52619

Hexamethyldisilazane

for GC derivatization, LiChropur^™, ≥99.0% (GC)

• Sinonimo/i: HMDS
• Formula condensata: (CH₃)₃SiNHSi(CH₃)₃
• Numero CAS: 999-97-3
• Peso molecolare: 161.39
• Beilstein: 635752
• Numero CE: 213-668-5
• Numero MDL: MFCD00008259
• Codice UNSPSC: 12000000
• ID PubChem: 329757861
• NACRES: NA.22

Proprietà

• Grado: for GC derivatization
• Livello qualitativo: 100
• Saggio: ≥99.0% (GC)
• Stato: liquid
• Qualità: LiChropur^™
• Impiego in reazioni chimiche: reagent type: derivatization reagent; reaction type: Silylations
• tecniche: gas chromatography (GC): suitable
• Indice di rifrazione: n20/D 1.407 (lit.); n20/D 1.408
• P. ebollizione: 125 °C (lit.)
• Stringa SMILE: C[Si](C)(C)N[Si](C)(C)C
• InChI: 1S/C6H19NSi2/c1-8(2,3)7-9(4,5)6/h7H,1-6H3; FFUAGWLWBBFQJT-UHFFFAOYSA-N

Descrizione

Descrizione generale

Hexamethyldisilazane (HMDS) is a commercially available, silylating agent,[1][2] which is used as an alternative for the preparation of silyl ethers from hydroxyl compounds.[2]

Applicazioni

Learn more in the Product Information

Hexamethyldisilazane is suitable for the derivatization of alcohols, U-aminobutyric acid, pesticidal carbamates and urea, 3,4-Dihydroxyphenylglycol, 4-hydroxycoumarins, hydroxyfatty acids, n-hydroxy-2-fluorenylacetamide, kerb cycle acid, malonaldehyde, monoglycerides, phenylpyruvic acid, shikimic acid, unsaturated fatty acid esters (or methyl esters), and related compounds.

It may be used as a derivatizing reagent for the analysis of bioamines and their acidic metabolites,[3] phenol, hydroquinone and catechol[4] in urine samples, mixtures of free fatty acids and metal soaps in paint samples[5] using gas chromatography/mass spectrometry (GC/MS).

Suitable for the derivatization of alcohols, Υ-aminobutyric acid, pesticidal carbamates and urea, 3,4-Dihydroxyphenylglycol, 4-hydroxycoumarins, hydroxyfatty acids, n-hydroxy-2-fluorenylacetamide, kerb cycle acid, malonaldehyde, monoglycerides, phenylpyruvic acid, shikimic acid, unsaturated fatty acid esters (or methyl esters), and related compounds.

Caratteristiche e vantaggi

• HMDS is inexpensive and has a relatively low boiling point (124-127 °C).        
• It can be used without solvent but its silylating power can be increased by various (mostly acidic) catalysts.        
• The only reaction byproduct, ammonia, can leave the reaction mixture as the reaction goes to completion.

Altre note

Important silylating agent[6][7]

Reagent for 2-hydroxypyrimidine, polytrimethylsilyloxy, trimethylsilyl and trimethylsilyl oximes.

Note legali

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Informazioni sulla sicurezza

• Pittogrammi: GHS02,GHS06
• Avvertenze: Danger
• Indicazioni di pericolo: H225,H302 + H332,H311,H412
• Consigli di prudenza: P210 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P312
• Classi di pericolo: Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Flam. Liq. 2
• Codice della classe di stoccaggio: 3 - Flammable liquids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): 52.5 °F - closed cup
• Punto d’infiammabilità (°C): 11.4 °C - closed cup
• Dispositivi di protezione individuale: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter