氦气
A colorless,non-flammable,high pressure gas.(一种无色,不燃,高压气体)
Formula(分子式): He
Molecular weight(分子量): 4.003
Boiling point(沸点): -268.94℃,452.1°F;
Melting point(融点): -272.2℃,-457.96°F.
Specific Volume(比容): 6.06m3/kg(21.1℃,101.325KPa)
97.1ft3/lb(70°F,14.696psia)
UN Number(UN号码): UN1046
DOT Classification(DOT类别): 2.2(Nonflammable Gas)(不燃性气体)
DOT Label(DOT标签): NON-FLAMMABLE GAS(不燃性气体)
Cylinder Connection(钢瓶接口): CGA/DISS/JIS--580/718/W22-14R
Grsde(级别) 6N
Purity(纯度) 99.9999%
Guaranteed Specification(保证规格)
Impurity(非组分) |
Specification(标准) |
Oxygen(氧) |
≤0.05 ppmv |
Nitrogen(氮) |
≤0.4 ppmv |
Carbon Dioxide(二氧化碳) |
≤0.1 ppmv |
Carbon Monoxide(一氧化碳) |
≤0.05 ppmv |
Methane(甲烷) |
≤0.1 ppmv |
Water(水) |
≤0.2 ppmv |
Cylinder Size(liter)钢瓶体积(升) |
Content(Kg,lbs)气含量(公斤,磅) |
43.8 |
6.91,244 |