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HomeProduct name listTetramethylammonium borohydride

Tetramethylammonium borohydride

Synonym(s):NSC 164901;TMAB

  • CAS NO.:16883-45-7
  • Empirical Formula: C4H16BN
  • Molecular Weight: 88.99
  • MDL number: MFCD00011778
  • EINECS: 240-917-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-06-08 17:06:35
Tetramethylammonium borohydride Structural

What is Tetramethylammonium borohydride?

The Uses of Tetramethylammonium borohydride

Reactant for:

  • Preparation of iridium tetrahydride complexes bearing a tridentate pincer-type bis(phosphino)silyl ligand
  • Reduction reactions (reducing agent)

Purification Methods

Recrystallisation of the borohydride from H2O three times yields ca 94% pure compound. Dry in high vacuum at 100o for 3hours. The solubility in H2O is 48% (20o), 61% (40o), and in EtOH 0.5% (25o) and MeCN 0.4% (25o). It decomposes slowly in a vacuum at 150o, but rapidly at 250o. The rate of hydrolysis of Me4N.BH4 (5.8M) in H2O at 40o is constant over a period of 100hours at 0.04% of original wt/hour. The rate decreases to 0.02%/hour in the presence of Me4NOH (5% of the wt of Me4N.BH4). [Banus et al. J Am Chem Soc 74 2346 1952, Beilstein 4 IV 148.]

Properties of Tetramethylammonium borohydride

Melting point: 150°C (dec.)
Density  0,813 g/cm3
storage temp.  2-8°C
Water Solubility  almost transparency in Water
form  crystal
color  white
Specific Gravity 0.813
Sensitive  Moisture Sensitive
BRN  3684968
EPA Substance Registry System Methanaminium, N,N,N-trimethyl-, tetrahydroborate(1-) (16883-45-7)

Safety information for Tetramethylammonium borohydride

Signal word Danger
Pictogram(s)
ghs
Flame
Flammables
GHS02
ghs
Skull and Crossbones
Acute Toxicity
GHS06
GHS Hazard Statements H261:Substances And Mixtures Which, In Contact With Water,Emit Flammable Gases
H301:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
Precautionary Statement Codes P223:Keep away from any possible contact with water, because of violent reaction and possible flash fire.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P231+P232:Handle under inert gas. Protect from moisture.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Tetramethylammonium borohydride

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