Product #: 300003
KHMDS/THF 20%
Formula:

C6H18KNSi2


Formula Weight: 199.49 g/mol
CAS #: 40949-94-8
EINECS: Not Listed
Alcoholate Khmds
Density

0.898 g/ml @ 19 °C

Boiling Point

66°C for THF

Flash Point

-24.7 °C

Physical Properties
Physical Form
Liquid
Appearance
Colorless to amber liquid
Solubility
Potassium hexamethyldisilazane is soluble in aromatic hydrocarbons and ethers. KHMDS is also available as a toluene solution.
Application
Strong base for deprotonations or base catalyzed reactions. Base for Wittig reactions. Superbase component, used with alkyl lithium.
Analysis Method
Base titration for concentration. Modified Karl Fisher for hydroxide/carbonate content. GC for isoprene content.
Storage & Shipping
Shelf Life
Four years in unopened, original packaging. Based upon stability testing.
Storage / Stability
Reacts readily with water to form potassium hydroxide and hexamethyldisilazane (HMDS). HMDS will further hydrolyze, generating ammonia. KHMDS can hydrolyze upon exposure to moist air forming a cloudy solution. KHMDS reacts with CO2.
Packaging
  • 32 oz bottle containing 500g KHMDS 20% in THF
  • 5 gallon drum containing 15 Kg KHMDS 20% in THF
  • 55 gallon drum containing 160 Kg KHMDS 20% in THF
Shipping
  • UN2920, PGI, 8(3)
  • Corrosive liquid, flammable, n.o.s. (contains: potassium hexamethyldisilazane, 2-methyl-2-butene, tetrahydrofuran )
Safety & Service
Health & Safety

See product MSDS

Technical Service
Available for all Callery products. Please contact your local representative for more details.
Notes
Product Notes

High concentration, non-corrosive, custom packaging available.

Related Products