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Merck
CN

254339

2-Butyne

99%

Synonym(s):

Crotonylene, Dimethylacetylene

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About This Item

Linear Formula:
CH3C≡CCH3
CAS Number:
503-17-3
Molecular Weight:
54.09
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24855377
EC Number:
207-962-2
Beilstein/REAXYS Number:
1361340
MDL number:
MFCD00009275

Key Documents

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Product Name

2-Butyne, 99%

InChI key

XNMQEEKYCVKGBD-UHFFFAOYSA-N

InChI

1S/C4H6/c1-3-4-2/h1-2H3

SMILES string

CC#CC

vapor pressure

11.47 psi ( 20 °C)

assay

99%

form

liquid

refractive index

n20/D 1.393 (lit.)

bp

27 °C (lit.)

mp

−32 °C (lit.)

density

0.691 g/mL at 25 °C (lit.)

storage temp.

2-8°C

Quality Level

100

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Application

2-Butyne has been used in preparation of THF-free metallacyclobutene complexes.

General description

The ion-molecule reaction of the aromatic distonic N-methyl-pyridinium-4-yl radical cation with 2-butyne has been investigated using ion trap mass spectrometry.

signalword

Danger

pictograms

FlameExclamation mark
GHS02,GHS07

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 1 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

-13.0 °F - closed cup

flash_point_c

-25 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCX5384
MKCT2889
MKCQ7448
MKBZ0165V
MKBX3219V

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Living polymerization of 2-butyne using a well-characterized tantalum catalyst.
Wallace KC, et al.
Organometallics, 8(3), 644-654 (1989)
C J Kees-Jan Weststrate et al.
Nature communications, 11(1), 750-750 (2020-02-08)
Facile C-C bond formation is essential to the formation of long hydrocarbon chains in Fischer-Tropsch synthesis. Various chain growth mechanisms have been proposed previously, but spectroscopic identification of surface intermediates involved in C-C bond formation is scarce. We here show
Aaron M Thomas et al.
The journal of physical chemistry letters, 9(12), 3340-3347 (2018-05-31)
The bimolecular gas phase reaction of ground-state silicon (Si; 3P) with dimethylacetylene (C4H6; X1A1g) was investigated under single collision conditions in a crossed molecular beams machine. Merged with electronic structure calculations, the data propose nonadiabatic reaction dynamics leading to the
Andrea Cernuto et al.
The Journal of chemical physics, 147(15), 154302-154302 (2017-10-23)
The methyl carbocation is ubiquitous in gaseous environments, such as planetary ionospheres, cometary comae, and the interstellar medium, as well as combustion systems and plasma setups for technological applications. Here we report on a joint experimental and theoretical study on
Oleg G Salnikov et al.
Chemical science, 8(3), 2426-2430 (2017-04-30)
Mechanistic insight into the semihydrogenation of 1-butyne and 2-butyne on Cu nanoparticles supported on partially dehydroxylated silica (Cu/SiO
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