We offer the full range products to cover your specific application needs. In addition to pure gases, our Mig and Tig gas mixtures address a variety of applications and materials. Deliveries are dispatched from the store nearest you, So whatever your method and application, Maine Oxy has the gas you need.
Acetylene
Acetylene, a compound of carbon and hydrogen, is a colorless, highly flammable gas. It is slightly lighter than air and has a garlic-like odor. Acetylene is manufactured by the reaction of water with calcium carbide, and is dissolved in acetone as a stabilizer for storage and transportation.
Acetylene is used for chemical synthesis and for oxy-acetylene cutting, heating and welding.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Acetylene AA Grade |
99.6% |
Oxygen plus CH4 |
< 4000 ppm |
|
Acetylene Industrial |
98.0% |
PH3 |
< 20 ppm |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: C2H2 Molecular Weight: 26.04 Specific Volume 14.7 ft3/lb (0.91 m3/kg) CAS Registry Number: 74-86-2 |
DOT Proper Name: Acetylene, dissolved Hazard Class: 2.1 I.D. Number: UN 1001 Labels: Flammable Gas |
Sizes:
| Cylinder Name | Cubic Foot | PSI | Dimensions (inches) |
|---|---|---|---|
|
MC |
10 |
250 |
15 x4 |
|
B |
40 |
250 |
23 x 6.5 |
|
WQ |
75 |
250 |
31 x 7 |
|
WS |
140 |
250 |
40 x 8.5 |
|
WK |
250 |
250 |
42 x 13 |
|
WTL |
390 |
250 |
44 x 14 |
Air
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Ultra Zero |
Total Hydrocarbons Moisture Oxygen Carbon Dioxide Carbon Monoxide |
< 0.1 ppm < 3 ppm 19.5% to 23.5% < 1 ppm < 1 ppm |
|
|
Zero |
Total Hydrocarbons Oxygen |
1 ppm 19.5% to 23.5% |
|
|
Extra Dry |
Moisture Oxygen |
< 8 ppm 19.5% to 23.5% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: N/A Molecular Weight: 28.96 Specifi c Volume 13.3 ft3/lb (0.83 m3/kg) CAS Registry Number: 132259-10-0 |
DOT Proper Name: Air, Compressed Hazard Class: 2.2 I.D. Number: UN 1002 Labels: Nonflammable Gas |
| Standard Cylinder Sizes * | Contents ft3/m3 | Cylinder Pressure PSIG | CGA Valve Connection |
|---|---|---|---|
| 300 | 284 | 2400 | 590 |
| 200 | 213 | 2015 | 590 |
| 80 | 79 | 2015 | 590 |
Argon
Argon is a non-flammable, colorless, odorless, chemically inactive gas which comprises less than 1.0% of the atmospheric air. Commercial argon is the product of air separation, where liquefaction and distillation produce a grade of low purity from which oxygen must be removed (by combining it with hydrogen to produce water).
Argon is widely used as a fill gas in incandescent and fluorescent lamps, and is an inert shielding gas for arc welding to protect the weld from contaminants.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
| Argon Research | 99.9999% | Oxygen
Moisture Nitrogen Total Hydrocarbons CO/CO2 |
< 0.15 ppm
< 0.15 ppm < 0.40 ppm < 0.10 ppm < 0.10 ppm |
| Argon N2 Free | 99.999% | Oxygen
Moisture Nitrogen Total Hydrocarbons |
< 2 ppm
< 2 ppm < 5 ppm < 0.5 ppm |
| Argon Ultra High Purity | 99.999% | Oxygen
Moisture Total Hydrocarbons |
< 2 ppm
< 2 ppm < 0.5 ppm |
| Argon Pre-Pure | 99.998% | Oxygen
Moisture Total Hydrocarbons |
< 5 ppm
< 5 ppm < 2 ppm |
| Argon Zero | 99.998% | Total Hydrocarbons | < 0.5 ppm |
| Argon Industrial | 99.99% |
| Technical Information: | Shipping Information: |
|---|---|
| Chemical Symbol: Ar
Molecular Weight: 39.948 Specific Volume 9.7 ft3/lb (0.606 m3/kg) CAS Registry Number: 7440-37-1 |
DOT Proper Name: Argon, Compressed
Hazard Class: 2.2 I.D. Number: UN 1006 Labels: Nonflammable Gas |
| Cylinder Name | Cubic Foot | PSI | Dimensions (inches) |
|---|---|---|---|
| R | 20 | 2015 | 18 x 5.5 |
| 60 | 60 | 2015 | 22 x 7 |
| Q | 80 | 2015 | 36 x 7 |
| S | 141 | 2015 | 46 x 7.25 |
| K | 227 | 2015 | 51 x 9 |
| T | 305 | 2400 | 55 x 9.25 |
Carbon Dioxide
Carbon Dioxide is a non-flammable, colorless, odorless gas with an acidic taste. Atmospheric air contains only 0.03% of Carbon Dioxide, so it is not a commercially feasible source; rather, numerous manufacturing processes furnish by-product streams from which carbon dioxide may be obtained, such as the combustion of coal and natural gas.
Carbon Dioxide is used to carbonate soft drinks, freeze and process food, and acts as a shielding gas in the arc welding process. It is also used extensively to fill fire extinguishers.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Carbon Dioxide Research |
99.999% |
Oxygen Nitrogen Carbon Monoxide Hydrogen Methane Water |
< 1 ppm < 1 ppm < 0.1 ppm < 1 ppm < 0.5 ppm < 2 ppm |
|
Carbon Dioxide Laser |
99.995% |
Moisture Oxygen Total Hydrocarbons |
< 5 ppm < 5 ppm < 1 ppm |
|
Carbon Dioxide Instrument |
99.99% |
Moisture Oxygen Nitrogen |
< 10 ppm < 20 ppm < 50 ppm |
|
Carbon Dioxide Bone Dry |
99.8% |
Moisture |
< 20 ppm |
|
Carbon Dioxide Industrial |
99.8% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: CO2 Molecular Weight: 44.04 Specifi c Volume 8.76 ft3/lb (0.55 m3/kg) CAS Registry Number: 124-38-9 |
DOT Proper Name: Carbon Dioxide Hazard Class: 2.2 I.D. Number: UN 1013 Labels: Nonflammable Gas |
| Cylinder Name | Lbs. | PSI | Dimensions (inches) |
|---|---|---|---|
|
5 |
5 |
400 |
19 x 5 |
|
10 |
10 |
400 |
21 x 5 |
|
15 |
15 |
400 |
23 x 6 |
|
20 |
20 |
400 |
27 x 8 |
|
50 |
50 |
400 |
56 x 9 |
|
75 |
75 |
400 |
60 x 9 |
Helium
Helium is a non-flammable, colorless, odorless gas which is the second lightest element known. Its concentration in the atmosphere of just 0.0005% also makes it one of the most rare gases. Natural gas wells store helium and provide the principal source of this gas, which is extracted by a stripping process.
After hydrogen, helium has the smallest molecular cross-section of any gas. Its permeation rate and ease of detectability make it an ideal medium for leak detection. Helium is widely used as a shielding gas for arc welding and as an inter gas in the production of reactive materials, and safely fill the need to replace hydrogen in lighter-than-air applications.
