MilliporeSigma
All Photos(1)

Documents

480983

Sigma-Aldrich

Propyne

≥97%

Sign Into View Organizational & Contract Pricing

Synonym(s):
Allylene, Methylacetylene
Linear Formula:
CH3C≡CH
CAS Number:
Molecular Weight:
40.06
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor pressure

204.6 mmHg ( −49.5 °C)

Quality Level

assay

≥97%

form

gas

bp

−23.2 °C (lit.)

mp

−102.7 °C (lit.)

SMILES string

CC#C

InChI

1S/C3H4/c1-3-2/h1H,2H3

InChI key

MWWATHDPGQKSAR-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
W352101536172414220
vibrant-m

480983

Propyne

vibrant-m

W352101

Propyl mercaptan

vibrant-m

536172

Propane

vibrant-m

414220

Propylene carbonate

Quality Level

100

Quality Level

400

Quality Level

100

Quality Level

100

mp

−102.7 °C (lit.)

mp

−113 °C (lit.)

mp

-188 °C (lit.)

mp

−55 °C (lit.)

form

gas

form

-

form

-

form

liquid

bp

−23.2 °C (lit.)

bp

67-68 °C (lit.)

bp

-42.1 °C (lit.)

bp

240 °C (lit.)

vapor pressure

204.6 mmHg ( −49.5 °C)

vapor pressure

122 mmHg ( 20 °C)

vapor pressure

190 psi ( 37.7 °C), 8.42 atm ( 21.1 °C)

vapor pressure

0.13 mmHg ( 20 °C), 0.98 mmHg ( 50 °C)

General description

Propyne (methylacetylene) is commonly used in gas welding.

Application

Propyne (CH3C≡CH) can be used:
  • As a fuel for stoichiometric low-pressure flat-flames in isomer-specific combustion studies.
  • In the synthesis of polycyclic aromatic hydrocarbons under various reaction conditions.
  • In the synthesis of phenylacetylenes.
  • In the selective synthesis of propene by catalytic hydrogenation using Pt/Al2O3 catalyst.

Packaging

Supplied in a Sure/Pac cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve.

Compatible with the following:

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

Hose barb

Product No.
Description
Pricing

Regulator

Product No.
Description
Pricing

also commonly purchased with this product

Product No.
Description
Pricing

signalword

Danger

Hazard Classifications

Flam. Gas 1A - Press. Gas Compr. Gas - STOT SE 3

target_organs

Respiratory system

Storage Class

2A - Gases

wgk_germany

nwg

ppe

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 6

1 of 6

Propylene ≥99%

Sigma-Aldrich

295663

Propylene

Cyclopropylacetylene Neat, 97%

Sigma-Aldrich

663018

Cyclopropylacetylene

1-Hexyne for synthesis

Sigma-Aldrich

8.20643

1-Hexyne

1-Phenyl-1-propyne 99%

Sigma-Aldrich

161241

1-Phenyl-1-propyne

Propyne hydrogenation over alumina-supported palladium and platinum catalysts
Kennedy DR, et al.
Applied Catalysis A: General, 259(1), 109-120 (2004)
In situ generation of 1-propyne: A useful introduction of 1-propyne on unsaturated halogenated compounds through the Sonogashira reaction
Abraham E and Suffert J
Synlett, 2002(02), 0328-0330 (2002)
Yongping Zhang et al.
Langmuir : the ACS journal of surfaces and colloids, 29(6), 1868-1874 (2013-01-19)
To achieve silicon functionalization for the development of hybrid devices, multifunctional molecules may be employed to attach to the silicon surfaces. It is important to get a fundamental understanding about the molecule/silicon interface chemistry and the binding configuration. The surface
Masumi Asakura et al.
Mutation research, 652(2), 122-130 (2008-03-18)
A gas exposure system using rotating vessels was improved for exposure of cultured mammalian cells to gaseous compounds in the chromosomal aberration assay. This system was composed of 12 square culture vessels, a device for preparation of air containing test
Michael J Ardolino et al.
Journal of the American Chemical Society, 134(21), 8770-8773 (2012-05-19)
The palladium-catalyzed cross-coupling of chiral propargyl acetates and allyl boronates delivers chiral 1,5-enynes with excellent levels of chirality transfer and can be applied across a broad range of substrates.

Protocols

Separation of Acetylene; Propyne; Propylene; Propane

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service