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U.S. Department of Energy
Office of Scientific and Technical Information

Odorant composition for liquefied petroleum gases

Patent ·
OSTI ID:6569646

Pennwalt Corp.'s new odorant for LP-gas remains fairly constant in concentration as the LP-gas cylinder is emptied with use, unlike conventional odorants which vary over a 20 to 50-fold range as evaporation continues. The odorant consists of an azeotropic mixture of ethyl mercaptan and/or dimethyl sulfide and a chemically inert, relatively nonodorous organic material capable of forming a minimum-boiling-point azeotrope with ethyl mercaptan and/or dimethyl sulfide. Examples of the inert material are methyl formate, n-pentane, isopentane, amylene, isoamylene, and chloropropane.

Assignee:
Pennwalt Corp.
Patent Number(s):
US 3826631
OSTI ID:
6569646
Country of Publication:
United States
Language:
English