CAS No.: | 7440-59-7 |
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Formula: | He |
EINECS: | 231-168-5 |
Constituent: | Industrial Pure Air |
Grade Standard: | Industrial Grade |
Chemical Property: | Inflammable Gas |
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He | ≥99.999% | 99.999% | ||||||||
Ne | <4.0 ppm | 2.2 ppm | ||||||||
H2 | <1.0 ppm | 0.5 ppm | ||||||||
O2+Ar | <1.0 ppm | 0.638 ppm | ||||||||
N2 | <2.0 ppm | 1.54 ppm | ||||||||
CO | <0.5 ppm | 0.21 ppm | ||||||||
CO2 | <0.5 ppm | 0.19 ppm | ||||||||
H2O | <3.0 ppm | 1.62 ppm | ||||||||
CH4 | <0.5 ppm | 0.21 ppm |
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