CAS 999-97-3

Esametildisilazano

Descrizione:

Esametildisilazano (HMDS) è un composto chimico con la formula (CH₃)₃Si-NH-Si(CH₃)₃. È un liquido incolore e volatile con un odore caratteristico simile a quello delle ammine. L'HMDS è utilizzato principalmente come agente silylante nella sintesi organica e come reagente nella preparazione di vari composti contenenti silicio. La sua struttura presenta due gruppi trimetilsililici attaccati a un atomo di azoto, il che contribuisce alla sua reattività e utilità nella modifica delle superfici, in particolare nel campo della cromatografia e della scienza dei materiali. L'HMDS è noto per la sua capacità di migliorare la stabilità e la volatilità di alcuni composti, rendendolo prezioso nella chimica analitica. È anche utilizzato nell'industria dei semiconduttori per il trattamento delle superfici e la passivazione. Sebbene l'HMDS sia generalmente considerato a bassa tossicità, deve essere maneggiato con cura a causa della sua infiammabilità e delle potenziali proprietà irritanti. Si raccomandano misure di sicurezza adeguate, incluso l'uso di dispositivi di protezione individuale, quando si lavora con questa sostanza.

Formula: C₆H₁₉NSi₂

InChI: InChI=1S/C6H19NSi2/c1-8(2,3)7-9(4,5)6/h7H,1-6H3

InChI key: InChIKey=FFUAGWLWBBFQJT-UHFFFAOYSA-N

SMILES: N([Si](C)(C)C)[Si](C)(C)C

Sinonimi:

• 1,1,1,3,3,3-Hexamethyldisilazan
• 1,1,1,3,3,3-Hexamethyldisilazane
• 1,1,1,3,3,3-Hexametildisilazano
• 1,1,1-Trimethyl-N-(trimethylsilyl)silanamine
• 12058-1A
• A 166
• A 166 (silazane)
• Bis(trimethylsilyl)amine
• Di(trimethylsilyl)amine
• Disilazane, 1,1,1,3,3,3-hexamethyl-
• Dn-L 69
• Dow Corning 4-2839
• Dynasylan HMDS
• H 0089
• HMDS (silazane)
• Hexamethyldisilazane
• Hexamethyldisilylamine
• Hexamethylsilazane
• Hmd 3
• Hmds
• Hmds 1
• Hmds 3
• Ls 7150
• Nsc 93895
• OAP
• SE 31 (silazane)
• Se 31
• Sih 6110.1
• Silazan HMN
• Sz 31
• Sz 6079
• Tsl 8802
• Tsr 8802
• Z 6079
• [Dimethyl-(trimethylsilylamino)silyl]methane
• Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-
• 1,1,1,3,3,3,-HEXAMETHYLDISILA-
• 1,1,1,3,3,3-hexamethyl-disilazan
• hexamethyldisilazane(hmds)
• 1,1,1,3,3,3-Hexamithyl disilazane
• ((CH3)3Si)2NH
• Trimethyl-N-(trimethylsilyl)silanamine
• SILAZANE HMN
• tsl8802
• hexamethyl disilizane
• LABOTEST-BB LT01408762
• 1,1,1-trimethyl-n-(trimethylsilyl)-silanamin

1,1,1,3,3,3-Hexamethyldisilazane

CAS: 999-97-3

Formula: C₆H₁₉NSi₂

Purezza: >96.0%(GC)

Colore e forma: Colorless to Almost colorless clear liquid

Peso molecolare: 161.40

Ref: 3B-H0089

Hexamethyldisilazane, Electronic grade, 99+%

CAS: 999-97-3

Hexamethyldisilazane is used as a solvent in organic synthesis and organometallic chemistry. It is often used as an adhesion promoter for photoresist in photolithography. Further, it is used for the preparation of trimethylsilyl ethers from hydroxy compounds. It is used as an alternative to critical

Formula: C₆H₁₉NSi₂

Purezza: 99+%

Colore e forma: Clear colorless, Liquid

Peso molecolare: 161.40

Ref: 02-L16519

Hexamethyldisilazane, 98+%

CAS: 999-97-3

Hexamethyldisilazane is used as a solvent in organic synthesis and organometallic chemistry. It is often used as an adhesion promoter for photoresist in photolithography. Further, it is used for the preparation of trimethylsilyl ethers from hydroxy compounds. It is used as an alternative to critical

Formula: C₆H₁₉NSi₂

Purezza: 98+%

Colore e forma: Liquid, Clear colorless to pale yellow

Peso molecolare: 161.40

Ref: 02-A15139

Hexamethyldisilazane, min. 97%

CAS: 999-97-3

Hexamethyldisilazane, min. 97%

Formula: (CH₃)₃SiNHSi(CH₃)₃

Purezza: min. 97%

Colore e forma: colorless liq.

