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HomeProduct name listTrimethylsilyl Isocyanate

Trimethylsilyl Isocyanate

Synonym(s):Isocyanatotrimethylsilane

  • CAS NO.:1118-02-1
  • Empirical Formula: C4H9NOSi
  • Molecular Weight: 115.21
  • MDL number: MFCD00001993
  • EINECS: 214-256-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-07-14 20:44:35
Trimethylsilyl Isocyanate Structural

What is Trimethylsilyl Isocyanate?

Chemical properties

Clear colorless liquid

The Uses of Trimethylsilyl Isocyanate

Trimethylsilyl isocyanate is used in the preparation of 1-unsubstituted 4-(dialkylamino) imidazolin-2-ones. It finds application in the carbamoylation of aromatic hydrocarbons and alcohols. It is also used in the preparation of primary amides from Grignard reagents. Further, it is used in the synthesis of cyclic imides. It is also utilized for the synthesis of trifluoroacetyl isocyanate and cyclic imides. In addition to this, it is employed in the conversion of isocyanates to carbodiimides using cyclopentadienyl Mn(CO)3 catalysis.

Purification Methods

Purify it by repeated fractionation as for the isothiocyanate. [Eaborn J Chem Soc 3077 1950, Beilstein 4 III 1861, 4 IV 4011.]

Properties of Trimethylsilyl Isocyanate

Melting point: -49°C
Boiling point: 90-92 °C(lit.)
Density  0.851 g/mL at 25 °C(lit.)
refractive index  n20/D 1.396(lit.)
Flash point: -2 °C
storage temp.  2-8°C
solubility  Miscible with ethers and o-dichlorobenzene.
form  clear liquid
color  Colorless to Almost colorless
Specific Gravity 0.867
Hydrolytic Sensitivity 8: reacts rapidly with moisture, water, protic solvents
Sensitive  Moisture Sensitive
BRN  1744962
CAS DataBase Reference 1118-02-1(CAS DataBase Reference)
EPA Substance Registry System Isocyanatotrimethylsilane (1118-02-1)

Safety information for Trimethylsilyl Isocyanate

Signal word Danger
Pictogram(s)
ghs
Flame
Flammables
GHS02
ghs
Skull and Crossbones
Acute Toxicity
GHS06
ghs
Health Hazard
GHS08
GHS Hazard Statements H225:Flammable liquids
H317:Sensitisation, Skin
H319:Serious eye damage/eye irritation
H331:Acute toxicity,inhalation
H334:Sensitisation, respiratory
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233:Keep container tightly closed.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Trimethylsilyl Isocyanate

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