The disinfecting effect of aldehyde products is due to the reaction with various functional groups of the cell proteins of microorganisms, primarily through direct reaction with terminal amino groups. By combining different aldehydes or aldehydes with quaternary ammonium compounds, the disinfecting effect and range of application is increased.
Determination of the aldehyde concentration in disinfectants.
Suitable for all solutions containing aldehydes.
Aldehyde-containing agents are oxidized by iodine to the corresponding acid:
|
R-CHO + I2 + 2 NaOH |
→ |
R-COOH + 2 NaI + H20 |
The iodine not used for oxidation is re-titrated with sodium thiosulphate.