Deuterium
[CAS# 7782-39-0]

Identification

• Name: Deuterium
• Synonyms: Deuterium (D2); Deuterium mol.; Deuterium molecule; Dideuterium; Diplogen; Hydrogen, isotope of mass 2; Hydrogen-2; Hydrogen-d2
• Molecular Formula: D₂
• Molecular Weight: 4.03
• CAS Registry Number: 7782-39-0
• EC Number: 231-952-7

Properties

• Density: 0.2059 g/cm³ (-269.0 ºC)^*
• Boiling point: -249.48 ºC^**

^* Megaw, H. D.; Nature (London, United Kingdom) 1936, V138, P244.

^** Grilly, E. R.; Journal of the American Chemical Society 1951, V73, P843-6.

Safety Data

• Hazard Symbols: F+
• Risk Codes: R12
• Safety Description: S9;S16;S33

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Gases under pressure (compressed)	Press. Gas (Comp.)		H280
Flammable gases	Flam. Gas	1	H220

• Transport Information: UN 1957 2.1