Potassium methoxide supplier

Name
Potassium methoxide
EINECS 212-736-1
CAS No. 865-33-8
Article Data21
CAS DataBase
Density 0.95 g/mL at 20 °C
Solubility may decompose in water
Melting Point -20 °C
Formula CH₃KO
Boiling Point 48.1 °C at 760 mmHg
Molecular Weight 70.1325
Flash Point 11.1 °C
Transport Information UN 3274 3/PG 2
Appearance solid
Safety 8-16-26-43-45-62-46-36/37/39-33-29-25
Risk Codes 11-14-34-67-65-63-48/20-39/23/24/25-38
Molecular Structure
Hazard Symbols F, T, C
Synonyms Methanol,potassium salt (8CI,9CI);Potassium methoxide (6CI,7CI);Feldalat KM;Methoxypotassium;
PSA 23.06000
LogP 0.04670

Synthetic route

: 67-56-1
methanol

: 100-67-4
potassium phenolate

A: 865-33-8
potassium methanolate

B: 108-95-2
phenol

Conditions

Conditions	Yield
With 1-chloro-2,4-dinitro-benzene at 40℃; Equilibrium constant; Thermodynamic data; further temperatures, ΔH(activ.), ΔG(activ.), ΔS(activ.);

...Expand

: 67-56-1
methanol

: 36294-21-0
potassium 2-naphthoxide

A: 865-33-8
potassium methanolate

B: 135-19-3
β-naphthol

Conditions

Conditions	Yield
With 1-chloro-2,4-dinitro-benzene at 40℃; Equilibrium constant; Thermodynamic data; further temperatures, ΔH(activ.), ΔG(activ.), ΔS(activ.);

...Expand

: 67-56-1
methanol

: 19402-71-2
potassium 1-naphtholate

A: 90-15-3
α-naphthol

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With 1-chloro-2,4-dinitro-benzene at 40℃; Equilibrium constant; Thermodynamic data; further temperatures, ΔH(activ.), ΔG(activ.), ΔS(activ.);

...Expand

: C13H14N3O5(1-)*K(1+)

A: 39139-79-2
1-dimethylamino-2,4-dinitronaphthalene

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant; var. temperatures;

: C13H14N3O5(1-)*K(1+)

A: 39139-79-2
1-dimethylamino-2,4-dinitronaphthalene

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant; var. temperatures;

: C15H18N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: Diethyl-(3-methoxy-2,4-dinitro-naphthalen-1-yl)-amine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: C15H18N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: Diethyl-(3-methoxy-2,4-dinitro-naphthalen-1-yl)-amine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: C16H20N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: Butyl-(3-methoxy-2,4-dinitro-naphthalen-1-yl)-methyl-amine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: C16H18N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: 1-(3-Methoxy-2,4-dinitro-naphthalen-1-yl)-piperidine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: C16H20N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: Butyl-(3-methoxy-2,4-dinitro-naphthalen-1-yl)-methyl-amine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: C16H18N3O5(1-)*K(1+)

A: 865-33-8
potassium methanolate

B: 1-(3-Methoxy-2,4-dinitro-naphthalen-1-yl)-piperidine

Conditions

Conditions	Yield
In dimethyl sulfoxide at 25℃; Equilibrium constant; Rate constant;

: Kalium-4-cyan-2,6-dinitro-1,1-dimethoxy-cyclohexadienid

A: 19018-96-3
2,6-dinitro-4-cyanoanisole

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
In methanol at 25℃; Equilibrium constant;

: C10H11N2O8(1-)*K(1+)

A: 38102-00-0
2-methoxy-3,5-dinitro-benzoic acid methyl ester

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With (decomposition) In methanol at 25℃; Rate constant; Equilibrium constant;

: 67-56-1
methanol

: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With potassium hydroxide In water at 20℃; Equilibrium constant; var. of temp., amount of water;
With potassium In Petroleum ether at 60℃; Microwave irradiation; Inert atmosphere;

: 67-56-1
methanol

K2CO3: K2CO3

: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
at 20℃;

: 124-41-4
sodium methylate

K2CO3: K2CO3

: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With methanol at 20℃;

K2CO3: K2CO3

calcium methylate: calcium methylate

: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With methanol at 20℃;

: 503-30-0
trimethylene oxide

: bis(15-crown-5)potassium potasside

A: 74-85-1
ethene

B: 865-33-8
potassium methanolate

C: 16872-93-8
potassium propylate

D: potassium tetra(ethylene glycoxide) vinyl ether

Conditions

Conditions	Yield
In tetrahydrofuran at 25℃; Product distribution; Further Variations:; Temperatures; Decomposition;

