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295396

Sigma-Aldrich

Hydrogen

≥99.99%

Sinonimo/i:

Hydrogen gas

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About This Item

Formula empirica (notazione di Hill):
H2
Numero CAS:
1333-74-0
Peso molecolare:
2.02
Numero CE:
215-605-7
Numero MDL:
MFCD00070838
Codice UNSPSC:
12142100
ID PubChem:
24857780
NACRES:
NA.22

Densità del vapore

0.07 (21 °C, vs air)

Livello qualitativo

200

Saggio

≥99.99%

Temp. autoaccensione

1060 °F

Limite di esplosione

74.2 %

Impurezze

≤10 ppm oxygen
≤5 ppm water

P. ebollizione

−252.8 °C (lit.)

Punto di fusione

−259.2 °C (lit.)

Stringa SMILE

[H]

InChI

1S/H2/h1H
UFHFLCQGNIYNRP-UHFFFAOYSA-N

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Descrizione generale

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

Applicazioni

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]

Confezionamento

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

Altre note

See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation

Note legali

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

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Pittogrammi

FlameGas cylinder
GHS02,GHS04

Avvertenze

Danger

Indicazioni di pericolo

H220,H280

Classi di pericolo

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

Codice della classe di stoccaggio

2A - Gases

Classe di pericolosità dell'acqua (WGK)

nwg

Punto d’infiammabilità (°F)

<-238.0 °F - closed cup

Punto d’infiammabilità (°C)

< -150 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)

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Certificati d'analisi (COA)

Lot/Batch Number
MKCW8196
MKCV9214
MKCV4921
MKCT2356
MKCT9540

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Angewandte Chemie (International ed. in English), 51(40), 10164-10168 (2012)
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)
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)
Catalytic reductive transformations of carboxylic and carbonic acid derivatives using molecular hydrogen
Dub, Pavel A and Ikariya, Takao
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Domande

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 risposta

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Utile?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 risposta

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Utile?

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