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480983

Sigma-Aldrich

Propyne

≥97%

Synonyme(s) :

Allylene, Methylacetylene

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About This Item

Formule linéaire :
CH3C≡CH
Numéro CAS:
74-99-7
Poids moléculaire :
40.06
Numéro CE :
200-828-4
Numéro MDL:
MFCD00036235
Code UNSPSC :
12142100
ID de substance PubChem :
24871730
Nomenclature NACRES :
NA.22
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Pression de vapeur

204.6 mmHg ( −49.5 °C)

Niveau de qualité

100

Essai

≥97%

Forme

gas

pb

−23.2 °C (lit.)

Pf

−102.7 °C (lit.)

Chaîne SMILES 

CC#C

InChI

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

Clé InChI

MWWATHDPGQKSAR-UHFFFAOYSA-N

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Description générale

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]

Conditionnement

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:

Informations légales

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

En option

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Raccord cannelé

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Z146811

Hose adapter, brass

Régulateur

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Description
Tarif

Z221880

PTFE sealing tape, W 1 in.

Z104388

PTFE sealing tape, W 1/2 in.

Pictogrammes

FlameGas cylinderExclamation mark
GHS02,GHS04,GHS07

Mention d'avertissement

Danger

Mentions de danger

H220,H280,H335

Classification des risques

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

Organes cibles

Respiratory system

Code de la classe de stockage

2A - Gases

Classe de danger pour l'eau (WGK)

nwg

Équipement de protection individuelle

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

Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number
STBH2241
SHBK9547
BCBR8747V
SHBG8380V
SHBG8381V

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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)
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)
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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Questions

1–2 sur 2 questions  

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

    1 réponse

    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 réponse

    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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