Helium is also used for balloon filling.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Helium 7.0 |
99.99999% |
Total of all impurities |
< 100 ppb |
|
Helium Research |
99.9999% |
Oxygen Moisture Nitrogen Total Hydrocarbons Carbon Monoxide Carbon Dioxide Total of all impurities |
< 0.5 ppm < 1 ppm < 1 ppm < 0.2 ppm < 0.1 ppm < 0.1 ppm < 1 ppm |
|
Helium Ultra High Purity |
99.999% |
Oxygen Moisture Total Hydrocarbons |
< 2 ppm < 2 ppm < 0.5 ppm |
|
Helium Pre-Pure |
99.997% |
Oxygen Moisture |
< 5 ppm < 5 ppm |
|
Helium Industrial |
99.9% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: He Molecular Weight: 4.003 Specific Volume 96.7 ft3/lb (6.0 m3/kg) CAS Registry Number: 7440-59-7 |
DOT Proper Name: Helium, Compressed Hazard Class: 2.2 I.D. Number: UN1046 Labels: Non-flammable Gas |
| Cylinder Name | Cubic Foot | PSI | Dimensions (inches) |
|---|---|---|---|
|
Cylinder Name |
Cubic Foot |
PSI |
Dimensions (inches) |
|
R |
20 |
2015 |
19 x 5 |
|
60 |
58 |
2015 |
22 x 7 |
|
Q |
74 |
2015 |
36 x 7 |
|
S |
124 |
2015 |
46 x 7.25 |
|
K |
201 |
2015 |
51 x 9 |
|
T |
267 |
2400 |
55 x 9.25 |
Hydrogen
Hydrogen, the lightest element, is a colorless, odorless, tasteless and flammable gas found at concentrations of about 100 ppm (0.01%) in the air. Sources for this gas are numerous, including dissociation of ammonia, electrolysis of water, and extraction from by-product streams of chemical and petroleum processing.
Hydrogen is widely used in the petroleum refinery processes of hydro treating and hydrocracking, and serves the food industry by turning inedible grease into soaps and animal feeds. In the welding industry, Hydrogen is used as a fuel in underwater oxy-hydrogen torches, and for metal welding and brazing. The space program also uses hydrogen as a rocket fuel when weight and energy considerations are paramount.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Hydrogen Research |
99.9999% |
Oxygen Water Nitrogen THC CO2 + CO |
< 0.2 ppm < 0.5 ppm < 0.3 ppm < 0.1 ppm < 0.1 ppm |
|
Hydrogen Ultra High Purity |
99.999% |
Moisture Oxygen Nitrogen Total Hydrocarbons |
< 3 ppm < 1 ppm < 5 ppm < 1 ppm |
|
Hydrogen Zero |
99.995% |
Total Hydrocarbons |
< 0.5 ppm |
|
Hydrogen Pre-Pure |
99.99% |
Moisture Oxygen |
< 10 ppm < 20 ppm |
|
Hydrogen Industrial |
99.8% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: H2 Molecular Weight: 2.02 Specific Volume 192 ft3/lb (11.9 m3/kg) CAS Registry Number: 1333-74-0 |
DOT Proper Name: Hydrogen, Compressed Hazard Class: 2.1 I.D. Number: UN 1049 Labels: Flammable Gas |
| Cylinder Name | Cubic Foot | PSI | Dimensions (inches) |
|---|---|---|---|
|
R |
20 |
2015 |
18 x 5.5 |
|
60 |
60 |
2015 |
22 x 7 |
|
Q |
80 |
2015 |
36 x 7 |
|
S |
122 |
2015 |
46 x 7.25 |
|
K |
197 |
2015 |
51 x 9 |
|
T |
261 |
2400 |
55 x 9.25 |
Nitrogen
Nitrogen is a colorless, odorless, non-flammable gas which constitutes over 78.0% of atmospheric air. Commercial nitrogen is the product of air separation, and is used for inerting electrical systems and chemical manufacturing, and for food processing and packaging.
