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MilliporeSigma

480983

Sigma-Aldrich

Propyne

≥97%

Synonym(s):

Allylene, Methylacetylene

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$160.25
100 G
$391.00

About This Item

Linear Formula:
CH3C≡CH
CAS Number:
Molecular Weight:
40.06
EC Number:
MDL number:
UNSPSC Code:
12142100
PubChem Substance ID:
NACRES:
NA.22

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$160.25

List Price$174.00Save 8%
Web-Only Promotion

In StockDetails


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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

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1 of 4

This Item
536172414220376841
Propyne ≥97%

480983

Propyne

Propane 99.5%

536172

Propane

assay

≥97%

assay

99.5%

assay

99.7%

assay

97%

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

form

gas

form

-

form

liquid

form

liquid

mp

−102.7 °C (lit.)

mp

-188 °C (lit.)

mp

−55 °C (lit.)

mp

-

bp

−23.2 °C (lit.)

bp

-42.1 °C (lit.)

bp

240 °C (lit.)

bp

75 °C/20 mmHg (lit.)

vapor pressure

204.6 mmHg ( −49.5 °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)

vapor pressure

-

General description

Propyne (methylacetylene) is commonly used in gas welding.[1]

Application

Propyne (CH3C≡CH) can be used:
  • As a fuel for stoichiometric low-pressure flat-flames in isomer-specific combustion studies.[2]
  • In the synthesis of polycyclic aromatic hydrocarbons under various reaction conditions.[3]
  • In the synthesis of phenylacetylenes.[3]
  • In the selective synthesis of propene by catalytic hydrogenation using Pt/Al2O3 catalyst.[4]

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

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)


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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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