1.06277

Sodium arsenite solution

c(NaAsO₂) = 0.05 mol/l (0,1 N), reag. USP, ready-to-use volumetric solution for titration, Titriplex^®

• Code UNSPSC : 12352302
• Nomenclature NACRES : NA.21

Propriétés

• product name: Sodium arsenite solution, c(NaAsO₂) = 0.05 mol/l (0,1 N), Titripur^®, reag. USP
• Agence: reag. USP
• Niveau de qualité: 200
• Gamme de produits: Titripur^®
• Forme: liquid
• Qualité: Analyzed in our ISO 17025 accredited QC lab
• Capacité de réaction: reaction type: Redox Reactions
• Concentration: 0.05 M
• Technique(s): titration: suitable
• pH: 9.3 (20 °C in H₂O)
• Densité: 1.005 g/m³ at 20 °C
• Température de stockage: 15-25°C

Description

Caractéristiques et avantages

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.

Conditionnement

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

Remarque sur l'analyse

Form liquid
Amount-of-substance concentration 0.04975 - 0.05025 mol/L
Measurement uncertainty ± 0.00015 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 723 Tris(hydroxymethyl)aminomethane) by means of volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408), 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.

Informations légales

Titripur is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS08
• Mention d'avertissement: Danger
• Mentions de danger: H350 - H412
• Conseils de prudence: P202 - P273 - P280 - P308 + P313 - P405 - P501
• Classification des risques: Aquatic Chronic 3 - Carc. 1A
• Code de la classe de stockage: 6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable