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Karl Fischer ROTI®Hydroquant T2

2 mg H2O/ml, pyridine-free
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: Flammable; liquids form compounds with the air which can become explosive; produce flammable gases with water or can self-combust. Safety: Keep away from open flames and sources of heat; close containers tightly; store in a fire-safe manner.
Examples of effect: In smaller quantities, lead to immediate serious damage to health or death. Safety: Do not inhale, touch or swallow. Wear work safety equipment. Call a poison control centre or doctor immediately. Recovery position.
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.
i highly flammable liquid and vapour, toxic if swallowed, in contact with skin or if inhaled, causes damage to organs (eye), may cause damage to organs (thyroid gland) through prolonged or repeated exposure (if swallowed)
P210 P280 P302+P352 P304+P340 P308+P311
i keep away from heat, sparks, open flames, hot surfaces. No smoking, wear protective gloves/protective clothing/eye protection/face protection, IF ON SKIN: Wash with plenty of soap and water, IF INHALED: Remove person to fresh air and keep comfortable for breathing, IF exposed or concerned: Call a POISON CENTER/doctor
Related products
Pack Qty.
Volumetric Karl Fischer solutions, Reagents for water analysis, Water determination acc. to Karl Fischer
Density (D) 0,8 g/cm³
Boiling point (bp) 65 °C
Flash point (flp) 11 °C
UN-Nr. 1992

Titrant component. Two-components reagent. For use with item number T192, 5218 or 20TK.

€74.75/Pack Qty. 

excl. VAT. | 1 l per Pack Qty.

Art. No. X947.1

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Karl Fischer ROTI®Hydroquant T2
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X947.1 1 l glass


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Downloads / MSDS

General information

Karl Fischer Reagents ROTI®Hydroquant

There are two established Karl Fischer methods of calculating the water content of a substance: Volumetric analysis and coulometric analysis.

Which method is chosen depends primarily on the water content that the sample is expected to have. Making the right choice is vital for obtaining reliable and reproducible results. Carl ROTH offers compatible reagents for both of these methods.

Volumetric Reagents

Karl Fischer volumetric analysis is recommended if the water content of a sample ought to be between 0,1 % and 100 %. Volumetric analysis is performed by measuring the amount of Karl Fischer reagent that needs to be added to a substance until the end point of the titration has been reached. In alcoholic solutions, water reacts 1:1 with iodine in the presence of sulphur dioxide. Methanol and sulphur dioxide form an acid ester that is neutralised by the base (e.g. imidazole, hereafter referred to as "RN" for simplicity).

CH3OH + SO2 + RN → [RNH]SO3CH3

In the titration process, iodine is added which reacts with water to be reduced to colourless iodide:

[RNH]SO3CH3 + H2O + I2 + 2 RN → [RNH]SO4CH3 + 2 [RNH]I

This reaction continues until there is no water left. The end point is determined by a change in colour due to a surplus of iodine and measured using a potentiometer.

Table illustrating the uses of Karl Fischer ROTI®Hydroquant volumetric reagents:

Solvent components
Methanol (T193) Methanol (1PPH) Working medium K (5215) CS E (22L5) CS KE (22L6) Fat Solver MH (20TL) Fat Solver CM (22L7) Fat Solver crude oil (22LC) S (T192) S CM (5218) S Oil (20TK) S E (22LA)
Titration components C1 (22L4) X X



C2 (T194) X X



C5 (T190) X X



C5 plus (1T13) X X



C5 K (5211)



T2 (X947)


T5 (T191)


T2 E (22L8)

T5 E (22L9)


Two-components Reagents

In two-component systems, the substances crucial for the reaction are separated, with some in the solvent component and some in the titration component. Separating the substances gives the system a longer shelf life and means that the titre needs to be determined less frequently.

Certificates of Analysis

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Type analysis

Efficiency≥2 mg H2O/ml
At the time of manufacture.