The product has no specification for metals content. This is a volumetric solution intended for titration. It is prepared in accordance to the procedure described in the reagents part for the preparation of volumetric solutions of the European Pharmacopoeia (Ph. Eur.), using raw materials and water that comply with the relevant Ph. Eur. requirements and specification. For this type of solution, the key release test is an accurate determination of its concentration (titer) after production with a certified reference material. Additional testing for specific impurities in the finished solution is not required under the applicable compendial approach.
Production and filling procedures are in place to minimize carbon dioxide exposure including the production of the pharmaceutical grade ware we use. The solution is packaged in high-quality HDPE bottles designed to provide a strong barrier against air, CO2 and moisture. These measures support a three-year shelf life for an unopened, original closed bottle when stored as specified.
The titer is determined after production and again after filling, using samples from multiple bottles. The nominal concentration is stated on the Certificate of Analysis and only released when it is in the very narrowly defined specification range.
Once a bottle has been opened and is in use, exposure to air can lead to carbon dioxide uptake and may affect the solution's concentration. For this reason, we recommend periodic titer determination during use, in line with your procedures and the solution's intended application.
To protect the solution during use, attach a drying tube containing soda lime when the bottle is connected to the titrator burette. Alternatively, use a glass stopcock and close it whenever the titrator is not in use.
1.09112
Potassium hydroxide solution
c(KOH) = 0.1 mol/l (0.1 N), reag. Ph. Eur., ready-to-use volumetric solution for titration, Titripur®
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|---|---|---|
1 L | Check Cart for Availability | $44.30 |
1 L | Check Cart for Availability | $46.60 |
About This Item
Product Name
Potassium hydroxide solution, c(KOH) = 0.1 mol/l (0.1 N), Titripur®, reag. Ph. Eur.
agency
reag. Ph. Eur.
Quality Segment
product line
Titripur®
form
liquid
quality
Analyzed in our ISO 17025 accredited QC lab
reaction suitability
reaction type: Acid-base reactions
concentration
0.1 M
technique(s)
titration: suitable
pH
13 (20 °C in H2O)
bp
100 °C
density
1.00 g/cm3 at 20 °C
storage temp.
15-25°C
SMILES string
[K+].[O-][H]
InChI
1S/K.H2O/h;1H2/q+1;/p-1
InChI key
KWYUFKZDYYNOTN-UHFFFAOYSA-M
Application
- Chemical and morphological analysis of explanted polyurethane vascular prostheses: the challenge of removing fixed adhering tissue.: This study details the use of potassium hydroxide solution for chemical analysis in the examination of explanted polyurethane vascular prostheses, focusing on challenges related to removing tissue that remains adhered to the biomaterials (Zhang et al., 1996). (Zhang et al., 1996).
Features and Benefits
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SmartChemicals for Digital Data Transfer to Mettler Toledo Titration Instruments
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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
Analysis Note
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 84 potassium hydrogen phthalate) by means of volumetric standard potassium hydrogen phthalate (article number 1.02400), 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
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Signal Word
Warning
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
Hazard Codes
Storage Class
12 - Non Combustible Liquids
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Could you please provide the impurity specifications (including Fe, Ni, Cu, and Pb) and carbonate (CO₃²⁻)? What measures are taken during production and packaging to prevent contamination by CO₂ from ambient air and metals?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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