Propylene | Metro Welding Supply Corp.

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ABOUT THIS PRODUCT

Propylene gas, also known as propene, is a colorless and flammable hydrocarbon gas. It is widely used in metalworking processes, such as cutting and welding, due to its high heat output and clean combustion. Propylene also serves as an excellent heat source for applications like flame heating in industries such as glassworking and ceramics. The controlled flame of propylene is also ideal for brazing and soldering operations, providing the necessary heat without damaging the workpiece.

10 KEY CHARACTERISTICS

  1. Flammability: Propylene gas is highly flammable, and it can ignite easily in the presence of a spark, flame, or heat source.
  2. Chemical Formula: Its chemical formula is C3H6, indicating that it is composed of three carbon atoms and six hydrogen atoms.
  3. Boiling Point: Propylene has a relatively low boiling point of approximately -48°C (-54°F), making it easy to convert from a liquid to a gas.
  4. Density: It is denser than air, which means it can accumulate in low-lying or enclosed areas if not properly ventilated.
  5. Color and Odor: Propylene is colorless and odorless in its natural state. However, commercial grades may have a faint, characteristic odor added as a safety measure.
  6. Stability: It is stable under normal conditions, but can potentially polymerize (form long chains) if exposed to high temperatures or certain catalysts.
  7. Reactivity: Propylene can react with oxidizers and strong acids, potentially leading to hazardous situations. It is important to handle it with care and avoid incompatible substances.
  8. Solubility: It is sparingly soluble in water, but it can dissolve in organic solvents like ethanol, acetone, and ether.
  9. High Heat Content: Propylene has a high calorific value, making it an efficient and effective fuel for various industrial processes.
  10. Clean Combustion: When burned, propylene produces a clean flame with low emissions of soot and pollutants, making it suitable for applications where clean combustion is essential.

10 COMMON USES

  1. Polymer Production: Propylene is a key raw material in the production of polypropylene, one of the most widely used thermoplastics in industries such as packaging, textiles, automotive, and consumer goods.
  2. Chemical Intermediates: It serves as a building block for the production of various chemicals, including propylene oxide, acrylonitrile, and cumene, which are used in the manufacture of plastics, fibers, and pharmaceuticals.
  3. Fuel Gas: Propylene is used as a fuel in various applications, including heating, cutting, and welding processes in industries like metalworking and construction.
  4. Refrigeration: It is used as a component in propylene-based refrigerant blends, especially in certain low-temperature refrigeration systems.
  5. Thermal Spraying: Propylene is utilized as a fuel for thermal spray processes, which are used for applying coatings on surfaces to enhance their properties.
  6. Solvent: It can serve as a solvent for dissolving certain compounds in industrial processes, including extraction and formulation of chemicals.
  7. Flame Treatment: Propylene flames are used for surface modification of plastics and other materials to enhance adhesion properties in applications like printing and laminating.
  8. Brazing and Soldering: The controlled flame produced by burning propylene is used in metal joining processes like brazing and soldering.
  9. Heat Treating: It is employed in heat-treating operations to provide controlled and uniform heating of metals for hardening or other treatments.
  10. Fuel Gas for Industrial Burners: In various industries, propylene is used as a clean-burning fuel for industrial burners, providing high energy output with minimal emissions.

  • What are the different cylinder styles and capacities available for propylene storage?

    Propylene Cylinder Styles and Capacities


    When selecting propylene cylinders, a variety of styles and capacities are available to meet the specific needs of different applications. Here’s a detailed overview of the options:


    1. 100-pound Cylinder: This is the largest capacity available, suitable for high-volume usage. It is typically used in industrial settings where large amounts of propylene are required.
    2. 60-pound Cylinder: A mid-range option that balances capacity with ease of handling. It's ideal for moderate use in both commercial and industrial environments.
    3. 25-pound Cylinder: This smaller cylinder is perfect for occasional use or in settings where space is limited and mobility is essential.
    4. 5-pound Cylinder: The smallest option, ideal for minimal usage or when portability is paramount. It’s often used by professionals who need a lightweight and compact solution.

