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Ethylene Gas C2H4

Ethylene is a colourless, narcotic gas with a slightly sweet smell of hydrocarbons at room temperature and pressure, which is chemically active and can form Explosive mixture, very easy to burn and explode.
Availability:
Quantity:
  • 74-85-1

  • OEM/ODM

Technical Indicators

Components/Impurities

Ethylene/3.0N

Acetylene/3.5N

Ethylene Content

99.9%

99.95%

Methane+EthaneCH4+C2H6

≤1000ppm

≤500ppm

C3 and above C3

≤50ppm

≤20ppm

Hydrogen H2

≤10ppm

≤5.0ppm

Carbon Monoxide CO

≤5.0ppm

≤2.0ppm

Carbon Dioxide CO2

≤10ppm

≤5.0ppm

Oxygen O2

≤5.0ppm

≤2.0ppm

Water H2O

≤10ppm

≤5.0ppm

Acetylene C2H2

≤10ppm

≤5.0ppm


The Packing

Type of Cylinder

Gas Pressure

Gas Volume

N.W. of Gas

40L cylinder

About 5MPa

13m3

11kg

10L cylinder

About 5MPa

2m3

2.5kg

Cylinder interface: QF-30, outlet thread W21.8×1/14-LH


Transport Information

Transport Information

Chemical Symbol

C2H4

GAS No.

74-85-1

DOT Shipping Class

flammable gas

DOT Tags

flammable gas

Canadian Shipping Classification

2.1

Substance Identification (S) No.

1962

UN No.

UN1962

Main Hazards

High pressure compression, flammable

Toxicity (TLV)

asphyxia

Explosive Limits (Toxic)

3.1%~32%

Smell

Hydrocarbon-specific sweetness


Physical Properties

Physical Properties

Chemical Name

C2H4

Molar Mass

28.054

Liquid Density (-103.72℃, 1atm)

567.2kg/m3

Gas Density (273k, 1atm)

1.261kg/m3

Relative Density (0℃, 1atm) (air=1)

0.975

Gas Specific Volume (21℃. 100kPa)

0.8615m3/kg

Boiling Point at 1 atm

-103.7℃

Freezing Point at 1 atm

-169.2℃

Critical Temperature

9.9℃

Critical Pressure

5120kPa

Critical Density

266.2kg/m3

Compression Factor

Temperature(℃)/Pressure

100kPa 1000kPa 5000kPa 10000kPa

15℃

0.99367 0.9342 0.5342 0.3214

50℃

0.9988 0.9553 0.7488 0.4752

Heat of Fusion (-169.2℃)

119.44kJ/kg

Heat of Vaporization (-103.72℃, 101.325kPa)

482.86kJ/kg

Specific Heat Capacity (gas, 25℃, 100kPa)

Cp=1.548J/(kg•K) cv=1.244J/(kg•K)

Specific Heat Ratio (gas, 25℃, 100kPa)

Cp/Cv=1.244

Vapor Pressure (182.35k) (244.05k) (283.05k)

202.65kPa 2026.5kPa 5116.9kPa

Viscosity (100kPa, 0℃)

0.0095mPa • S

Surface Tension (-103.78℃, 101.325kPa)

16.6mN/m

Thermal Conductivity (100kPa, 0℃)

0.016831W/(m•K)

Refractive Index (0℃, 101.325kPa, 5462.26A)

N=1.0007198

Flammable Range in Air (20℃, 101.325kPa)

3.1%~32%

The lowest self-ignition point in air (101.325kPa)

520℃

Flame temperature during equivalent combustion in air

2357℃

Maximum flame speed during equivalent combustion in air

0.74m/s

Flammable range in oxygen (20℃, 101.325kPa)

2.9%~80%

The lowest auto-ignition point in oxygen (101.325kPa)

485℃

Flame temperature when burning equivalent in oxygen

2940℃

Maximum flame speed during equivalent combustion in oxygen

5.34m/s

Heat of combustion in oxygen

63514kJ/m³ high 59453kJ/m3 low

Flash point

-136℃

The concentration in the air that produces the maximum explosion pressure

8%

Maximum explosion pressure

8.9kg/cm3

Most flammable concentration

6.5%

Toxicity level

1

Flammability level

4

Explosiveness level

2


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