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Postion:Product Catalog >Organic Chemistry>Organometallic compounds>Organolithium>Lithium bis(trimethylsilyl)amide
Lithium bis(trimethylsilyl)amide
  • Lithium bis(trimethylsilyl)amide

Lithium bis(trimethylsilyl)amide NEW

Price $50 $1
Package 1KG 1000KG
Min. Order: 1KG
Supply Ability: g-kg-tons, free sample is available
Update Time: 2023-12-23

Product Details

Product Name: Lithium bis(trimethylsilyl)amide CAS No.: 4039-32-1
Min. Order: 1KG Purity: 99%
Supply Ability: g-kg-tons, free sample is available Release date: 2023/12/23
Lead time: In stock Packaging: bottle/drum/bucket/IBC, as request.
Delivery: By sea, by air, by express Origin: Manufacturer

1. Product information

Product Name:Lithium bis(trimethylsilyl)amide
Synonyms:1,1,1,3,3,3-HEXAMETHYLDISILAZAN LITHIUMSALZ;1,1,1,3,3,3-HEXAMETHYLDISILAZANE LITHIUM SALT;HEXAMETHYLDISILAZANE LITHIUM SALT;LHMDS;LIHMDS;LITHIUM HEXAMETHYLDISILAZANE;LITHIUM HEXAMETHYLDISILAZIDE;LITHIUM-BIS-(TRIMETHYLSILYL)-AMID
CAS:4039-32-1
MF:C6H18LiNSi2
MW:167.33
EINECS:223-725-6
Product Categories:Classes of Metal Compounds;Li (Lithium) Compounds;Si (Classes of Silicon Compounds);Silazanes;Silicon Compounds (for Synthesis);Si-N Compounds;Synthetic Organic Chemistry;Typical Metal Compounds
Mol File:4039-32-1.mol
Article illustration

Lithium bis(trimethylsilyl)amide Chemical Properties
Melting point 73°C
Boiling point 55-56 °C
density 0.860 g/mL at 25 °C (lit.)
refractive index n20/D 1.425(lit.)
Fp 48 °F
storage temp. Store below +30°C.
solubility hydrolysis
form Powder
color White
Specific Gravity0.716
Water Solubility hydrolysis
Sensitive Air & Moisture Sensitive
Hydrolytic Sensitivity8: reacts rapidly with moisture, water, protic solvents
BRN 3567910
Exposure limitsACGIH: TWA 50 ppm; STEL 100 ppm (Skin)
OSHA: TWA 200 ppm(590 mg/m3)
NIOSH: IDLH 2000 ppm; TWA 200 ppm(590 mg/m3); STEL 250 ppm(735 mg/m3)
InChIKeyYNESATAKKCNGOF-UHFFFAOYSA-N
CAS DataBase Reference4039-32-1(CAS DataBase Reference)
EPA Substance Registry SystemSilanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, lithium salt (4039-32-1)

Safety Information
Hazard Codes F,C,N
Risk Statements 11-34-48/20-63-65-67-51/53-35-20-62-14-40-37-19
Safety Statements 9-16-26-29-33-36/37/39-45-61-62-57-43
RIDADR UN 2925 4.1/PG 2
WGK Germany 3
10-23
TSCA Yes
HazardClass 4.3
PackingGroup II
HS Code 29319090



Lithium bis(trimethylsilyl)amide Usage And Synthesis
Chemical Propertieslight yellow to yellow crystalline powder
Physical propertiesdistillable low-melting solid; mp 70–72 °C, bp 115 °C/1mmHg. LHMDS is a cyclic trimer in the solid state,3 whereas in benzene solution it exists in a monomer–dimer equilibrium. LHMDS exists as a tetramer-dimer mixture in hydrocarbons and as a dimer-monomer mixture in THF and ether. Treatment of LHMDS with trialkylamines increases the monomer concentration, whereas the use of diamines affords exclusively the corresponding chelated monomer. LHMDS is less soluble, less basic, more stable, and much less sensitive to air compared to lithium diisopropylamide. pKa 29.5 (THF, 27 °C).
UsesLithium bis(trimethylsilyl)amide is used as nonnucleophilic base to generate kinetic ketone and ester enolates. It is considerably more selective than LDA and undesired reductions (e.g., of nonenolizable ketones observed in the case of LDA) can be avoided by using LHMDS.
UsesLithium Hexamethyldisilazide is widely used as strong nonnucleophilic base
UsesLithium bis(trimethylsilyl)amide is a base used in preparation of dienes and enolates. It is used to catalyze the addition of phosphine P-H bonds to carbodiimides leading to phosphaguanidines. Lithium bis(trimethylsilyl)amide is also used in a novel three-step synthesis of disubstituted 1,2,5-thiadiazoles.
PreparationIt is conveniently prepared by the reaction of hexamethyldisilazane with n-butyllithium in hexane. For most uses the hexane is then evaporated and replaced with THF.
General DescriptionThis product, 0.5 M in 2-methyltetrahydrofuran aligns with Safer Solvents and Auxiliaries, Use of Renewable Feedstocks and Inherently Safer Chemistry for Accident Prevention.
Flammability and ExplosibilityHighly flammable


2. Packaging

For powders: normal is 25kgs/Drum or bag, or larger/smaller package as request.

For liquids: normal 25kgs/drum, 180-300kgs/bucket, or IBC, determined by the nature of the product. 

                     Or smaller package 1kg/bottle, 10kgs/bottle as request. 

Article illustrationArticle illustration

3. Shipping

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4. Contact information

For more details, pls contact us freely.

Email address : elin@fdachem.com

Mob: 86 13613820652 

WhatsApp/Skype/Wechat/LINE: 86 13613820652

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Company Profile Introduction

Henan Fengda Chemical Co., Ltd. is located in the High-tech Development Zone of Henan Province. Specializing in the production and sales of various fine chemical products required for industrial production, including chemical raw materials, organic raw materials, petrochemicals, chemical reagents, solvents, catalysts, and additives, etc.

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  • Since: 2023-02-10
  • Address: Room 01, 2288 E05, Building 14, East Henan University, Science and Technology Park, 279 Xisanhuan Ro
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