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Safety Information

295396

Sigma-Aldrich

Hydrogen

≥99.99%

Synonym(s):

Hydrogen gas

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25 G
¥485.03
100 G
¥1,396.88

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Estimated to ship on2025年5月21日Details

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25 G
¥485.03
100 G
¥1,396.88

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:
12142100
PubChem Substance ID:
24857780
NACRES:
NA.22

¥485.03

Estimated to ship on2025年5月21日Details

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vapor density

0.07 (21 °C, vs air)

Quality Level

200

Assay

≥99.99%

autoignition temp.

1060 °F

expl. lim.

74.2 %

impurities

≤10 ppm oxygen
≤5 ppm water

bp

−252.8 °C (lit.)

mp

−259.2 °C (lit.)

SMILES string

[H]

InChI

1S/H2/h1H

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Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

bp

153 °C/0.3 mmHg (lit.)

bp

155-156 °C (lit.)

bp

-

bp

55-56 °C/30 mmHg (lit.)

density

1.294 g/mL at 25 °C (lit.)

density

1.385 g/mL at 25 °C (lit.)

density

1.242 g/mL at 25 °C (lit.)

density

1.11 g/mL at 25 °C (lit.)

refractive index

n20/D 1.529 (lit.)

refractive index

n20/D 1.446 (lit.)

refractive index

n20/D 1.53 (lit.)

refractive index

n20/D 1.496 (lit.)

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

-

storage temp.

2-8°C

General description

Hydrogen(H2) is colorless, odorless, tasteless, non-toxic, and highly flammable diatomic gas.[1][2]

Application

H2 can be used:
  • To reduce metal oxide to metal.[1][3]
  • In the catalytic hydrogenation of nitro compounds, ketones, and olefinic compounds.[2][4][5][6]

Packaging

Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.

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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control valve

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purge valve

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recommended

Product No.
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regulator

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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

2A - Gases

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 Information

监管及禁止进口产品
  • Specification Sheet

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCW8196
    MKCV9214
    MKCV4921
    MKCT2356
    MKCT9540

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    Find documentation for the products that you have recently purchased in the Document Library.

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    Gold catalysts open a new general chemoselective route to synthesize oximes by hydrogenation of α, β,-unsaturated nitrocompounds with H2
    Corma A, et al.
    Journal of the American Chemical Society, 129(20), 6358-6359 (2007)
    Catalytic reductive transformations of carboxylic and carbonic acid derivatives using molecular hydrogen
    Dub, Pavel A and Ikariya, Takao
    ACS Catalysis, 2(8), 1718-1741 (2012)
    Effects of reduction temperature and metal- support interactions on the catalytic activity of Pt/γ-Al2O3 and Pt/TiO2 for the oxidation of CO in the presence and absence of H2
    Alexeev OS, et al.
    The Journal of Physical Chemistry B, 109(49), 23430-23443 (2005)
    Kinetics of reduction of iron oxides by H2: Part I: Low temperature reduction of hematite
    Pineau A, et al.
    Thermochimica Acta, 447(1), 89-100 (2006)
    Metal-free catalytic olefin hydrogenation: low-temperature H2 activation by frustrated Lewis pairs
    Greb L, et al.
    Angewandte Chemie (International ed. in English), 51(40), 10164-10168 (2012)
    View All Related Papers

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