Peso molecolare: 161.40

Ref: 08-93-1413

Hexamethyldisilazane

CAS: 999-97-3

Formula: C₆H₁₉NSi₂

Purezza: (GC) ≥ 98.0%

Colore e forma: Clear, colourless liquid

Peso molecolare: 161.40

Ref: 7W-GK7882

Hexamethyldisilazane

CAS: 999-97-3

Hexamethyldisilazane

Formula: C₆H₁₉NSi₂

Purezza: 98%

Colore e forma: clear.colourless liquid

Peso molecolare: 161.39275g/mol

Ref: 54-OR3890

Hexamethyldisilazane

CAS: 999-97-3

S09625 - Hexamethyldisilazane

Formula: C₆H₁₉NSi₂

Purezza: 98%

Colore e forma: Liquid, Clear Liquid

Peso molecolare: 161.395

Ref: 10-S09625

Hexamethyldisilazane

CAS: 999-97-3

Formula: C₆H₁₉NSi₂

Peso molecolare: 161.40

Ref: 4Z-S-154001

Hexamethyldisilazane

Prodotto controllato

CAS: 999-97-3

Applications Hexamethyldisilazane is used in the preparation of 5-azacytidine, an antineoplastic drug. Also used in the preparation of β3-AR agonists used in anti-stress formulations.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Vujjini, S. et al.: Org. Proc. Res. Dev., 17, 303 (2013); Xu, F. et al.: Org. Lett., 15, 1342 (2013);

Formula: C₆H₁₉NSi₂

Colore e forma: Neat

Peso molecolare: 161.39

Ref: TR-H296700

1,1,1,3,3,3-HEXAMETHYLDISILAZANE, 99%

CAS: 999-97-3

Alkyl Silane - Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.
Silane Cross-Coupling Agent
The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.
Trimethylsilyl Blocking Agent
Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.
ALD Material
Atomic layer deposition (ALD) is a chemically self-limiting deposition technique that is based on the sequential use of a gaseous chemical process. A thin film (as fine as -0.1 Å per cycle) results from repeating the deposition sequence as many times as needed to reach a certain thickness. The major characteristic of the films is the resulting conformality and the controlled deposition manner. Precursor selection is key in ALD processes, namely finding molecules which will have enough reactivity to produce the desired films yet are stable enough to be handled and safely delivered to the reaction chamber.
1,1,1,3,3,3-Hexamethyldisilazane; HMDS; HMDZ; Bis(trimethylsilyl)amine
<5 ppm chlorideStandard grade available, SIH6110.0Viscosity: 0.90 cStΔHcomb: 25,332 kJ/molΔHvap: 34.7 kJ/molDipole moment: 0.37 debyeSurface tension: 18.2 mN/mSpecific wetting surface: 485 m2/gVapor pressure, 50 °: 50 mmpKa: 7.55Photoresist adhesion promoterDielectric constant: 1000 Hz: 2.27Ea, reaction w/SiO2 surface: 73.7 kJ/molVersatile silylation reagentCreates hydrophobic surfacesConverts acid chlorides and alcohols to amines in a three-component reactionReacts with formamide and ketones to form pyrimidinesLithium reagent reacts w/ aryl chlorides or bromides to provide primary anilinesUsed to convert ketones to α-aminophosphonates

Formula: C₆H₁₉NSi₂

Purezza: 99%

Colore e forma: Colourless Liquid

Peso molecolare: 161.39

Ref: 3H-SIH6110.1

1,1,1,3,3,3-HEXAMETHYLDISILAZANE, 98%

CAS: 999-97-3

Alkyl Silane - Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.
ALD Material
Atomic layer deposition (ALD) is a chemically self-limiting deposition technique that is based on the sequential use of a gaseous chemical process. A thin film (as fine as -0.1 Å per cycle) results from repeating the deposition sequence as many times as needed to reach a certain thickness. The major characteristic of the films is the resulting conformality and the controlled deposition manner. Precursor selection is key in ALD processes, namely finding molecules which will have enough reactivity to produce the desired films yet are stable enough to be handled and safely delivered to the reaction chamber.
Trimethylsilyl Blocking Agent
Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.
Silane Cross-Coupling Agent
The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.
Hexamethyldisilazane; HMDS; HMDZ; Bis(trimethylsilyl)amine
Viscosity: 0.90 cStLow chloride grade available, SIH6110.1ΔHcomb: 25,332 kJ/molΔHvap: 34.7 kJ/molDipole moment: 0.37 debyeSurface tension: 18.2 mN/mSpecific wetting surface: 485 m2/gVapor pressure, 50 °C: 50 mmpKa: 7.55Dielectric constant: 1000 Hz: 2.27Ea, reaction w/SiO2 surface: 73.7 kJ/moleReleases ammonia upon reactionVersatile silylation reagentTreatment of fumed silica renders it hydrophobicBoth trimethylsilyl groups usedConverts acid chlorides and alcohols to amines in a three-component reactionReacts with formamide and ketones to form pyrimidinesSilylations catalyzed by SIT8510.0 and other reagentsNafion SAC-13 has been shown to be a recyclable catalyst for the trimethylsilylation of primary, secondary, and tertiary alcohols in excellent yields and short reaction timesUsed to convert ketones to α-aminophosphonatesLithium reagent reacts with aryl chlorides or bromides to provide anilinesSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochureExtensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75" Denmark, S. E. ed., John Wiley and Sons, 233, 2011

Formula: C₆H₁₉NSi₂

Purezza: 98%

Colore e forma: Colourless Liquid

Peso molecolare: 161.39

Ref: 3H-SIH6110.0

1,1,1,3,3,3-Hexamethyldisilazane (HMDS) pure, 98%

CAS: 999-97-3

Formula: C₆H₁₉NSi₂

Purezza: min. 98%

Colore e forma: Clear, Colourless, Liquid

Peso molecolare: 161.40

Ref: SR-28437