...Expand

: 67-56-1
methanol

: 7440-09-7
potassium

: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
In methanol byproducts: H; dissolving of K in CH3OH, violent reactn.;;
In methanol byproducts: H; dissolving of K in CH3OH, violent reactn.;;
In tetrahydrofuran Inert atmosphere; Schlenk technique; Glovebox;

: 67-56-1
methanol

: 3K(1+)*H(1+)*MnO(O2)3(4-)=K3H{MnO(O2)3}

A: 2K(1+)*2H(1+)*MnO(O2)3(4-)=K2H2{MnO(O2)3}

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
at -20°C;

...Expand

: (2,3-dihydro-2-methyl-1-(trimethylsilyl)-1H-1,3,2-diazaborolyl)potassium

A: 129920-28-1
2,3-dihydro-2-methyl-1-(trimethylsilyl)-1H-1,3,2-diazaborole

B: 865-33-8
potassium methanolate

Conditions

Conditions	Yield
With CH3OH In diethyl ether under N2, -78°C, warmed to room temp.; solvent pumped off, distn.;	A 18-23 B n/a

: 865-33-8
potassium methanolate

: 350-46-9
4-Fluoronitrobenzene

: 100-17-4
para-methoxynitrobenzene

Conditions

Conditions	Yield
In various solvent(s) at 125℃; for 0.0583333h; microwave irradiation;	100%

: [Cp2Nb2](η(10),μ-C10H8)(μ-Cl)(μ-H)

: 865-33-8
potassium methanolate

: (C5H4)2Nb2(C5H5)2(H)(OCH3)

Conditions

Conditions	Yield
In toluene equimolar amts. of Nb complex and CH3OK heated in toluene at 100°C in standard Schlenk-type app. for 5 h; evapd. in vacuo, extd. (hot hexane), crystd. from hexane;	100%
In toluene (evacuated system); mixt. heated at 100°C for 1 h; evapd. solvent; extd. (hexane); elem. anal.;	90%
In toluene inert atmosphere; 100°C, 5 h; solvent removal, extn. (ether), evapn.; elem. anal.;	>99

: 146948-51-8
3-fluoro-2-methyl-6-nitro-benzoic acid

: 865-33-8
potassium methanolate

: 881415-49-2
3-Methoxy-2-methyl-6-nitro-benzoic acid

Conditions

Conditions	Yield
Stage #1: 3-fluoro-2-methyl-6-nitro-benzoic acid; potassium methanolate In tetrahydrofuran; methanol at 100℃; for 2h; Stage #2: With hydrogenchloride; water In tetrahydrofuran; methanol	100%

: 67-56-1
methanol

: 1067892-75-4
2-methylthio-4-(morpholin-4-yl)-6-phenylethynyl-pyrimidine-5-carbaldehyde

: 865-33-8
potassium methanolate

: 1067892-94-7
(7Z)-7-benzylidene-5-methoxy-2-methylthio-4-(morpholin-4-yl)-5,7-dihydrofuro[3,4-d]pyrimidine

Conditions

Conditions	Yield
In 1,2-dichloro-ethane for 0.0833333h; Microwave irradiation; regioselective reaction;	100%

...Expand

: 456-47-3
3-fluoro-benzenemethanol

: 865-33-8
potassium methanolate

: 455-68-5
methyl 3-fluorobenzoate

Conditions

Conditions	Yield
With tellurium; bismuth (III) nitrate pentahydrate; 5%-palladium/activated carbon; oxygen In methanol at 60℃; under 760.051 Torr; for 8h;	100%

: 865-33-8
potassium methanolate

: 73183-34-3
bis(pinacol)diborane

: C13H27B2O5(1-)*K(1+)

Conditions

Conditions	Yield
In methanol Schlenk technique;	100%

: 67-56-1
methanol

: 50-00-0
formaldehyd

: 865-33-8
potassium methanolate

: 122555-91-3
1,4,7-tris-tert-butoxycarbonylmethyl-1,4,7,10-tetraazacyclododecane

: tri-tert-butyl ester 10-methoxymethyl-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid

Conditions

Conditions	Yield
at 20℃; for 80h; Product distribution / selectivity;	99.6%

...Expand

: 1843-42-1
2-(β-hydroxyethylthio)1,3,2-oxathiastibolane

: 865-33-8
potassium methanolate

: 130429-33-3
2-(β-hydroxyethylthio)1,3,2-oxathiastibolane(K)

Conditions

Conditions	Yield
In methanol A soln. of KOMe is added to a suspn. of the Sb-compd., mixt. is refluxed for about 1 h.; Excess CH3OH is removed under vac., product is washed with CH2Cl2, elem. anal.;	99.56%

: {HO(CH2)2S(CH2)2O}Sb{O(CH2)2S(CH2)2O}

: 865-33-8
potassium methanolate

: K(1+)*Sb{O(CH2)2S(CH2)2O}2(1-)=KSb{O(CH2)2S(CH2)2O}2

Conditions

Conditions	Yield
In methanol anhydrous conditions; molar ratio 1 : 1, refluxing (1 h); solvent removal (reduced pressure, pptn.), recrystn. (DMSO/benzene); elem. anal.;	99%

