Titr Point Analysis

The titration point is a criterion used to determine the equivalence point (turning point) of the titration. The “TS 54 Soap” standard published by the Turkish Standards Institute (TSE) covers the materials in the form of bars, granules, powders, creams and liquids, the basic substance of which is soap. It excludes detergents, medical soaps, textile soaps and non-soap materials such as shaving cream, shampoo and cleaning powder.

The titration equivalence point is the point in a titration where the amount of titrant added is sufficient to completely neutralize the analyte solution. The moles of the standard solution (titrant) are equal to the moles of the solution whose concentration is unknown.

The equivalence point is not the same as the end point of a titration. Endpoint refers to the point at which an indicator changes color. Most of the time, the color change occurs after the equivalence point is reached. It is not correct to use the endpoint to calculate equivalence.

There are several different ways to determine the equivalence point of a titration:

• Color change: Some reactions naturally change color at the equivalence point. This is especially seen in redox titration involving transition metals where the oxidation states have different colors.
• pH indicator: A pH indicator that changes color according to the pH value is used. The indicator dye is added at the beginning of the titration. The color change at the end point is an estimate of the equivalence point.
• Precipitation: If an insoluble precipitate forms as a result of the reaction, it is used to determine the equivalence point. However, precipitate can be difficult to identify when particle size, color, and sedimentation rate make it difficult to see.
• Thermometric titrimetry: In thermometric titrimetry, the equivalence point is determined by measuring the rate of change in temperature produced by a chemical reaction.

Briefly, titration is a technique used to determine the concentration of an unknown solution. A solution of known concentration is used to determine the concentration of an unknown solution. Generally, a solution of known concentration is added to a volume of known analyte (a solution of unknown concentration) until the reaction is complete. Knowing the volume of titrant added serves to determine the concentration of the unknown analyte. Most often, an indicator is used to indicate the end of the reaction. Acid-base titrations are monitored by the pH value change as the titration progresses.

Our organization also provides titr point analysis services within the scope of TS 54 standard, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.