    Each cylinder is designed to withstand a pressure of 137 psig/995 kPa at 70°F (21°C). They are identified by specific part numbers for easy reference: PY 100 for the 100-pound cylinder, PY 60 for the 60-pound, PY 25 for the 25-pound, and PY 5 for the 5-pound model.


    Choosing the right cylinder depends on both the volume of propylene needed and the specific requirements of the task at hand.

  • What transportation information is provided for propylene cylinders, including chemical formula, purity, and regulatory classifications?

    The transportation details for propylene cylinders cover a range of specifications and regulatory classifications relevant to the product’s handling and shipping. The chemical composition of the gas is defined by its formula, C3H6, and it has a minimum purity level of 94.0%. For connection to equipment, the cylinders are equipped with a CGA 510 outlet.


    Furthermore, the propylene cylinders adhere to specific safety and handling regulations:


    • The Material Safety Data Sheet (MSDS) is identified as P-4648.
    • The CAS registry number of propylene is 115-07-1.
    • The cylinders are classified under the UN Number 1077.

    In terms of transportation, they are labeled as a flammable gas, consistent with their US DOT name "Propylene" and classified under US DOT Class 2.1 as a flammable gas. This classification indicates the risks associated with the product’s flammable nature during transport.

  • What equipment may need to be replaced or adjusted when converting from acetylene to propylene?

    Switching from acetylene to propylene for cutting processes involves a few key changes to your equipment to accommodate the different properties of these gases. Here’s a straightforward breakdown of what you’ll need to update:


    Essential Equipment Adjustments:


    • Fuel Gas Supply Hose: Replace your existing hose with a Grade T hose, which is suitable for the higher output needs of propylene.
    • Cutting Tip: The cutting tip must be changed because propylene requires a different style to effectively handle its flow and combustion characteristics.
    • Mixer Adjustment: Depending on how thick the material you plan to cut is, the mixer of your oxy/acetylene torch may also need replacement. This is due to the varying oxygen and fuel gas ratios needed for optimal combustion with propylene compared to acetylene.

    These updates ensure that your equipment handles the new gas safely and performs efficiently.

  • What are the properties and characteristics of propylene as a fuel gas?

    Propylene gas, also known as propene, is a colorless and flammable hydrocarbon gas with a faintly sweet odor. It stands out in the realm of industrial gases due to its chemical structure, represented by the formula C3H6. This gas is not only notable for its high heat output and clean combustion but also for its capacity to deliver moderate BTU in its primary flame and high BTU in its secondary flames.


    In metalworking processes such as cutting and welding, propylene proves to be highly efficient. Its controlled flame and high secondary heating capacity, comparable to that of acetylene but superior in the outer flame, make it ideal for tasks requiring precision and power. Beyond metalworking, this versatile gas is widely used for flame heating in industries such as glassworking and ceramics, where its ability to generate intense heat without compromising the integrity of the material is highly valued.


    Propylene is also excellent for brazing and soldering operations, providing the necessary heat with control to prevent damage to the workpiece. When transitioning from acetylene to propylene, specific adjustments are necessary, such as replacing the fuel gas supply hose (grade T) and the cutting tip to accommodate the different oxygen/fuel gas combustion ratio. Depending on the thickness of the material being cut, it might also be essential to replace the mixer in the oxy/acetylene cutting torch.


    Furthermore, propylene offers enhanced safety benefits; it can be utilized up to full tank pressure and is well suited for use at cold temperatures due to its greater vapor pressure compared to propane. This makes it a reliable choice across a variety of environmental conditions, ensuring consistent performance and safety.

Disclaimer:


Please consult our Material Safety Data Sheet (MSDS) and follow all recommended safety protocols and guidelines when handling Propylene. Misuse or mishandling of this chemical can result in serious health risks and environmental hazards.

Note:


This product page is intended to provide an informative overview of Propylene. For specific inquiries, technical details, or orders, please contact our sales team.

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