8.51008 EMD Millipore


TBTU 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethylaminium tetrafluoroborate Novabiochem®. CAS 125700-67-6, molar mass 321.09 g/mol., 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethylaminium tetrafluoroborate Novabiochem®

Synonym: 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethylaminium tetrafluoroborate

  • CAS Number 125700-67-6

  • Linear Formula C₁₁H₁₆BF₄N₅O

  • Molecular Weight 321.09 g/mol

  •  EC Number 423-040-4



brand family   Novabiochem
packaging   100 g in Plastic bottle (8510080100)
  25 g in Plastic bottle (8510080025)
solubility   3 g/l
mp   195 - 199 °C decomposes
shipped in   ambient
storage temp.   Store at +15°C to +25°C.
specifications   Colour (visual): white to slight yellow to beige
  Appearance of substance (visual): powder
  Identity (IR): passes test
  Assay (HPLC, area%): ≥ 98.0 % (a/a)
  Solubility (1 mmole in 2 ml DMF): clearly soluble
  Loss on drying: ≤ 0.5 %
  Water (K. F.): ≤ 0.5 %


Background information

See entry for HBTU (851006). TBTU has been employed to generate 1,2,4-oxadiazoles from carboxylic acids [1].

The product number for this product was previously 01-62-0015.

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Safety Information

HS Code 
2933 99 80
Hazard Statement(s) 
H228: Flammable solid.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
Precautionary Statement(s) 
P210: Keep away from heat.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage class 
4.1A Other explosive hazardous materials
WGK 3 highly water endangering
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Explosive  Explosive
Hazard Symbols 
Irritant  Irritant
Declaration (railroad and road) ADR, RID 
UN 1325 , 4.1, II
Declaration (transport by air) IATA-DGR 
UN 1325 , 4.1, II
Declaration (transport by sea) IMDG-Code 
UN 1325 , 4.1, II
Categories of danger 
explosive, irritant
R Phrase 
R 2-36/37/38
Risk of explosion by shock, friction, fire or other sources of ignition.Irritating to eyes, respiratory system and skin.
S Phrase 
S 15
Keep away from heat.
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