Properties and Dangers of Combustible Gases (Methane: CH4)

Main Properties

Transparent, odorless gas.

Soluble in water.

Slightly soluble in water. Soluble in ethanol and others

Specific Gravity


Melting Point


Boiling Point


Ignition Point


Dangers & Toxicity

Ignitibility & Explosiveness

Generate an explosive gas in air. Explosive Range = 5.0% ~ 15.0%

Physical Effects

A suffocating gas with a hypnotic property. 
Breathing air containing the gas for 30 minutes induces a despondent and depressed state.

Source: Riken Keiki


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