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Potassium dichromate solution

1/24 mol/l – 0,25 N, volumetric standard solution, for COD determination
Icon_EVE-EUD Please consider that this product might be liable to some legal sanctions as for example to obtain an end user declaration or the prohibition of some applications. For details please do contact your counterpart in our sales department!
Examples of effect: Have an allergenic effect, carcinogenic, mutagenic, toxic to reproduction and cause developmental toxicity (reprotoxic) or damage to organs Safety: You must be well-informed before starting work with these substances; wear protective clothing and gloves, eye protection and mask or breathing protection.
Danger
H340-H350-H360FD-H373-H412-EUH208
i may cause genetic defects, may cause cancer, may damage fertility. May damage the unborn child, may cause damage to organs through prolonged or repeated exposure, harmful to aquatic life with long lasting effects
P273 P280 P304+P340 P308+P313
i avoid release to the environment, wear protective gloves/eye protection, IF INHALED: Remove person to fresh air and keep comfortable for breathing, IF exposed or concerned: Get medical advice/attention
Pack Qty.
Pack.
Density (D) 1,008 g/cm³
Boiling point (bp) 100 °C
WGK 1


Type analysis
€32.15 /Pack Qty.

€25.65/Pack Qty.  Campaign price!

excl. VAT. | 1 l per Pack Qty.

Art. No. P721.1

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General information

Determination of chemical oxygen demand (COD)

COD (chemical oxygen demand) is a measure of all the oxidisable components in water under specific conditions. The water sample is mixed with sulphuric acid and heated together with a defined quantity of potassium dichromate, with silver sulphate added as the catalyst. Chloride must be removed beforehand or masked with mercury sulphate. The remaining potassium dichromate is measured by means of titration, using an ammonium iron(II) sulphate solution and ferroin as the indicator. The equivalent amount of oxygen can then be calculated from the amount of potassium dichromate that is used up.

Volumetric Standard Solutions

A volumetric standard solution is a solution containing a precisely known concentration of a substance. The concentration of a volumetric standard solution is determined using a primary standard, which is accurately weighed and dissolved to make a specific volume. Volumetric standard solutions are made using reagent-grade (p.a.) substances as source materials.

Volumetric Standard Solutions, ready-to-use

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Analysis certificates

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The following analysis certificates have been found:

Type analysis

Amount-of-substance conc. (20 °C)1/24 mol/l ±0,2 %  
Titer0,998-1002

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