Hydrogen
[CAS# 1333-74-0]

Identification

• Classification: Inorganic chemical industry >> Industrial gases such as hydrogen, nitrogen and oxygen
• Name: Hydrogen
• Molecular Formula: H₂
• Molecular Weight: 2.02
• CAS Registry Number: 1333-74-0
• EC Number: 215-605-7

Properties

• Melting point: -259 °C
• Boiling point: -253 °C
• Water solubility: 0.00017 g/100 mL

Safety Data

• Hazard Symbols: GHS02;GHS04 Danger
• Risk Statements: H220
• Safety Statements: S9;S16;S33

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable gases	Flam. Gas	1	H220
Gases under pressure (compressed)	Press. Gas (Comp.)		H280
Gases under pressure (refrigerated liquid)	Press. Gas (Ref. Liq.)		H281
Oxidising gases	Ox. Gas	1	H270
Respiratory sensitization	Resp. Sens.	1	H334
Gases under pressure (liquid)	Press. Gas (Liq.)		H280
Carcinogenicity	Carc.	1A	H350
Germ cell mutagenicity	Muta.	1B	H340

• Transport Information: UN 1049; UN 1966; UN 2034; UN 2600