295345
Helium
≥99.995%
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About This Item
Empirical Formula (Hill Notation):
He
CAS Number:
Molecular Weight:
4.00
UNSPSC Code:
12142100
PubChem Substance ID:
EC Number:
231-168-5
MDL number:
Assay:
≥99.995%
vapor density
0.14 (vs air)
Quality Segment
assay
≥99.995%
impurities
≤5 ppm oxygen, ≤5 ppm water
bp
-268.934 °C (lit.), −268.9 °C (lit.)
mp
-272.2 °C (lit.)
SMILES string
[He]
InChI
1S/He
InChI key
SWQJXJOGLNCZEY-UHFFFAOYSA-N
Packaging
Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.
Compatible with the following:
Compatible with the following:
- Aldrich® lecture-bottle station systems
- Aldrich® lecture-bottle gas regulators
Other Notes
See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation
Legal Information
Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
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signalword
Warning
hcodes
pcodes
Hazard Classifications
Press. Gas Compr. Gas
Storage Class
2A - Gases
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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