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Chloride Test

titrimetric, for use with MCOLORTEST®

specific analyte(s)


Quality Level


for use with MCOLORTEST®

detection method


storage temp.


General description

Chloride is found in the earth´s crust and can therefore also be found in all natural waters at some concentration. This MQuant® Chloride test (formally MColortest®) is suitable for the titrimetric determination using a convenient dropping bottle.

In nitric solution chloride ions are titrated with mercury(II) nitrate solution against 1,5-diphenylcarbazone as the indicator, forming slightly dissociated mercury(II) chloride in the process. At the titration end-point, excess mercury(II) ions react with the indicator to form a blue-violet complex. The chloride concentration is determined from the consumption of titration solution (mercurimetric determination).

The test can be used in
  • Groundwater, surface water, and seawater (after dilution)
  • Waters from aquaculture
  • Drinking water and mineral water
  • Water for concrete in the construction industry
  • Industrial water and wastewater
  • Boiler and boiler feed water, cooling water
  • Swimming-pool water
  • Food after appropriate sample pretreatment
  • Soils and fertilizers after appropriate sample pretreatment

This test is suitable to detect chloride interferences which are a mayjor reason for wron COD readings. Therefore it can serve as pretest for COD measurements with e.g. our Spectroquant® COD cell tests for seawater/samples with high chloride content 1.17058 and 1.17059.
Method: titrimetric with dropping bottle MQuant®


100 tests in Plastic box

Legal Information

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
SPECTROQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word


Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Repr. 1B - Skin Corr. 1B - STOT RE 2

Target Organs


Supplementary Hazards

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



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Certificate of Quality

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