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Safety Information

00473

Sigma-Aldrich

Hydrogen

≥99.999%

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About This Item

Empirical Formula (Hill Notation):
H2
CAS Number:
1333-74-0
Molecular Weight:
2.02
EC Number:
215-605-7
MDL number:
MFCD00070838
UNSPSC Code:
12141902
PubChem Substance ID:
329747078

vapor density

0.07 (21 °C, vs air)

Quality Level

100

Assay

≥99.999%

autoignition temp.

1060 °F

expl. lim.

74.2 %

bp

−252.8 °C (lit.)

mp

−259.2 °C (lit.)

SMILES string

[H]

InChI

1S/H2/h1H

InChI key

UFHFLCQGNIYNRP-UHFFFAOYSA-N

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Packaging

pressure tin; filling pressure at 15°C: 11 bar; content (15°C, 1 bar): 11 L

Other Notes

Sales restrictions may apply

Pictograms

FlameGas cylinder
GHS02,GHS04

Signal Word

Danger

Hazard Statements

H220,H280

Precautionary Statements

P210 - P377 - P381 - P410 + P403

Hazard Classifications

Flam. Gas 1A - Press. Gas Compr. Gas

Storage Class Code

2B - Aerosol cans and lighters

WGK

nwg

Flash Point(F)

<-238.0 °F - closed cup

Flash Point(C)

< -150 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

00473-BULK:
00473-1EA:
00473-1L:
00473-11L:
00473-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
BCBF9593V
BCBD2331V
BCBB4514
1441879
1401155

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Takashi Kumagai et al.
Nature chemistry, 6(1), 41-46 (2013-12-19)
Although the local environment of a molecule can play an important role in its chemistry, rarely has it been examined experimentally at the level of individual molecules. Here we report the precise control of intramolecular hydrogen-transfer (tautomerization) reactions in single
Hou Wang et al.
Advances in colloid and interface science, 195-196, 19-40 (2013-05-07)
Graphene, as an ideal two-dimensional material and single-atom layer of graphite, has attracted exploding interests in multidisciplinary research because of its unique structure and exceptional physicochemical properties. Especially, graphene-based materials offer a wide range of potentialities for environmental remediation and
Shafeer Kalathil et al.
Biotechnology advances, 31(6), 915-924 (2013-05-18)
Microorganisms naturally form biofilms on solid surfaces for their mutual benefits including protection from environmental stresses caused by contaminants, nutritional depletion or imbalances. The biofilms are normally dangerous to human health due to their inherited robustness. On the other hand
Guancai Xie et al.
Advanced materials (Deerfield Beach, Fla.), 25(28), 3820-3839 (2013-07-03)
Hydrogen production from solar water splitting has been considered as an ultimate solution to the energy and environmental issues. Over the past few years, graphene has made great contribution to improving the light-driven hydrogen generation performance. This article provides a
Judith P Klinman et al.
Annual review of biochemistry, 82, 471-496 (2013-06-12)
The relationship between protein dynamics and function is a subject of considerable contemporary interest. Although protein motions are frequently observed during ligand binding and release steps, the contribution of protein motions to the catalysis of bond making/breaking processes is more
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