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480983

Sigma-Aldrich

Propin

≥97%

Synonym(e):

Allylene, Methylacetylene

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About This Item

Lineare Formel:
CH3C≡CH
CAS-Nummer:
74-99-7
Molekulargewicht:
40.06
EG-Nummer:
200-828-4
MDL-Nummer:
MFCD00036235
UNSPSC-Code:
12142100
PubChem Substanz-ID:
24871730
NACRES:
NA.22
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Dampfdruck

204.6 mmHg ( −49.5 °C)

Qualitätsniveau

100

Assay

≥97%

Form

gas

bp

−23.2 °C (lit.)

mp (Schmelzpunkt)

−102.7 °C (lit.)

SMILES String

CC#C

InChI

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

InChIKey

MWWATHDPGQKSAR-UHFFFAOYSA-N

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Allgemeine Beschreibung

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

Anwendung

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]

Verpackung

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:

Rechtliche Hinweise

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

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PTFE-Dichtungsband, W 1/2 in.

Signalwort

Danger

Gefahreneinstufungen

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

Zielorgane

Respiratory system

Lagerklassenschlüssel

2A - Gases

WGK

nwg

Persönliche Schutzausrüstung

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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
STBH2241
SHBK9547
BCBR8747V
SHBG8380V
SHBG8381V

Die passende Version wird nicht angezeigt?

Wenn Sie eine bestimmte Version benötigen, können Sie anhand der Lot- oder Chargennummer nach einem spezifischen Zertifikat suchen.

Suche nach COA

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Cyclopropylacetylen Neat, 97%

Sigma-Aldrich

663018

Cyclopropylacetylen

1-Hexyne for synthesis

Sigma-Aldrich

8.20643

1-Hexyne

1-Phenyl-1-propin 99%

Sigma-Aldrich

161241

1-Phenyl-1-propin

Tributyl(1-propinyl)zinn 95%

Sigma-Aldrich

499862

Tributyl(1-propinyl)zinn

Propyne hydrogenation over alumina-supported palladium and platinum catalysts
Kennedy DR, et al.
Applied Catalysis A: General, 259(1), 109-120 (2004)
Reaction of phenyl radicals with propyne
Vereecken L, et al.
Journal of the American Chemical Society, 124(11), 2781-2789 (2002)
Isomer-specific combustion chemistry in allene and propyne flames
Hansen N, et al.
Combustion and Flame, 156(11), 2153-2164 (2009)
Ying Guo et al.
Physical chemistry chemical physics : PCCP, 9(16), 1972-1979 (2007-04-14)
Crossed molecular beams experiments have been utilized to investigate the reaction dynamics between two closed shell species, i.e. the reactions of tricarbon molecules, C(3)(X(1)Sigma(g)(+)), with allene (H(2)CCCH(2); X(1)A(1)), and with methylacetylene (CH(3)CCH; X(1)A(1)). Our investigations indicated that both these reactions
Lourdes Gracia et al.
The journal of physical chemistry. A, 112(8), 1808-1816 (2008-02-07)
Possible molecular mechanisms of the gas-phase ion/molecule reaction of VO2+ in its lowest singlet and triplet states (1A1/3A' ') with propyne have been investigated theoretically by density functional theory (DFT) methods. The geometries, energetic values, and bonding features of all
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 Antwort

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

    1 Antwort

    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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