dimethyl zinc(II)

: 7440-09-7
potassium

: K(1+)*Zn(CH3)((CH3)3CNCHCHNC(CH3)3)(1-)=K[Zn(CH3)((CH3)3CNCHCHNC(CH3)3)]

Conditions

Conditions	Yield
In tetrahydrofuran; pentane N2-atmosphere; stirring (room temp., 16 h); evapn. (vac.), washing (hexanes or Et2O), drying (vac.); elem. anal.;	98%

...Expand

: 191107-87-6
C2B3(N(Si(CH3)3)2)(Si(CH3)3)2(C6H(CH3)4)2

: 7440-09-7
potassium

: 2K(1+)*C2B3(N(Si(CH3)3)2)(Si(CH3)3)2(C6H(CH3)4)2(2-)=K2[C2B3(N(Si(CH3)3)2)(Si(CH3)3)2(C6H(CH3)4)2]

Conditions

Conditions	Yield
In diethyl ether	98%

: 1291-32-3
zirconocene dichloride

: 17455-13-9
18-crown-6 ether

: 7440-09-7
potassium

: (18-crown-6)*K[Cp2ZrCl2]

Conditions

Conditions	Yield
In toluene (N2) Zr complex, K and 18-crown-6 in toluene were stirred for 24 h; pentane was added, ppt. was filtered off; elem. anal.;	98%

...Expand

: 1271-19-8
bis(cyclopentadienyl)titanium dichloride

: 7440-09-7
potassium

: 108-68-9
3,5-Dimethylphenol

: (η5-C5H5)2Ti(3,5-dimethylphenolato)2

Conditions

Conditions	Yield
In tetrahydrofuran byproducts: KCl; anhydrous atmosphere; refluxing K with 3,5-dimethylphenol, then addn. to Ti-complex (molar ratio Ti:phenolate=1:2), refluxing and stirring (12 h, room temp.); KCl filtered off, concentration, recrystn. (THF, hexane); elem. anal.;	97%

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