Due to its reactivity under the influence of high heat and chemicals, nitrogen is not used as a shielding gas in the welding industry. It is, however used as a purging and refrigerant gas, and has powered many impact wrenches in the motorsports world.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Nitrogen Research |
99.9999% |
Oxygen Moisture Total Hydrocarbons CO/CO2 |
< 0.15 ppm < 0.15 ppm 0.10 ppm 0.10 ppm |
|
Nitrogen Ultra High Purity |
99.999% |
Oxygen Moisture Total Hydrocarbons |
< 2 ppm < 3 ppm < 0.5 ppm |
|
Nitrogen Prepurified |
99.998% |
Oxygen Moisture |
< 5 ppm < 5 ppm |
|
Nitrogen Zero |
99.998% |
Total Hydrocarbons |
< 0.5 ppm |
|
Nitrogen Industrial |
99.9% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: N2 Molecular Weight: 28.01 Specific Volume 13.8 ft3/lb (0.86 m3/kg) CAS Registry Number: 7727-37-9 |
DOT Proper Name: Nitrogen, Compressed Hazard Class: 2.2 I.D. Number: UN 1066 Labels: Nonflammable Gas |
| Cylinder Name | Cubic Foot | PSI | Dimensions (inches) |
|---|---|---|---|
|
R |
20 |
2015 |
18 x 5.5 |
|
60 |
60 |
2015 |
22 x 7 |
|
Q |
80 |
2015 |
36 x 7 |
|
S |
138 |
2265 |
48 x 7 |
|
K |
277 |
2265 |
54 x 9 |
|
T |
301 |
2400 |
60 x 10 |
Oxygen
Oxygen is a colorless, odorless and non flammable gas which is the earth’s most abundant element. Combined in water as H2O and in other combinations, oxygen make up close to 50% of the earth’s crust. The principal uses of oxygen stem from its strong oxidizing and life-sustaining properties.
Oxygen is used in the metals industry in conjunction with acetylene and other fuel gases in metal cutting, heating, welding, hardening, and scarfing. In the chemical and petroleum industries, oxygen is used in the production of synthetic gas from coal and liquid fuels.
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Oxygen Research |
99.999% |
Argon Moisture Nitrogen Total Hydrocarbons CO/CO2 |
< 5 ppm < 2 ppm < 5 ppm < 1 ppm < 1 ppm |
|
Oxygen Ultra High Purity |
99.993% |
Argon Moisture Nitrogen Total Hydrocarbons |
< 40 ppm < 3 ppm < 10 ppm < 0.5 ppm |
|
Oxygen Zero |
99.8% |
Total Hydrocarbons |
< 0.5 ppm |
|
Oxygen Extra Dry |
99.6% |
Moisture |
< 10 ppm |
|
Oxygen Industrial |
99.9% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: O2 Molecular Weight: 32 Specific Volume 12.1 ft3/lb (0.76 m3/kg) CAS Registry Number: 7782-44-7 |
DOT Proper Name: Oxygen, Compressed Hazard Class: 2.2 I.D. Number: UN 1072 Labels: Nonflammable Gas, Oxidizer |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: O2 Molecular Weight: 32 Specific Volume 12.1 ft3/lb (0.76 m3/kg) CAS Registry Number: 7782-44-7 |
DOT Proper Name: Oxygen, Compressed Hazard Class: 2.2 I.D. Number: UN 1072 Labels: Nonflammable Gas, Oxidizer |
Propane
We offer multiple purities and cylinder sizes. See the chart below.
| Grade | Purity | Impurity | Specification |
|---|---|---|---|
|
Propane Research |
> 99.9% |
Total Impurities |
< 1000 ppm |
|
Propane Instrument |
> 99.5% |
Total Impurities |
< 0.5% |
|
Propane Chemically Pure |
> 99.0% |
Total Impurities |
< 1.0% |
|
Propane Industrial |
98.0% |
| Technical Information: | Shipping Information: |
|---|---|
|
Chemical Symbol: C3H8 Molecular Weight: 44.11 Specific Volume 8.5 ft3/lb (0.531 m3/kg) CAS Registry Number: 74-98-6 |
DOT Proper Name: Propane Hazard Class: 2.1 I.D. Number: UN1978 Labels: Flammable Gas |
