Merck
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Safety Information

1.11586

Supelco

Potassium hydroxide solution

c(KOH) = 0.5 mol/l (0.5 N), Titripur®, reag. USP

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Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
MDL number:

Agency

reag. USP

Quality Level

product line

Titripur®

form

liquid

quality

Analyzed in our ISO 17025 accredited QC lab

reaction suitability

reaction type: Acid-base reactions

concentration

0.5 M

technique(s)

titration: suitable

pH

>13.5 (20 °C in H2O)

density

1.02 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

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This Item
24-47101.099181.09919
reaction suitability

reaction type: Acid-base reactions

reaction suitability

-

reaction suitability

reaction type: Acid-base reactions

reaction suitability

reaction type: Acid-base reactions

technique(s)

titration: suitable

technique(s)

-

technique(s)

titration: suitable

technique(s)

titration: suitable

agency

reag. USP

agency

-

agency

-

agency

-

form

liquid

form

liquid

form

liquid

form

liquid

quality

Analyzed in our ISO 17025 accredited QC lab

quality

-

quality

-

quality

-

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.

Analysis Note

Form liquid
Amount-of-substance concentration 0.4975 - 0.5025 mol/L
Measurement uncertainty ± 0.0015 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

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

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names


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