Middlesex Gases is now making dry ice in-house. To request a quote or to learn more about the delivery options, visit our dry ice page. Click here. |
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. Liquid Helium at -452°F is the coldest liquefied gas. Middlesex Gases supplies Liquid Helium to commercial customers in Massachusetts, New Hampshire, Rhode Island, Connecticut and throughout New England.
Chemical Symbol | Lhe (He) |
Molecular Weight | N/A |
Specific Volume | 30L (LT30) 60L (LT60) 100L (LT100) |
CAS Registry Number | 7440-59-7 |
DOT Proper Name | Helium, Refrigerated Liquid |
Hazard Class | 2.2 |
ID Number | UN1963 |
Labels | Nonflammable Gas |
SPECIFICATIONS SUBJECT TO CHANGE
Grade | Purity | Impurity | Specifications | Equipment Recommended |
---|---|---|---|---|
5.0 | 99.999% | O2 H2O CO2 CO THC N2 H2 Ne | <1ppm <2ppm <1ppm <1ppm <0.1ppm <5ppm <1ppm <2ppm | 3008 Series |