: 860393-33-5
H{Sb(OC(CH3)2C(CH3)2O)2}

: 865-33-8
potassium methanolate

: K(1+)*Sb(OC(CH3)2C(CH3)2O)2(1-) = K{Sb(OC(CH3)2C(CH3)2O)2}

Conditions

Conditions	Yield
In methanol anhyd. conditions, molar ratio 1:1, refluxed 1 h; solvent removed in vac., recrystd. (DMSO/dichlorometane); elem. anal., mol.wt. detn.;	99%

: Cl2Sn{Nb(OC3H7)6}2

: 865-33-8
potassium methanolate

: (CH3O)2Sn{Nb(OC3H7)6}2

Conditions

Conditions	Yield
In benzene byproducts: KCl; rigorously anhydrous conditions; stoichiometric amounts;; elem. anal.;;	99%

: N1,N4-bis-(Z-Trp)benzene-1,4-diamine

: 865-33-8
potassium methanolate

: C32H32N6O6

Conditions

Conditions	Yield
In methanol at 15℃; for 0.0833333h;	99%

: 5-bromo-6-fluoro-N,N-dimethylpyridin-2-amine

: 865-33-8
potassium methanolate

: 5-bromo-6-methoxy-N,N-dimethylpyridin-2-amine

Conditions

Conditions	Yield
In methanol at 71℃; for 2.16667h; Large scale;	99%
In methanol for 2.5h; Reflux;	95%

: 865-33-8
potassium methanolate

: 1-methyl-2-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: 1-methyl-2-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 865-33-8
potassium methanolate

: 1,2-dimethyl-3-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: 1,2-dimethyl-3-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 865-33-8
potassium methanolate

: (3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: (4,4-dimethoxy-3-(methoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
Stage #1: potassium methanolate In 1,2-dimethoxyethane at -10℃; for 0.0833333h; Inert atmosphere; Schlenk technique; Stage #2: (3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene In 1,2-dimethoxyethane at -10℃; for 22h; Inert atmosphere; Schlenk technique;	99%

: 865-33-8
potassium methanolate

: 1-chloro-2-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: 1-chloro-2-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 865-33-8
potassium methanolate

: C12H9F3O

: 1-methoxy-2-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 1589544-77-3
1-methoxy-4-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: 865-33-8
potassium methanolate

: 1-methoxy-4-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 1589544-78-4
1-chloro-4-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: 865-33-8
potassium methanolate

: 1-chloro-4-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 865-33-8
potassium methanolate

: 4-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)-1,1'-biphenyl

: 4-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)-1,1'-biphenyl

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 1589544-87-5
1-(3-(trifluoromethyl)but-3-en-1-yn-1-yl)naphthalene

: 865-33-8
potassium methanolate

: 1-(3-(trimethoxymethyl)but-3-en-1-yn-1-yl)naphthalene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Inert atmosphere; Schlenk technique; chemoselective reaction;	99%

: 865-33-8
potassium methanolate

: 126248-77-9
bis(2,2-dimethylpropanoic) selenoanhydride

: 127678-35-7
potassium 1,1-dimethylethanecarboselenoate

Conditions

Conditions	Yield
In diethyl ether; hexane at 0℃; for 3h;	98%

: {HO(CH2)2O(CH2)2O}Sb{O(CH2)2O(CH2)2O}

: 865-33-8
potassium methanolate

: K(1+)*Sb{O(CH2)2O(CH2)2O}2(1-)=KSb{O(CH2)2O(CH2)2O}2

Conditions

Conditions	Yield
In methanol anhydrous conditions; molar ratio 1 : 1, refluxing (1 h); solvent removal (reduced pressure, pptn.), recrystn. (DMSO/benzene); elem. anal.;	98%

: H(1+)*(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)(1-)=H[(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)]

: 865-33-8
potassium methanolate

: CH3OHK(1+)*(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)(1-)=CH3OHK[(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)]

Conditions

Conditions	Yield
In methanol Al-compd.:alkali-compd. molar ratio was 1:1, alcoholate-compd. in MeOH was added to MeOH suspn. of Al-compd., reflux for 1.5 h; MeOH was removed in vac., recrystn. from DMSO:CH2Cl2 (6:1), elem. anal.;	98%

: H(1+)*(CH3COCHCOCH3)2Al(OC(CH3)2CH2CH(CH3)O)(1-)=H[(CH3COCHCOCH3)2Al(OC(CH3)2CH2CH(CH3)O)]

