CAS 7439-90-9 Kr Colorless Odorless Tasteless Gas for Fluorescent Lamps

Basic Information
Place of Origin: China
Brand Name: Newradar Gas
Certification: ISO/DOT/GB
Model Number: N/A
Minimum Order Quantity: 1cubic meter
Price: negotiable
Packaging Details: 8L , 10L , 44L , 50L
Delivery Time: 10 working days after received your payment
Payment Terms: T/T, L/C, Western Union
Supply Ability: 4000 cubic meter per month
Detail Information
Product Name: Krypton Purity: 99.999%
Atomic No.: 36 Cylinder Size: 8L,10L,44L,49L
CAS No.: 7439-90-9 Phase: Gas
Density: 3.749 G/L Un Number: 1056
High Light:

inert noble gases


chemistry noble gases

Product Description

CAS 7439-90-9 Kr Colorless Odorless Tasteless Gas for Fluorescent Lamps






Krypton, like the other noble gases, is used in lighting and photography. Krypton light has many spectral lines, and krypton plasma is useful in bright, high-powered gas lasers, each of which resonates and amplifies a single spectral line. Krypton fluoride also makes a useful laser.


Krypton is characterized by several sharp emission lines the strongest being green and yellow. Krypton is one of the products of uranium fission. Solid krypton is white and has a face-centered cubic crystal structure, which is a common property of all noble gases.


Newradar Special Gases Material Safety Data Sheets (MSDS) are available for Krypton gas and should be used as guidelines in regard to first aid, methods of storage, handling and general use of Krypton.




Component Specification Concentration
KRYPTON 99.999% >99.999%
HYDROGEN(H2) ≤0.5 ppm ≤0.5 ppm
OXYGEN+AIR (O2+Ar) ≤1.5 ppm ≤1.5 ppm
NITROGEN (N2) ≤2.0ppm ≤2.0 ppm
CARBON MONOXIDE (CO) ≤0.3ppm ≤0.3ppm
CARBON DIOXIDE(CO2) ≤0.4ppm ≤0.4 ppm
CH4 ≤0.3 ppm ≤0.3 ppm
XENON(Xe) ≤2.0 ppm ≤2.0 ppm
MOISTURE (H2O) ≤2.0 ppm ≤2.0 ppm
TETRAFLUOROMETHANE (CF4) ≤1.0 ppm ≤1.0 ppm


Physical properites


Physical properties
Chemical name kr
Molecular weight 83.80
Density of the gas at 70°F (21,1°C), 1 atm 0.2172 lb/ft3, 3.479 kg/m3
Specific gravity of the gas at 70°F (21 ,1°C), 1 atm 2.899
Specific volume of the gas at 70ºF (21,1°C), 1 atm 4.604 ft3/lb, 0.287 m3/kg
Boiling point at 1 atm -244.0ºF, -153.4ºC
Melting point at 1 atm -251º F, -157ºC
Critical temperature at 1 atm -82.8ºF, -63.8ºC
Critical density 56.7 lb/ft3, 908 kg/m3
Critical pressure 798.0 psia, 55.02 bar
Triple point -251.3ºF, -157.4ºC
Latent heat of vaporization at normal boiling point 46.2 Btu/lb, 107.5 kJ/kg
Latent heat of fusion at triple point 8.41 Btu/lb, 19.57 kJ/kg

Specific heat of the gas at 70ºF (21,1°C), 1 atm Cp


0.060 Btu/(lb) (ºF) 0.251 kJ/(kg) (ºC)

0.035 Btu/(lb) (ºF) 0.146 kJ/(kg) (ºC)




1. Krypton is used in some photographic flashes for high speed photograph.


2. Krypton gas is also combined with other gases to make luminous signs that glow with a bright

   greenish-yellow light.


3. Krypton is mixed with argon in energy efficient fluorescent lamps, reducing the power consumption,

   but also reducing the light output and raising the cost.


4. Krypton (along with xenon) is also used to fill incandescent lamps to reduce filament evaporation and

   allow higher operating temperatures.A brighter light results with more blue color than conventional 

   incandescent lamps.


5. Krypton's white discharge is often used to good effect in colored gas discharge tubes, which are simply

   painted or stained to create the desired color (for example, "neon" type multi-colored advertising signs

   are often entirely krypton-based).


6. Krypton-83 has application in magnetic resonance imaging (MRI) for imaging airways. In particular, it

   enables the radiologist to distinguish between hydrophobic and hydrophilic surfaces containing an



CAS 7439-90-9 Kr Colorless Odorless Tasteless Gas for Fluorescent Lamps 0

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