1.01963

Potassium hydrogen tartrate

certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 3.63₉ / pH(S) = 3.55₇ (25°C) Certipur^®

• Sinónimos: Potassium hydrogen tartrate, KHT, Monopotassium tartrate, Potassium Bitartrate, Potassium acid tartrate
• Fórmula empírica (notación de Hill): C₄H₅KO₆
• Número de CAS: 868-14-4
• Peso molecular: 188.18
• Número MDL: MFCD00065392
• Código UNSPSC: 41116107
• Número índice de la CE: 212-769-1
• NACRES: NA.24

Propiedades

• grado: certified reference material
• Nivel de calidad: 300
• Agency: complies with DIN 19266
• Línea del producto: Certipur^®
• pH: 3.4-3.7 (20 °C in H₂O, saturated solution)
• mp: 250 °C (decomposition)
• solubilidad: 5.7 g/L
• densidad aparente: 720 kg/m³
• aplicaciones: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• formato: neat
• temp. de almacenamiento: 15-25°C
• InChI: 1S/C4H6O6.K/c5-1(3(7)8)2(6)4(9)10;/h1-2,5-6H,(H,7,8)(H,9,10);/q;+1/p-1/t1-,2-;/m1./s1
• Clave InChI: KYKNRZGSIGMXFH-ZVGUSBNCSA-M

Descripción

Descripción general

Certipur^® certified secondary standard reference buffers are used to precisely calibrate and monitor pH measurement instruments and buffer solutions. They are quality controlled and qualified in our ISO/IEC 17025 and 17034 accredited calibration laboratories against certified primary standard reference materials (SRM) in compliance with DIN 19266, IUPAC, NIST and Ph. Eur. Certipur^® reference materials offer maximum accuracy, reliability and convenience and help avoid costly repeat analyses.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Aplicación

Potassium hydrogen tartrate [pH(S) = 3.63₉ / pH(S) = 3.55₇ (25 °C)] is a certified secondary standard reference buffer used as a calibration buffer standard for pH instruments or pH electrodes.

Características y beneficios

• The product is delivered with a comprehensive, batch-specific Certificate of Analysis showing relevant data for the quality management system.
• The pH value of this Certipur^® buffer solution is measured using differential potentiometry with two platinum hydrogen electrodes against NIST & PTB primary SRMs [pH(S) = 3.63₉ / pH(S) = 3.55₇ (25 °C)].
• It is a Certified Reference Material (CRM) offered in neat format.
• Intended for extremely precise calibration, qualification and monitoring of pH instruments and for testing other buffer solutions.

Nota de análisis

pH-value (25 °C): 3.634 - 3.640
Identity: passes test

Información legal

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

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): 410.0 °F
• Punto de inflamabilidad (°C): 210 °C