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Trimethylsilylacetylene

Silican-protected group Application
Trimethylsilylacetylene
Trimethylsilylacetylene structure
CAS No.
1066-54-2
Chemical Name:
Trimethylsilylacetylene
Synonyms
TMSA;TMS ACETYLENE;Trimethylsilacetylene;Timethylsilyacetylene;(Trimethylsilyl)ethyne;ETHYNYLTRIMETHYLSILANE;ETHINYLTRIMETHYLSILANE;1-Trimethylsilylethyne;Trimethylethynylsilane;Ethyne,-trimethylsilyl
CBNumber:
CB3175930
Molecular Formula:
C5H10Si
Formula Weight:
98.22
MOL File:
1066-54-2.mol

Trimethylsilylacetylene Properties

Melting point:
>0°C
Boiling point:
53 °C(lit.)
Density 
0.695 g/mL at 25 °C(lit.)
vapor pressure 
4.18 psi ( 20 °C)
refractive index 
n20/D 1.388(lit.)
Flash point:
<−30 °F
storage temp. 
2-8°C
solubility 
Miscible with organic solvents.
form 
liquid
color 
colorless
Specific Gravity
0.695
Water Solubility 
reacts
BRN 
906752
InChIKey
CWMFRHBXRUITQE-UHFFFAOYSA-N
CAS DataBase Reference
1066-54-2(CAS DataBase Reference)
NIST Chemistry Reference
(Trimethylsilyl)acetylene(1066-54-2)
EPA Substance Registry System
Silane, ethynyltrimethyl-(1066-54-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F,Xi
Risk Statements  11-36/37/38
Safety Statements  16-26-36
RIDADR  UN 1993 3/PG 2
WGK Germany  -
Hazard Note  Flammable/Irritant
TSCA  T
HazardClass  3
PackingGroup  II
HS Code  29310095
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment.
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.
P370+P378 In case of fire: Use … for extinction.
P403+P235 Store in a well-ventilated place. Keep cool.

Trimethylsilylacetylene price More Price(14)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 218170 Ethynyltrimethylsilane 98% 1066-54-2 1g $27.2 2018-11-13 Buy
Sigma-Aldrich 218170 Ethynyltrimethylsilane 98% 1066-54-2 5g $53.2 2018-11-13 Buy
TCI Chemical T1239 Trimethylsilylacetylene >98.0%(GC) 1066-54-2 5mL $32 2018-11-22 Buy
TCI Chemical T1239 Trimethylsilylacetylene >98.0%(GC) 1066-54-2 25mL $97 2018-11-22 Buy
Alfa Aesar A12856 (Trimethylsilyl)acetylene, 98% 1066-54-2 25g $159 2018-11-13 Buy

Trimethylsilylacetylene Chemical Properties,Uses,Production

Silican-protected group

Trimethylsilylacetylene is a silican-protected group, also known as trimethylethynylsilane, trimethylethynyl silicon and ethynyltrimethylsilane. It is a colorless transparent liquid at room temperature. It could be used to synthesize parazole by the addition of 1,3-bipolar ring of acetylene diazide. It is also the substrate of nickel catalyzed reaction and benzonitrile coupling reaction.

Application

Chemical Properties

CLEAR COLORLESS LIQUID

Uses

Ethynyltrimethylsilane was used in: ? microwave-assisted, one-pot, three-step Sonogashira cross-coupling-desilylation-cycloaddition reaction for the preparation of 1,4-disubstituted 1,2,3-triazoles synthesis of poly(ethynyltrimethylsilane) containing Pd (II) coordination sites pyrazole synthesis via 1,3-dipolar cycloaddition of diazo compounds to acetylenes

Purification Methods

Distil it through an efficient column. The IR has bands at max 2041 (CC) and 3289 (C-H) cm-1. [Kr.hnke & Goss Chem Ber 92 30 1959, Beilstein 4 IV 3937.]

Trimethylsilylacetylene Preparation Products And Raw materials

Raw materials

Preparation Products


Trimethylsilylacetylene Suppliers

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