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Krypton Gas Kr

Krypton is a colorless, odorless, tasteless and non-toxic erotic gas at normal temperature and pressure, containing about 1.1ppm in the air. Does not burn and does not support combustion. Heavier than air, high concentrations of krypton can cause suffocation.
Availability:
Quantity:
  • 7439-90-9

  • OEM/ODM

Technical Indicators

Components/Impurities

High-purity krypton/5.0N

Krypton content

99.999%

Hydrogen H2

≤0.5ppm

Xenon Xe

≤2.0ppm

Oxygen O2 + Argon Ar

≤1.5ppm

Nitrogen N2

≤2.0ppm

Carbon monoxide CO

≤0.3ppm

Carbon dioxide CO2

≤0.4ppm

Total Carbon Methane THC

≤0.3ppm

Water H2O

≤2.0ppm

Carbon tetrafluoride CF4

≤1.0ppm


The packing

Type of cylinder

Gas pressure

Gas volume

Net weight of gas

50L cylinder

20MPa

10000L

35KG

10L cylinder

10MPa

1000L

3.5KG

Cylinder interface: CGA580 or QF-2, thread outlet G5/8 (22.911 outer diameter, 14 teeth/inch, 1.814 thread pitch mm, tooth height 1.162, trail 20.587)


Transport information

Transportation information

Chemical symbol

Kr

CAS No.

7439-90-9

DOT Shipping Class

non-combustible gas

DOT tags

non-combustible gas

Canadian Shipping Classification

2.2

Substance Identification (S) No.

1056

UN No.

UN 1056

Main hazards

high pressure compression

Toxicity (TLV)

non-toxic

Explosive Limits (Toxic)

non-flammable gas

Smell

none


Physical properties

Physical properties

Chemical name

Kr

Molecular weight

83.80

Melting point (73.15kPa)

-157.4℃

Boiling point (101.325kPa)

-153.4℃

Liquid density (-153.35℃,101.325kPa)

2413kg/m³

Gas density (0℃, 101.325kPa)

3.74kg/m³

Relative density (gas, 25℃, 101.325KPa)

2.89

Specific volume (21.1℃. 101.325kPa)

0.2878m3/kg

Gas-liquid volume ratio (15℃, 100kPa)

688L/L

Critical temperature

-63.8℃

Critical pressure

5490kPa

Critical density

908kg/m

Compression factor

Temperature(℃)/Pressure kPa

100kPa 1000kPa 10000kPa

15℃

0.9977 0.9774 0.7742

50℃

0.9985 0.9847 0.8591

Heat of fusion (-157.20℃, 73.1kPa)

19.51kJ/kg

Heat of vaporization (-153.35℃. 101.325kPa)

107.81kJ/kg

Specific heat capacity (25℃, 101.325kPa)

Cp=251.04J/(kg•K) Cv=150.62J/(kg•K)

Specific heat ratio (gas.25℃.101.325kPa)

Cp/Cv=1.667

Vapor pressure (112.05K)

63.329kPa

(155.15K)

1013.250kPa

(206.65K)

5066.250kPa

Viscosity (gas, 0℃, 101.325kPa)

0.02330mPa • S

(liquid, -153.4℃)

0.431mPa·S

Surface tension (-150℃)

16.3mN/m

Thermal conductivity (0℃, 101.325kPa )

0.008834W/(m•K)

(Liquid, -153.4℃)

0.08828W/(m•K)

Refractive index (gas, 0℃, 101.325kPa)

1.000427


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