Assay

Details Assay Assay

1990-10-30

1992-09-08

Lacey, David L.

Chemistry: analytical and immunological testing

Nitrogen containing

436131, 436132, 436164, 436175, G01N 2175

Patent

active

051457881

ABSTRACT:
A method for assaying Bronopol or Permachem, i.e. 2-bromo-2-nitro-1,3-propanediol or 2,2-dibromo-2-nitroethanol, or a derivative thereof in a sample, comprises adding to the sample a diazo compound which reacts with the compound under test to form a colored species, and determining the presence and, if desired, concentration of the species colorimetrically.

REFERENCES:
N. De Kruijf et al., "Thin-Layer Chromatographic Procedure for the Identification of Preservatives in Cosmetic Products", Journal of Chromatography, 410 (1987), 395-411.

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