Air and acetylene together have an explosive range of 2.2% to 85% by volume. Where acetylene cylinders are kept or used, avoid releasing acetylene into the air, and make sure the area is well-ventilated. 


  • Acetylene cylinders must wait at least 24 hours before being used for gas extraction when they are transported horizontally and then positioned vertically again after transport. 
  • This will guarantee that the acetone inside the cylinder is properly redistributed. 
  • The following things can happen when cylinders are used too fast after being positioned vertically once more: * When opening the top valve, substantial amounts of acetone can escape. Because acetone feels slippery on the skin, the client can mistake this for water or oil.
  •  It should not be common practice to open the top valve without a fitting regulator because doing so can pose a fire risk. 
  • The presence of acetone droplets in the gas causes the flame to be extremely unstable when a regulator is used with a twin hose and a torch. This is frequently referred to as “spitting”.
  • The best course of action is to allow the cylinder to rest for at least 24 hours (more time may be needed in colder environments).





  • Colourless and slightly lighter than air
  • It is non-toxic but has an anesthetic effect if inhaled
  • Acetylene is highly flammable
  • When mixed with oxygen for welding, the flame temperature will reach 3100º C



  • Multi applications for ship maintenance like welding, cutting, brazing, soldering, and heating.
  • Suitable for AC-Ox Gas Distribution System
  • For your safety, the product is delivered in a Unitor exchange cylinder complete with a barcode and unique cylinder serial number.
  • We trace and track all cylinders using our system to give you peace of mind.
  • We offer global availability through our Global Exchange Programme.





  • Cylinder Type: A-40
  • Invent Hazard Material (IMO/EU) Classification: C-18


Physical Properties

  • Colour: Maroon
  • Dimensions/Weight
  • Diameter [mm]: 230
  • Gross Weight [kg]: 73
  • Height [mm]: 1360
  • Weight [kg]: 6.2 (Net)


Technical Data

  • Connection [inch]: G 3/4″ R.H. INTERNAL side
  • Purity: >98%
  • Volume (l): 40


Performance Data

Acetone Contents: 12.4kg

Gas Capacity [m³]: 6.2


Key Points:

  • A-40 cylinder type.
  • High purity (>98%) acetylene.
  • 40-liter cylinder with 6.2m³ gas capacity.
  • Maroon color for easy identification.
  • Contains 12.4kg of acetone for safe storage.


Physical Properties:

  • Maroon-colored gas cylinder.
  • 230mm diameter, 1360mm height.
  • Gross weight: 73kg, Net weight: 6.2kg.
  • G 3/4″ R.H. INTERNAL side connection.
  • Highly pure acetylene (>98%) is suitable for industrial applications.


Direction of Use:

To use acetylene refill, connect the cylinder to the appropriate equipment for welding or cutting. Ensure proper ventilation, and adhere to safety guidelines due to its flammable nature. Store upright and handle with care.


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