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Main / Our products / Hydrocarbon cuts / Methylacetylene-Allene Fraction

Methylacetylene-Allene Fraction

Technical  Characteristics 

Parameter

MAF

Acetylene

Propane

Safety, shock sensitivity

Stable

Unstable

Stable

Explosive limit in oxygen,%

2.5 - 60

2.3 - 93

2.4 - 57

Explosive limit in air, %

3.4 - 10.8

2.2 - 81

2.0 - 9.5

Allowable pressure limit for the reducer, 15 kgf/cm2

Cylinder

Cylinder

Cylinder

Rate of combustion in oxygen, mm/sec

4697

6097

3718

Tendency to back impact

Insignificant

Significant

Insignificant

Toxicity

Insignificant

Insignificant

Insignificant

Reactions with base metals

Avoid alloys containing more than 65% of copper

Avoid alloys containing more than 70% of copper

Insignificant restrictions

Specific weight at 15.6 °C (liquid), kg/m3

575

-

513

Specific weight at 15.6 °C of 1 liter (gas), kg

0.55

0.91

0.54

Specific weight at 15.6 °C (gas in the air), kg/m3

1.46

0.96

1.52

Flame temperature, °C

2927

3087

2526

Lower heating value of the gas mixture under normal conditions

21000

12600

21795

Overall heating value (after evaporation)

49000

50000

51000

 

Packing - in tanks or cylinders for liquefied gases.

MAF is used as a substitute of acetylene in all processes of flame treatment of metals, in some other processes, and in pharmacology and pharmaceutics.

Quality indicators

Quality indicators

Norm

Volume fraction of methylacetylene and allene, % not less

65-75

Volume fraction of hydrocarbons C4, %, not more

6

Volume fraction of acetonitrile, %, not more

0.5

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