| Identification | More | [Name]
Potassium methoxide | [CAS]
865-33-8 | [Synonyms]
Methanol,potassiumsalt
POTASSIUM METHOXIDE, 0.1 N SOLUTION IN TOLUENE/METHANOL, PURE
Potassium methylate cryst. in methanol
POTASSIUM METHOXIDE SOLUTION, ~25% IN ME THANOL
Potassium methoxide, 30% in methanol
Potassiummethoxide,95-99%
potassium methoxide solution
Kaliummethanolat
POTASSIUM METHOXIDE: 25% IN METHANOL
POTASSIUM METHOXIDE 32% SOLUTION
POTASSIUM METHYLATE 30% IN METHANOL
Potassium methoxide
Potassium methoxide, 5% w/v in methanol
Methoxypotassium
Potassium methoxide, 90+% | [EINECS(EC#)]
212-736-1 | [Molecular Formula]
CH3KO | [MDL Number]
MFCD00012416 | [Molecular Weight]
70.13 | [MOL File]
865-33-8.mol |
| Chemical Properties | Back Directory | [Appearance]
solid | [Melting point ]
-20°C | [Boiling point ]
84°C | [density ]
0.95 g/mL at 20 °C
| [vapor pressure ]
0Pa at 25℃ | [refractive index ]
n20/D 1.37
| [Fp ]
7°C | [storage temp. ]
Flammables area | [solubility ]
Soluble in methanol and ethanol. | [form ]
Liquid | [pka]
15.17[at 20 ℃] | [color ]
Clear colorless | [Specific Gravity]
0.95 | [PH]
12.8 (7g/l, H2O, 20℃) | [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. | [Water Solubility ]
may decompose | [Hydrolytic Sensitivity]
7: reacts slowly with moisture/water | [Sensitive ]
Moisture Sensitive | [BRN ]
3551544 | [Exposure limits]
ACGIH: TWA 200 ppm; STEL 250 ppm (Skin)
OSHA: TWA 200 ppm(260 mg/m3)
NIOSH: IDLH 6000 ppm; TWA 200 ppm(260 mg/m3); STEL 250 ppm(325 mg/m3) | [InChI]
1S/CH3O.K/c1-2;/h1H3;/q-1;+1 | [InChIKey]
BDAWXSQJJCIFIK-UHFFFAOYSA-N | [SMILES]
[K+].C[O-] | [CAS DataBase Reference]
865-33-8(CAS DataBase Reference) | [EPA Substance Registry System]
865-33-8(EPA Substance) |
| Questions And Answer | Back Directory | [Preparation]
The traditional methods for synthesizing potassium methoxide are the alkaline method and the metal method. The alkaline method involves mixing methanol and potassium hydroxide in a batch or continuous process to synthesize potassium methoxide; the metal method involves reacting potassium metal with methanol. |
| Safety Data | Back Directory | [Symbol(GHS) ]
   
GHS02,GHS05,GHS06,GHS08 | [Signal word ]
Danger | [Hazard statements ]
H225-H301+H311+H331-H314-H370 | [Precautionary statements ]
P210-P280-P301+P310+P330-P301+P330+P331-P303+P361+P353-P305+P351+P338+P310 | [Hazard Codes ]
F,T,C | [Risk Statements ]
R11:Highly Flammable.
R14:Reacts violently with water.
R34:Causes burns.
R67:Vapors may cause drowsiness and dizziness.
R65:Harmful: May cause lung damage if swallowed.
R63:Possible risk of harm to the unborn child.
R48/20:Harmful: danger of serious damage to health by prolonged exposure through inhalation .
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R38:Irritating to the skin.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S8:Keep container dry .
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
S46:If swallowed, seek medical advice immediately and show this container or label .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S33:Take precautionary measures against static discharges .
S29:Do not empty into drains .
S25:Avoid contact with eyes . | [RIDADR ]
UN 3274 3/PG 2
| [WGK Germany ]
1
| [F ]
3-10-23 | [Autoignition Temperature]
30 - 50 °C | [TSCA ]
Yes | [REACH Registrations]
Active | [HazardClass ]
4.2 | [PackingGroup ]
II | [HS Code ]
29051900 | [Storage Class]
4.2 - Pyrophoric and self-heating hazardous materials | [Hazard Classifications]
Self-heat. 1
Skin Corr. 1B |
| Hazard Information | Back Directory | [Chemical Properties]
solid | [Uses]
Potassium methoxide is used as a chemical intermediate. It is also used in biodiesel production and in fuel additives. It acts as a catalyst for the preparation of methyl formate and an alkaline catalyst for dimethyl formamide. Further, it is used as versatile reagents in chemical reactions such as condensation, esterification, alkoxylation and etherification, Claisen condensation, Wolf-Kishner reduction and Stobbe reaction. | [Fire Hazard]
Flammable solid, igniting in moist air. Rapid
addition in bulk amount into halogenated
solvents may cause an explosion. Reaction
with arsenic pentafluoride in benzene can
result in explosion (Kolditz 1965). | [Flammability and Explosibility]
Flammable |
|
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