702722

Potassium bis(trimethylsilyl)amide solution

1 M in THF

• Synonym(s): KHMDS, Hexamethyldisilazane potassium salt solution, Potassium hexamethyldisilazide solution
• Linear Formula: [(CH₃)₃Si]₂NK
• CAS Number: 40949-94-8
• Molecular Weight: 199.48
• Beilstein/REAXYS Number: 4006754
• MDL number: MFCD00010330
• UNSPSC Code: 12352111
• PubChem Substance ID: 329762398
• NACRES: NA.22

Properties

• vapor density: 3.2 (vs air)
• Quality Level: 200
• form: liquid
• concentration: 1 M in THF
• density: 0.915 g/mL at 25 °C
• SMILES string: C[Si](C)(C)N([K])[Si](C)(C)C
• InChI: 1S/C6H18NSi2.K/c1-8(2,3)7-9(4,5)6;/h1-6H3;/q-1;+1
• InChI key: IUBQJLUDMLPAGT-UHFFFAOYSA-N

Description

Application

Potassium bis(trimethylsilyl)amide solution (1 M in THF) has been used as an anionic initiator in the polymerization of polyethylene oxide(PEO).

Packaging

The 25 mL Sure/Seal^™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

Safety Information

• pictograms: GHS02,GHS08,GHS05,GHS07
• signalword: Danger
• hcodes: H225,H302,H314,H335,H336,H351
• pcodes: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 3
• target_organs: Central nervous system, Respiratory system
• supp_hazards: EUH019
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: -2.0 °F
• flash_point_c: -18.9 °C
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter