Potassium bis(trimethylsilyl)amide - 1 M in THF (approximately 22% content) , CAS No.40949-94-8

CAS: 40949-94-8 Cat. No.: P109542 Molecular Weight: 199.48 Beilstein Registry Number: 4006754 EC Number: 609-880-6 PubChem CID: 3251421
AVAILABLE TO ORDER
GRADE & PURITY 1 M in THF (approximately 22% content)
Synonyms
KHMDS
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100ml
P109542-100ml
1
$41.90
500ml
P109542-500ml
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$167.90
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Why this grade

1 M in THF (approximately 22% content) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

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

Specifications

Synonyms
KHMDS
Specifications & Purity
1 M in THF (approximately 22% content)
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Names and Identifiers
Isomeric SMILES C[Si](C)(C)[N-][Si](C)(C)C.[K+]
WGK Germany 3
PubChem CID 3251421
UN Number 3263
Molecular Weight 199.48
Beilstein 4006754

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

29 results found

Lot NumberCertificate TypeDateItem
H2206212Certificate of AnalysisMay 20, 2026 P109542
D2523232Certificate of AnalysisFeb 05, 2026 P109542
L2325009Certificate of AnalysisFeb 05, 2026 P109542
A2314240Certificate of AnalysisJan 20, 2026 P109542
L2530435Certificate of AnalysisDec 23, 2025 P109542
L2530419Certificate of AnalysisDec 23, 2025 P109542
H2515503Certificate of AnalysisJul 22, 2025 P109542
H2515502Certificate of AnalysisJul 22, 2025 P109542
D2402409Certificate of AnalysisApr 18, 2025 P109542
D2523283Certificate of AnalysisApr 16, 2025 P109542
D2524057Certificate of AnalysisApr 16, 2025 P109542
D2523225Certificate of AnalysisApr 16, 2025 P109542
K2428576Certificate of AnalysisNov 22, 2024 P109542
K2428575Certificate of AnalysisNov 22, 2024 P109542
D2402407Certificate of AnalysisMar 04, 2024 P109542
D2402408Certificate of AnalysisMar 04, 2024 P109542
D2402514Certificate of AnalysisMar 04, 2024 P109542
J2320426Certificate of AnalysisOct 11, 2023 P109542
J2320427Certificate of AnalysisOct 11, 2023 P109542
L2031227Certificate of AnalysisJun 09, 2023 P109542
H2206216Certificate of AnalysisMay 12, 2023 P109542
A2314242Certificate of AnalysisJan 02, 2023 P109542
H2206214Certificate of AnalysisJul 28, 2022 P109542
I2320026Certificate of AnalysisJul 28, 2022 P109542
G2312097Certificate of AnalysisJul 28, 2022 P109542
I2101362Certificate of AnalysisJul 14, 2022 P109542
A2214119Certificate of AnalysisDec 22, 2021 P109542
A2213602Certificate of AnalysisDec 22, 2021 P109542
A2213600Certificate of AnalysisDec 22, 2021 P109542

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Chemical and Physical Properties
SolubilityReacts readily with water to form potassium hydroxide and hexamethyldisilazane. Soluble in aromatic hydrocarbons, ether,terahydrofuran, benzene and toluene.
SensitivityMoisture & Air & light sensitive
Flash Point(°F)4℃
Flash Point(°C)4℃
Boil Point(°C)66°C
Documents & Articles
Citations of This Product
References
1. Yulei Wu, Xiaohui Liu, Xiaodong Li, Wenjun Zhang, Hai-Qiao Wang, Junfeng Fang.  (2016)  High-Performance Polymer Solar Cells with Zinc Sulfide-Phenanthroline Derivatives as the Hybrid Cathode Interlayers.  ACS Applied Materials & Interfaces,      [PMID:26757048] [10.1021/acsami.5b10798]
2. Xiaohui Yi, Niamat Ullah, Qianqian Zhao, Jun Xiao, Ningrui Zhang, Shao-Lu Li, Yunxia Hu, Genghao Gong.  (2024)  Fabrication of tight polyamide nanofiltration membrane by using a pyridine-diamine precursor for heavy metal ions removal.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.130424]
Solution Calculators
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