Reagent for colorimetrically indicating the presence of formalde

Details Reagent for colorimetrically indicating the presence of formalde Reagent for colorimetrically indicating the presence of formalde

1986-05-19

1987-05-19

Lacey, David L.

Chemistry: analytical and immunological testing

Oxygen containing

Carbonyl, ether, aldehyde or ketone containing

436902, 422 57, 422 86, G01N 2178, G01N 3122

Patent

active

046668594

ABSTRACT:
A novel colorimetric reagent for the selective determination of formaldehyde in solution or in air is described. The reagent comprises at least two chemicals: rubeanic acid or a rubeanic acid derivative, and a cyano complex of a metal. Upon addition of formaldehyde, a color is formed which is quantitatively related to the number of formaldehyde molecules reacted. The chromophoric reagent can be mixed with other inactive ingredients such as stabilizers, buffers, polymers, etc. and used in solutions as a coating on a flat surface, or on beads to detect and determine formaldehyde colorimetrically. One particular application of the colorimetric reagent is in a direct reading colorimetric gas dosimeter for formaldehyde.

REFERENCES:
patent: 3892709 (1975-07-01), Oda et al.
patent: 3945798 (1976-03-01), Young
patent: 4323698 (1982-04-01), Haag et al.
patent: 4511658 (1985-04-01), Lambert et al.
patent: 4552849 (1985-11-01), Nakajama
Merch Index 10th ed. Merck & Co. Rathway, N.J. 1983, p. 1193.

Affiliated with

Also associated with

Rating

Reagent for colorimetrically indicating the presence of formalde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reagent for colorimetrically indicating the presence of formalde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reagent for colorimetrically indicating the presence of formalde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1564788