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ChemicalBook >  Product Catalog >  Chemical Reagents >  Silane reagent >  1,3-Bis(trimethylsilyl)urea

1,3-Bis(trimethylsilyl)urea

Basic information General Description Safety Supplier Related

1,3-Bis(trimethylsilyl)urea Basic information

Product Name:
1,3-Bis(trimethylsilyl)urea
Synonyms:
  • Urea, TMS
  • BIS(TRIMETHYLSILYL)UREA
  • BSU
  • N,N'-BIS(TRIMETHYLSILYL)UREA
  • Hexamethyl disilaurea
  • N N'-BIS(TRIMETHYLSILYL)UREA 98+%
  • Bis-(Trimethylsilyl)-Urea (BSU)
  • Ureylenebis(trimethylsilane)
CAS:
18297-63-7
MF:
C7H20N2OSi2
MW:
204.42
EINECS:
242-177-9
Product Categories:
  • Building Blocks
  • Carbonyl Compounds
  • Trimethylsilylazide, etc.
  • Chemical Synthesis
  • Organic Building Blocks
  • Ureas
  • Si (Classes of Silicon Compounds)
  • Silicon Compounds (for Synthesis)
  • Si-N Compounds
  • Synthetic Organic Chemistry
  • Blocking Agents
  • Protective Agents
  • Silazanes
  • Silylating Agents
  • Special Silanes
  • K00001
Mol File:
18297-63-7.mol
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1,3-Bis(trimethylsilyl)urea Chemical Properties

Melting point:
219-221 °C(lit.)
Boiling point:
222°C
Density 
0.887
vapor pressure 
0.002-1850Pa at 25℃
Flash point:
65°C
storage temp. 
Inert atmosphere,Room Temperature
solubility 
pyridine: soluble100mg/mL, clear to slightly hazy, colorless to light yellow
form 
solid
pka
16.51±0.46(Predicted)
color 
White to Almost white
Water Solubility 
Reacts with water.
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
Sensitive 
Moisture Sensitive
BRN 
1937452
InChIKey
MASDFXZJIDNRTR-UHFFFAOYSA-N
LogP
-2.11-2.72 at 20℃
CAS DataBase Reference
18297-63-7(CAS DataBase Reference)
NIST Chemistry Reference
Urea, n,n'-bis(trimethylsilyl)-(18297-63-7)
EPA Substance Registry System
N,N'-Bis(trimethylsilyl)urea (18297-63-7)
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Safety Information

Hazard Codes 
F,Xn
Risk Statements 
11-36/37/38-20/21/22
Safety Statements 
14-16-24/25-36-26
RIDADR 
UN 1325 4.1/PG 2
WGK Germany 
3
3-10-21
TSCA 
Yes
HS Code 
29310095

MSDS

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1,3-Bis(trimethylsilyl)urea Usage And Synthesis

General Description

Silazane is any hydride of silicon and nitrogen having a straight or branched chain of silicon and nitrogen atoms joined by covalent bonds. By extension, the word is also used for any organic derivative of such compounds. They are analogous to siloxanes, with -NH- replacing -O-. Their individual name is dependent on the number of silicon atoms in the chemical structure. 1,3-Bis(trimethylsilyl)urea is an effective silylating agent. It is used in the pharmaceutical and in the chemical industry.

Chemical Properties

White solid with mild odor

Uses

N,N'-Bis(trimethylsilyl)urea is used as a reagent for the silylation of alcohols and carboxylic acids.

Flammability and Explosibility

Not classified

1,3-Bis(trimethylsilyl)ureaSupplier

Shanghai Kaisai Chemical Co., Ltd Gold
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