Sigma-Aldrich Sodium Thiosulfate Solutio

Agency

reag. pH. Eur.
reag. USP

Quality Level

200

Product Line

Titripur^®

Form

liquid

Quality

Analyzed in our ISO 17025 accredited QC lab

Reaction Suitability

reaction type: Redox Reactions

Packaging

Titripac^®of

Concentration

0.1 M

Technique(S)

titration: suitable

pH

9-10 (20 °C in H₂O)

Related Categories

Titration Reagents

Application

• The para-chloroaniline prevention after the use of sodium thiosulfate as an intermediary irrigator between sodium hypochlorite and chlorhexidine.: This study evaluates the neutralization of sodium hypochlorite by sodium thiosulfate to prevent para-chloroaniline formation when combined with chlorhexidine. It provides insights into the optimal concentrations of sodium thiosulfate for safe and effective usage in analytical applications involving these chemicals (Endocrinology and Disorders, 2020).

Features And Benefits

Accreditation:
This volumetric solution is analyzed by our calibration laboratory D-K-15185-01-00 which is accredited according to DIN EN ISO/IEC 17025 for analysis of amount-of-substance concentrations in volumetric solutions by DAkkS (Deutsche Akkreditierungsstelle - German National Accreditation Body). The accreditation certificate can be found at www.sigmaaldrich.com/ISO17025.

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Titripac^®packaging - all SKU-pack size numbers ending "4000, 4003, 9010, 9013" - more information on www.sigmaaldrich.com/Titripac

Linkage

Replaces: SX0821; SX0821-3; SX0821-8

Analysis Note

Form liquid
Amount-of-substance concentration 0.0995 - 0.1005 mol/L
Measurement uncertainty ± 0.0003 mol/L
Traceability NIST SRM

The concentration is determined by volumetric titration and refers to 20°C.
The amount-of-substance concentration of this volumetric solution is traceable to a primary standard reference material (SRM) from the National Institute of Standards and Technology, Gaithersburg, USA (NIST SRM 136 potassium dichromate) by means of volumetric standard potassium iodate (article number 1.02404), certified reference material according to ISO 17034, analyzed by our accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO/IEC 17025. The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%.

Note: The titer is a correction factor to correct for variations of the volumetric solution, the titration equipment, the temperature and other laboratory conditions. For correct titration results it is recommended to determine a titer with the laboratory specific equipment and under laboratory specific conditions directly after opening a new bottle and at regular time intervals.Titripac is a registered trademark of Merck KGaA, Darmstadt, GermanyTitripur is a registered trademark of Merck KGaA, Darmstadt, Germany