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  • 8.41638 - Trimethyloxonium tetrafluoroborate

8.41638 EMD Millipore

Trimethyloxonium tetrafluoroborate

Trimethyloxonium tetrafluoroborate for synthesis. CAS 420-37-1, pH (H₂O, 20 °C) strongly acid., for synthesis

  • CAS Number 420-37-1

  • Linear Formula C₃H₉BF₄O

  • Molecular Weight 147.9 g/mol

  •  EC Number 206-994-4



Related Categories Biochemicals and Reagents More...
packaging   10 g in Glass bottle (8416380010)
mp   202 - 203 °C (sublimed)
shipped in   ambient
storage temp.   Store at +2°C to +8°C.
specifications   Assay (acidimetric): ≥ 95.0 %
  Identity (IR): passes test

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Safety Information

HS Code 
2942 00 00
Hazard Statement(s) 
H260: In contact with water releases flammable gases which may ignite spontaneously.
H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) 
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.
P402 + P404: Store in a dry place. Store in a closed container.
Storage class 
4.3 Hazardous materials, which set free flammable gases upon contact with water
WGK 3 highly water endangering
Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Symbols 
Corrosive  Corrosive
Declaration (railroad and road) ADR, RID 
UN 3131 , 4.3 (8), I
Declaration (transport by air) IATA-DGR 
UN 3131 , 4.3 (8), I
Declaration (transport by sea) IMDG-Code 
UN 3131 , 4.3 (8), I, Segregation Group: 1 (Acids)
Categories of danger 
R Phrase 
R 34
Causes burns.
S Phrase 
S 26-36/37/39-45
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 accident or if you feel unwell, seek medical advice immediately (show the label where possible).
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