3-Ethynylthiophene

What is 3-Ethynylthiophene?

3-Ethynylthiophene may be used in the synthesis of the following:

1-(2-bromobenzyl)-4-(thiophen-3-yl)-1H-1,2,3-triazole which is obtained by heating with 2-iodophenylethylazide in the presence of copper acetate monohydrate catalyst in N-methyl-2-pyrrolidone
N-benzyl-1-phenyl-5-(thiophen-3-yl)-4-pentyn-2-amine via a multi-step reaction process
[(C₄H₃S-3)C≡CAg]_n, a polymeric compound obtained via reaction with silver nitrate in the presence of triethylamine in acetonitrile
4,5-bis(thiophen-3-ylethynyl)phthalonitrile via Sonogashira cross-coupling reaction with 4,5-dichlorophthalonitrile

Boiling point:	152-153 °C (lit.)
Density	1.098 g/mL at 25 °C (lit.)
refractive index	n20/D 1.5800(lit.)
Flash point:	115 °F
storage temp.	Keep in dark place,Inert atmosphere,2-8°C
form	Liquid
color	Colorless to yellow to orange
Water Solubility	Slightly soluble in water.

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H226:Flammable liquids H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation 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. P240:Ground/bond container and receiving equipment. 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.