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1.05595 Supelco

Sodium hydroxide solution

c(NaOH) = 0.33 mol/l (1/3 N) Titripur®



Related Categories Analytical Reagents, Analytical/Chromatography, Titration, Volumetric Titration Reagents
Agency/Method   ISO 17025
Quality Level   100
vapor pressure   3 mmHg ( 37 °C)
form   liquid
reaction suitability   reaction type: Acid-base reactions
concentration   0.33 M
application(s)   titration: suitable
pH   13.5 (20 °C in H2O)
density   1.01 g/cm3 at 20 °C
SMILES string   [OH-].[Na+]
InChI   1S/Na.H2O/h;1H2/q+1;/p-1
storage conditions   no restrictions.


Features and Benefits

This volumetric solution is certified according to DIN EN ISO/IEC 17025. The accreditation certificate can be found at www.sigmalaldrich.com/ISO17025


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

Analysis Note

Amount-of-substance concentration: 0.3333 mol/l
The concentration of this volumetric solution was determined with hydrochloric acid standard solution (article number 1.09057) standardized against volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408). The determined titer at 20°C was 1.000 with an expanded measurement uncertainty of ± 0.003 (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 723e (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard Tris(hydroxmethyl)aminomethane, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

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