1.09142

Sodium hydroxide solution

c(NaOH) = 0.02 mol/l (0.02 N), reag. USP, ready-to-use volumetric solution for titration, Titriplex^®

• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• MDL number: MFCD00003548
• UNSPSC Code: 12352305
• NACRES: NA.21

Properties

• product name: Sodium hydroxide solution, c(NaOH) = 0.02 mol/l (0.02 N), Titripur^®, reag. USP
• agency: reag. USP
• Quality Level: 200
• vapor pressure: 3 mmHg ( 37 °C)
• product line: Titripur^®
• form: liquid
• quality: Analyzed in our ISO 17025 accredited QC lab
• reaction suitability: reaction type: Acid-base reactions
• concentration: 0.02 M
• technique(s): titration: suitable
• pH: 12.5 (20 °C in H₂O)
• density: 1.00 g/cm³ at 20 °C
• storage temp.: 15-25°C
• SMILES string: [OH-].[Na+]
• InChI: 1S/Na.H2O/h;1H2/q+1;/p-1
• InChI key: HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

Application

• Ozone-activated Lignocellulose Films: Discusses the preparation of ozone-activated lignocellulose films blended with chitosan using sodium hydroxide solution, aimed at producing biodegradable and edible films for food packaging, emphasizing sustainability and environmental safety (Ebrahimi SS, Hamzeh Y, et al., 2024).


• Cellulose Dissolution in ZnO/NaOH/Water: Details the study of cellulose dissolution in a ZnO/NaOH/water solvent solution using molecular dynamics simulation, demonstrating the temperature-dependent effects which are crucial for developing new materials in textile and pharmaceutical industries (Bourassi L, El Mrani M, et al., 2024).


• Recycling of Geopolymer Concrete: Utilizes sodium hydroxide solution in the recycling of metakaolin/slag-based geopolymer concrete under various strength levels and freeze-thaw conditions, contributing to sustainable construction practices (Liu M, Liu H, et al., 2024).


• Sensitivity-Enhanced Detection of NH3: Reports on the development of sensitivity-enhanced, room-temperature NH3 detection using alkalized Ti3C2Tx MXene, where sodium hydroxide solution plays a critical role in modifying the electroconductive properties for sensor applications (Tan Y, Xu J, et al., 2024).

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

Analysis Note

Form liquid
Amount-of-substance concentration 0.01990 - 0.02010 mol/L
Measurement uncertainty ± 0.00006 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 determined with standardized hydrochloric acid solution (article number 1.09060). The hydrochloric acid solution is standardized and 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.

Legal Information

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

Safety Information

• Storage Class: 12 - Non Combustible Liquids
• wgk_germany: nwg