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Karl Fischer ROTI®Hydroquant water standard 10.0, 10 x 8 ml ampoules

10 mg H2O/g
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: Damage metals and burn body tissues; may cause serious eye damage. Safety: Avoid contact; wear safety spectacles and gloves. In the event of contact with eyes and skin, rinse with water.
Examples of effect: Lead to damage to heath, cause irritation to eyes, skin or respiratory organs. Are fatal in larger quantities. Safety: As previously stated, in the event of skin irritation or contact with eyes, rinse with water or a suitable medium.
Danger
H226-H315-H318-H335-H336
i flammable liquid and vapour, causes skin irritation, causes serious eye damage, may cause respiratory irritation, may cause drowsiness or dizziness
P210 P280 P303+P361+P353 P304+P340 P305+P351+P338 P312
i keep away from heat, sparks, open flames, hot surfaces. No smoking, wear protective gloves/protective clothing/eye protection/face protection, IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower], IF INHALED: Remove person to fresh air and keep comfortable for breathing, IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing, call a POISON CENTRE/doctor if you feel unwell
Related products
Pack Qty.
Pack.
Packaging
Water determination acc. to Karl Fischer
Flash point (flp) 24 °C
ADR 3 III
WGK 2
UN-Nr. 1993

Water standard for KF volumetry

Guarantee analysis
€78.40 /Pack Qty.

€62.65/Pack Qty.  Campaign price!

excl. VAT. | 10 unit(s) per Pack Qty.

Art. No. 5219.2

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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.


Standards
Water standards with a defined water content are required to determine the titre for the reagents used (C or T components). Either a solid or a liquid standard can be chosen.


Analysis certificates

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:

Guarantee analysis

Water content10,0 ±0,1 mg H2O/g  

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