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44143 Potassium bis(trimethylsilyl)amide, 15% w/w in toluene, packaged under Argon in resealable ChemSeal™ bottles

CAS Number
40949-94-8
Synonyms
Potassium hexamethyldisilazide

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Bulk/Specialty

Potassium bis(trimethylsilyl)amide, 15% w/w in toluene, packaged under Argon in resealable ChemSeal™ bottles

MDL
MFCD00010330
EINECS
424-100-2

Chemical Properties

Formula
C6H18KNSi2
Formula Weight
199.49
Form
Liquid
Flash Point
7°(44°F)
Density
0.881
Refractive Index
1.4920
Storage & Sensitivity
Moisture Sensitive. Air Sensitive. Store under Argon. Ambient temperatures.
Solubility
Reacts violently with water.

Applications

Strong base used in the alkylation carbonyl compounds. As an anionic initiator used in the preparation of poly(ethylene oxide). Sterically hindered base employed in selective cyclization reactions. Also used in the preparation of lanthanide complexes.

Notes

Protect from humidity and water.

Literature References

Sakya S. Sen.; Jakob Hey.; Regine Herbst-Irmer.; Herbert W. Roesky and Dietmar Stalke. Striking Stability of a Substituted Silicon(II) Bis(trimethylsilyl)amide and the Facile Si-Me Bond Cleavage without a Transition Metal Catalyst.J. Am. Chem. Soc.2011,133(31), 12311-12316.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H302-H333-H314-H318-H361-H336-H373-H304

Highly flammable liquid and vapour. Harmful if swallowed. May be harmful if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage. Suspected of damaging fertility or the unborn child. May cause drowsiness or dizziness. May cause damage to organs through prolonged or repeated exposure. May be fatal if swallowed and enters airways.

Precautionary Statements: P210-P301+P310a-P303+P361+P353-P305+P351+P338-P405-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF SWALLOWED: Immediately call a POISON CENTER/doctor. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
4006754
Hazard Class
3
Packing Group
II
Harmonized Tariff Code
2931.90
TSCA
No

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