a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless flammable gas used chiefly in welding and in organic synthesis

a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds

a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds