7439-90-9

7439-90-9 structure
7439-90-9 structure

Name krypton atom
Synonyms krypton
(79Kr)kryptonato(2-)
Krypton,compressed
EINECS 231-098-5
MFCD00016158
Density 3.736
Boiling Point -153ºC
Melting Point -157ºC
Molecular Formula Kr
Molecular Weight 83.79800
Exact Mass 83.91150
Stability Stable and unreactive; not combustible.
Water Solubility 59.4mL/1000g H2O (20°C) [KIR78]; Henry’s law constants, k×10?4: 3.685 (70.2°C), 4.017 (175.0°C), 3.761 (175.0°C), 2.392 (252.5°C) [POT78]
Risk Phrases R9
Safety Phrases 9-38
RIDADR UN 1950 2
WGK Germany 3
Hazard Class 2.2
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