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He

He

CAS No.: 7440-59-7
EINECS No.: 231-168-5
UN No.: 1963
Molecular weight: 4.0026
Appearance: Colorless, Odorless
Melting point: -272.2 ℃
Boiling point: -268.60 ℃
DOT Class: 2.2
Label: Non-flammable gas

 
Availability:
Quantity:

Packing Specifications


Type of Cylinder

Content

Pressure

Capacity

Valve

Capacity

Bar

PSIG

40L

CGA580

5m³

150

2175

47L

CGA580

7m³

150

2175

50L

CGA580

10m³

200

2900


High Purity He 99.999%


Specification

99.999%

N2

≤ 2.0 ppm

O2+Ar

≤ 1.0 ppm

H2

≤ 1.0 ppm

CO

≤ 0.5 ppm

CO2

≤ 0.5 ppm

Ne

≤ 1.0 ppm

CH4

≤ 0.5 ppm

Moisture

≤ 0.5 ppm


Ultra-High Purity He 99.9999%


Specification

99.9999%

N2

≤ 0.5 ppm

O2+Ar

≤ 0.2 ppm

CO

≤ 0.1 ppm

CO2

≤ 0.1 ppm

CH4

≤ 0.1 ppm

Moisture

≤ 0.2 ppm


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