Quick method to distinguish alkylbenzene and naphthenic lubrican

Details Quick method to distinguish alkylbenzene and naphthenic lubrican Quick method to distinguish alkylbenzene and naphthenic lubrican

1993-06-29

1994-02-22

Housel, James C.

Chemistry: analytical and immunological testing

Lubricant, grease, mineral oil, hydrocarbon oil product, or...

436139, 436140, 436141, 422 61, G01N 3100, G01N 3303

Patent

active

052886433

ABSTRACT:
A method for the identification of whether a lubricant in a compressor is an alkylbenzene or a naphthenic oil. This method comprises adding 3,3-bis (p-hydroxyphenyl) phthalide and observing whether there is an absence or presence of turbidity.

REFERENCES:
patent: 4203725 (1980-05-01), Snowden
patent: 4744870 (1988-05-01), Kauffman
patent: 5229295 (1993-07-01), Travis
Merck Index, 11th Edition, Merck & Co., Inc., (1989), p. 1150.

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