Method of detecting tautomeric cyclic 1,2-diones

Details Method of detecting tautomeric cyclic 1,2-diones Method of detecting tautomeric cyclic 1,2-diones

1996-06-10

1997-08-26

Snay, Jeffrey

Chemistry: analytical and immunological testing

Oxygen containing

Carbonyl, ether, aldehyde or ketone containing

436163, 436164, G01N 2164

Patent

active

056610378

ABSTRACT:
Disclosed is a method of determining whether a solvent contains a tautomeric cyclic 1,2-dione. It is first determined whether the pH of the solvent is acidic (<5), basic (>9), or neutral (5 to 9). If the pH is neutral, an acid or a base is added to make the pH acidic or basic, respectively. The UV absorbance at a first wavelength between about 230 nm and about 270 nm and at a second wavelength between about 280 and about 320 nm is determined. If the pH is acid, it is changed to basic and, if it is basic, it is changed to acidic. The UV absorbance at the first and second wavelengths is again determined. The presence of a tautomeric cyclic 1,2-dione is indicated if the absorbance at the first wavelength was greater when the solvent was acidic and the absorbance at the second wavelength was greater when the solvent was basic. The concentration of the tautomeric cyclic 1,2-dione can be determined by multiplying the change in absorbance by a constant.

REFERENCES:
patent: 4045487 (1977-08-01), Cleeland, Jr. et al.
patent: 5494827 (1996-02-01), Oh et al.

Affiliated with

Also associated with

Rating

Method of detecting tautomeric cyclic 1,2-diones does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of detecting tautomeric cyclic 1,2-diones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting tautomeric cyclic 1,2-diones will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1987646