NIST185I

Potassium phthalate monobasic

NIST^® SRM^® 185i, pH standard

• Sinónimos: Potassium phthalate monobasic, KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate
• Fórmula lineal: HOOCC₆H₄COOK
• Número de CAS: 877-24-7
• Peso molecular: 204.22
• Beilstein: 3637128
• Número MDL: MFCD00013070
• Código UNSPSC: 41116107
• ID de la sustancia en PubChem: 329818718
• NACRES: NA.24

Propiedades

• grado: certified reference material
• Nivel de calidad: 100
• Agency: suitable for SM 2310; suitable for SM 2320
• formulario: crystals
• envase: pkg of 60 g
• fabricante / nombre comercial: NIST^®
• mp: 295-300 °C (dec.) (lit.)
• cadena SMILES: [K+].OC(=O)c1ccccc1C([O-])=O
• InChI: 1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
• Clave InChI: IWZKICVEHNUQTL-UHFFFAOYSA-M

Descripción

Descripción general

SRM 185I is certified as a p^H standard [p^H(S)].   

Each unit of SRM 185I consists of 60 g of potassium hydrogen phthalate.

SRM 185I _SDS

SRM 185I _CoA

Aplicación

Potassium hydrogen phthalate standard reference material (SRM) is intended for use in preparing solutions for calibrating electrodes for p^H measuring systems.

Características y beneficios

• SRM 185I is available with certified p^H(S) values and their expanded uncertainties. 
• Certified values are derived from potential measurements of cells without liquid junction by the primary measurement method. 
• Certified values are metrologically traceable to the International System of Units (SI) of amount-of-substance and mass and to the definition of single ion activity. 
• The NIST certificate is provided with maintenance, storage, handling, and use instructions.

Otras notas

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Información legal

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Información de seguridad

• Código de clase de almacenamiento: 13 - Non Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): 387.1 °F - Pensky-Martens closed cup
• Punto de inflamabilidad (°C): 197.3 °C - Pensky-Martens closed cup