Industrial Gases

Keen Compressed Gas Co. supplies a full range of industrial gases in a variety of cylinder sizes for all your gas needs. Our fill plant located in Wilmington, Delaware has the capability of providing pure gases along with customized mixing of component gases to meet all your welding needs. We offer these gases in high pressure cylinders, liquid containers, Microbulk, Bulk and other containers. We offer leasing options and rental cylinders.  Some sizes can be purchased outright.

Acetylene is a colorless and tasteless gas with a garlic-like odor. It also the hottest and most efficient of all fuel gases, providing high levels of productivity due to effective, localized heating with a minimum of thermal waste.

In our industry, acetylene is primarily used for Oxy-Fuel cutting and welding. Keen offers acetylene in bulk and single cylinder units.

Argon is a colorless, odorless and tasteless inert gas which has no toxic properties. A member of the rare gas chemical family, argon constitutes less than 1% of the atmosphere and is heavier than air. Liquid argon at — 302ºF is clear and odorless.

Argon has several different uses in several industries, however, it is most company used as a shield gas for arc welding.

Carbon Dioxide

Carbon Dioxide is a colorless gas with a slightly pungent odor and biting taste. It will not burn, support combustion or sustain life. It is about 1.5 times heavier than air. Normally stored as a liquid, carbon dioxide exists only as a solid or gas at room conditions. The solid CO2 snow transforms (sublimes) directly to a gas without passing through the liquid phase.

Carbon Dioxide is known in the food industry for carbonating drinks and preserving packaged foods. The non-flammable properties make it a popular pressurizing gas for aerosols.


Helium is a colorless, odorless and tasteless inert gas which has no toxic properties. A member of the rare gas chemical family, it is 1/7 as heavy as air , and is mainly sourced from natural gas wells. Liquid Helium at -452ºF is the coldest liquefied gas.

Helium has a wide range of uses including cooling superconductive magnets coils in MRI machines, pressurizing rocket rule, creating inert atmospheres for welding and heat treatment, and inflating balloons and even airbags.


Hydrogen is the lightest gas known. It is a colorless, odorless and tasteless gas and is flammable and nontoxic at atmospheric temperatures and pressures. Lighter than air, hydrogen burns with an invisible, clean flame.

Hydrogen is often mixed with argon to create a range of argon/hydrogen shielding gases for TIG and plasma welding. It can also be combined with oxygen for underwater flame cutting. Hydrogen is used in the production of carbon steels, special metals and semiconductors; it powers flames and torches in laboratories in the chemical industry.


Nitrogen constitutes 78% of the atmosphere and is a constituent of all living tissues. Under normal conditions, nitrogen is a colorless, odorless and tasteless inert gas which has no toxic properties and is slightly lighter than air. As a liquid at -320 ºF it has a water-white appearance and must be handled with care due to its low temperature.


Oxygen is the most abundant element on the earth’s surface and as a gas is indispensable in respiration. Composing almost 21% of the atmosphere, oxygen is a colorless, odorless and tasteless gas which supports combustion. As a liquid at -297ºF, oxygen is light blue in color and is approximately 14% heavier than water.


Propylene is a colorless fuel gas with a naturally pungent smell. It is similar to propane, but has a double bond which gives it a combustion advantage. Propylene is extremely flammable and non-toxic.

Propylene is a favorable alternative to propane for heating and cutting because of its superior combustion performance.

Propylene is most commonly used for flame cutting, HVOF thermal spray and brazing.

Keen guarantees commercial grade product delivered as a liquid meets the commercial CGA specifications. Keen does not normally guarantee commercial grade product delivered as a compressed gas meets the gaseous specification listed because gas purities are affected by normal cylinder filling practices and process procedures which may compromise the integrity of the product.