: 865-33-8
potassium methanolate

: CH3OHK(1+)*(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)(1-)=CH3OHK[(CH3COCHCOCH3)2Al(OC(CH3)2C(CH3)2O)]

Conditions

Conditions	Yield
In methanol Al-compd.:alkali-compd. molar ratio was 1:1, alcoholate-compd. in MeOH was added to MeOH suspn. of Al-compd., reflux for 1.5 h; MeOH was removed in vac., recrystn. from DMSO:CH2Cl2 (6:1), elem. anal.;	98%

: C40H89CeClO13Si3

: 865-33-8
potassium methanolate

: C45H100CeO15Si3

Conditions

Conditions	Yield
In diethyl ether at 20℃;	98%

: 865-33-8
potassium methanolate

: (3-(trifluoromethyl)but-3-en-1-yn-1-yl)benzene

: (3-(trimethoxymethyl)but-3-en-1-yn-1-yl)benzene

Conditions

Conditions	Yield
In tetrahydrofuran at 30℃; for 18h; Temperature; Inert atmosphere; Schlenk technique; chemoselective reaction;	98%

: 21505-24-8
hexachlorotropone

: 865-33-8
potassium methanolate

: 51877-62-4
Pentachlorbenzoesaeure-methylester

Conditions

Conditions	Yield
In toluene at 0℃; for 2h;	97%

: 865-33-8
potassium methanolate

: germanium dioxide

: 120-80-9
benzene-1,2-diol

: 112712-64-8
tris(1,2-benzenediolato-O,O′)germanate

Conditions

Conditions	Yield
With 2,3-butanediol In methanol (N2); added a soln. of CH3OK and than a soln. of catechol and 2,3-butanediol to suspn. of GeO2; refluxed for 2 h; evapd.; washed with ether; dried in vacuo; IR;	97%
In methanol soln. of MeOK is added to suspension of GeO2 under N2, soln. of catechol is added at room temp., mixt. is stirred and heated under reflux for 72 h; evapn., washing (ether);	95%

...Expand

Potassium methoxide Chemical Properties

IUPAC Name: Potassium methanolate
Synonyms of Potassium methylate (CAS NO.865-33-8): Methanol, potassium salt ; Methanol, potassium salt (1:1) ; Potassium methanolate
CAS NO: 865-33-8
Molecular Formula: CH₃KO
Molecular Weight : 70.1322
Molecular Structure:
EINECS: 212-736-1
H bond acceptors: 1
H bond donors: 1
Density: 0.95 g/mL at 20 °C
Freely Rotating Bonds: 0
Polar Surface Area: 20.23 Å²
Flash Point: 11.1 °C
Enthalpy of Vaporization: 35.21 kJ/mol
Boiling Point: 48.1 °C at 760 mmHg
Vapour Pressure: 265 mmHg at 25°C
Melting Point: -20°C
Storage temp: Flammables area
Water Solubility: may decompose
Sensitive: Moisture Sensitive
Form: Potassium methylate (CAS NO.865-33-8) is solid.
Stability: Stable. Reacts violently with water. Moisture sensitive. Absorbs carbon dioxide from the air. Incompatible with acids, strong oxidizing agents, acid chlorides, acid anhydrides, alkali metals.

Potassium methoxide Uses

Potassium methylate (CAS NO.865-33-8) is used as a condensing agent, a catalyst for production of Methyl formate, alkaline catalyst for Dimethyl formamide.It can also be used as pharmaceutical raw material.

Potassium methoxide Safety Profile

Hazard Codes: F, Toxic T, Corrosive C
Risk Statements: 11-14-34-67-65-63-48/20-39/23/24/25-38
R11: Highly flammable.
R14 : Reacts violently with water.
R34: Causes burns.
R38: Irritating to skin.
R63: Possible risk of harm to the unborn child.
R65: Harmful: may cause lung damage if swallowed.
R67: Vapours may cause drowsiness and dizziness.
R39/23/24/25: Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed
R48/20: Harmful: danger of serious damage to health by prolonged exposure through inhalation
Safety Statements: 8-16-26-43-45-62-46-36/37/39-33-29-25
S8: eep container dry.
S16: Keep away from sources of ignition.
S25: Avoid contact with eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S29: Do not empty into drains.
S33: Take precautionary measures against static discharges.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S43: In case of fire use ... (there follows the type of fire-fighting equipment to be used.)
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S46: If swallowed, seek medical advice immediately and show this container or label.
S62: If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
RIDADR: UN 3274 3/PG 2
WGK Germany: 1
F: 3-10-23
TSCA: Yes
HazardClass: 4.2
PackingGroup: II
HS Code: 29051900
Ignites in moist air. When heated to decomposition it emits toxic fumes of K₂O.

Product Name

Potassium methoxide

Synthetic route

Potassium methoxide Chemical Properties

Potassium methoxide Uses

Potassium methoxide Safety Profile

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