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Merck

52619

Hexamethyldisilazane

derivatization grade (GC derivatization), LiChropur™, ≥99.0% (GC)

Sinónimos:

HMDS

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Fórmula lineal:
(CH3)3SiNHSi(CH3)3
Número CAS:
999-97-3
Peso molecular:
161.39
UNSPSC Code:
12352200
NACRES:
NA.22
PubChem Substance ID:
329757861
EC Number:
213-668-5
Beilstein/REAXYS Number:
635752
MDL number:
MFCD00008259

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InChI key

FFUAGWLWBBFQJT-UHFFFAOYSA-N

InChI

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

SMILES string

C[Si](C)(C)N[Si](C)(C)C

grade

derivatization grade (GC derivatization)

assay

≥99.0% (GC)

form

liquid

quality

LiChropur™

reaction suitability

reagent type: derivatization reagent
reaction type: Silylations

technique(s)

gas chromatography (GC): suitable

refractive index

n20/D 1.407 (lit.), n20/D 1.408

bp

125 °C (lit.)

Quality Level

100

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General description

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

Application

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, phenol, hydroquinone and catechol in urine samples, mixtures of free fatty acids and metal soaps in paint samples 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.

Features and Benefits

  • 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.

Other Notes

Importante agente sililante
Reagent for 2-hydroxypyrimidine, polytrimethylsilyloxy, trimethylsilyl and trimethylsilyl oximes.

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

pictograms

FlameSkull and crossbones
GHS02,GHS06

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Flam. Liq. 2

Clase de almacenamiento

3 - Flammable liquids

wgk

WGK 2

flash_point_f

52.5 °F - closed cup

flash_point_c

11.4 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Certificados de análisis (COA)

Lot/Batch Number
BCCM7265
BCCK7506
BCCJ0766
BCCG3738
BCCF4725

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Silylation of Organic Compounds
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