1.11787

Potassium hydroxide solutionin methanol

c(KOH) = 2.0 mol/l (2 N), Titripur^®

• Código UNSPSC: 12352305

Propriedades

• Nível de qualidade: 200
• linha de produto: Titripur^®
• forma: liquid
• temperatura de autoignição: 455 °C (Methanol)
• qualidade: Analyzed in our ISO 17025 accredited QC lab
• Lim. expl.: 5.5-44 % (v/v) Methanol)
• adequação da reação: reaction type: Acid-base reactions
• concentração: 0.1 M
• técnica(s): titration: suitable
• pH: 14 (20 °C in H₂O)
• temperatura de transição: flash point 7 °C
• densidade: 0.93 g/cm³ at 20 °C
• temperatura de armazenamento: 15-25°C

Descrição

Características e benefícios

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.

Nota de análise

Form liquid
Amount-of-substance concentration 1.990 - 2.010 mol/L
Measurement uncertainty ± 0.006 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.

Informações legais

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

Informações de segurança

• Pictogramas: GHS02,GHS05,GHS06,GHS08
• Palavra indicadora: Danger
• Frases de perigo: H225 - H290 - H301 + H311 + H331 - H314 - H370
• Declarações de precaução: P210 - P233 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classificações de perigo: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 2 - Met. Corr. 1 - Skin Corr. 1A - STOT SE 1
• Código de classe de armazenamento: 3 - Flammable liquids
• Classe de risco de água (WGK): WGK 2
• Ponto de fulgor (°F): 44.6 °F
• Ponto de fulgor (°C): 7 °C