Method and reagent kit for determining paper degredation in tran

Details Method and reagent kit for determining paper degredation in tran Method and reagent kit for determining paper degredation in tran

1995-12-20

1997-07-08

Warden, Jill

Chemistry: analytical and immunological testing

Oxygen containing

Carbonyl, ether, aldehyde or ketone containing

436 56, 436 60, 436 93, G01N 3326

Patent

active

056460473

ABSTRACT:
This invention relates to power transformers. More particularly, this invention pertains to a method and apparatus for detecting the degree of degradation of paper insulation in a transformer by determining the concentration of furaldehyde in the transformer oil. A reagent for detecting the presence of furaldehyde in transformer oil comprising: (a) a primary amine selected from the group consisting of aniline, toluidine, anisidine, aminophenol or an amine; (b) a second component having about 3 mL of about 15 to 33 (weight to volume) percent of acetic acid alone, or in combination with citric acid; from about 67 to 85 (volume) percent of a halogenated hydrocarbon selected from the group consisting of dichloromethane, chloroform, carbontetrachloride, dichloroethane, trichloroethane, tetrachloroethane, trichloroethylene, tetrachloroethylene; about 4 (weight to volume) percent of salicylic acid; and about 1 (weight to volume) percent of an anti-oxidant; and (c) a third component having about 1.25 mL of about 25 (weight to volume) percent citric acid in distilled water.

REFERENCES:
patent: 3761532 (1973-09-01), De Gramont et al.
patent: 4486610 (1984-12-01), Lund
patent: 4514503 (1985-04-01), Orelup
patent: 4865991 (1989-09-01), Mathers

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