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  • 8.04918 - Potassium tert-butylate

8.04918 EMD Millipore

Potassium tert-butylate

Potassium tert-butylate for synthesis. CAS No. 865-47-4, EC Number 212-740-3., for synthesis

  • CAS Number 865-47-4

  • Linear Formula C₄H₉KO

  • Molecular Weight 112.21 g/mol

  •  EC Number 212-740-3



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packaging   100 g in Glass bottle (8049180100)
  2.5 kg in Metal can (8049182500)
vapor pressure   0.02 hPa (20 °C)
density   1.19 g/cm3 (20 °C)
autoignition temp.   483 °C
mp   256 - 258 °C
pH   13 (5 g/l, H₂O, 20 °C) Hydrolysis
bulk density   500 kg/m3
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (acidimetric): ≥ 98,0 %(m)
  Free KOH: ≤ 1 %(m)
  Identity (IR): conforms

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Safety Information

HS Code 
2905 19 00
Hazard Statement(s) 
H228: Flammable solid.
H314: Causes severe skin burns and eye damage.
EUH014: Reacts violently with water.
Precautionary Statement(s) 
P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
P370 + P378: In case of fire: Use powder for extinction.
P402 + P404: Store in a dry place. Store in a closed container.
Storage class 
4.1B Flammable solid hazardous materials
WGK 1 slightly water endangering
Bases and alcoholates should be diluted if necessary by carefully stirring them into water and then neutralized (protective gloves, fume cupboard!) with hydrochloric acid (Cat. No. 100312). Before placing in container D, check the pH with pH universal indicator strips (Cat. No. 109535).
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Symbols 
Corrosive  Corrosive
Hazard Symbols 
Flammable  Flammable
Declaration (railroad and road) ADR, RID 
UN 2921 , 8 (4.1), I
Declaration (transport by air) IATA-DGR 
UN 2921 , 8 (4.1), I
Declaration (transport by sea) IMDG-Code 
UN 2921 , 8 (4.1), I, Segregation Group: 18 (Alkalis)
Categories of danger 
highly flammable, harmful, corrosive
R Phrase 
R 11-14-35
Highly flammable.Reacts violently with water.Causes severe burns.
S Phrase 
S 8-16-26-36/37/39-43-45
Keep container dry.Keep away from sources of ignition - No smoking.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of fire, use powder extinguisher. Never use water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
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