Inorganic chemicals:

Acetylene chemical formula C₂H₂. is produced by decomposition of calcium carbide by water, and filled into pressure cylinders inner lined with a porous matter that is saturated by a solution, mostly by acetone.

PROPERTIES
Acetylene is a colourless gas of etheric smell. Technical acetylene smells like garlic traces. Together with air, it forms an explosive mixture within the range of 1.5 to 80.5 volume %.

TECHNICAL DATA:

Acetylene content (C2H2), min.	% vol.	99
Boiling point at 0,101 MPa	°C	-81
Density at 0 °C and 0,101 MPa	kg/m3	1,1709
Content of air, max.	% obj.	0,9
Hydrogen phosphide (PH3), max.	% obj.	0,005
Hydrogen sulphide H2S, max.	% obj.	0,001
Water content (H2O), max.	g/m3	0,1

APPLICATION
Acetylene is used for gas welding and cutting of metals. In a special burner its mixture with oxygen can reach a temperature of 3 200 °C. It can also be used as a raw material in the chemical industry for organic compounds production.

SAFETY PRECAUTION AND HEALTH PROTECTION
Acetylene in a pure state and at 20 °C is a colourless gas with narcotic effects. Inhalation results in dizziness, headaches, vomiting, and even unconsciousness. During handling, safety precautions for highly flammable and explosive compounds are to be adhered to. Pressure cylinders filled with acetylene must be protected against dropping and must not be damaged. Valves of the cylinders must be protected by their covering cap and the surface temperature of the cylinders must not exceed +50 °C. Copper, silver and tin must not be used for production of devices and machines using acetylene.

PACKING, TRANSPORTATION AND STORAGE
Acetylene is supplied and stored in steel pressure cylinders with volumes ranging from 5 to 50 litres, that contain a porous material which is saturated by a solution such as acetone or dimethylformamide. It can be delivered in bundled cylinders containing approx. 100 kg of acetylene.

The presented instructions are to be considered as general and may be modified with regard to local conditions.