NIST84L

Hydrogénophtalate de potassium

NIST^® SRM^® 84l

• Synonyme(s) : Phtalate de potassium monobasique, Acide phtalique monopotassium salt, Biphthalate de potassium, Hydrogénophthalate de potassium, KHP
• Formule linéaire : HOOCC₆H₄COOK
• Numéro CAS: 877-24-7
• Poids moléculaire : 204.22
• Beilstein: 3637128
• Numéro MDL: MFCD00013070
• Code UNSPSC : 41116107
• ID de substance PubChem : 329818774
• Nomenclature NACRES : NA.24

Propriétés

• Qualité: certified reference material
• Niveau de qualité: 100
• Agence: suitable for SM 2310; suitable for SM 2320
• Conditionnement: pkg of 60 g
• Fabricant/nom de marque: NIST^®
• Technique(s): titration: suitable
• Pf: 295-300 °C (dec.) (lit.)
• Format: matrix material
• Chaîne 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
• Clé InChI: IWZKICVEHNUQTL-UHFFFAOYSA-M

Description

Description générale

It consists of highly purified potassium hydrogen phthalate (KHP), KHC₈H₄O₄. Its certified value is calculated as the mass fraction of total acid (replaceable H⁺) expressed as KHP. Its certified value is based on the results of coulometric assays of ground and dried material. The assay value for this material was obtained by automated coulometric titration to the inflection point (pH ≈ 8.4) of weighed test portions of KHP. The certified value represents the result of 30 titrations of test portions taken from 16 bottles selected by stratified random sampling.

The certification of SRM 84L is valid, within the measurement uncertainties specified, provided the RM is handled and stored in accordance with the instructions given in the “Instructions for Storage and Use”.

SRM 84L_CERT

SRM 84L_SDS

Application

This Standard Reference Material (SRM) is intended for use as an acidimetric primary standard. This SRM is certified for acidimetric assay ONLY and is not intendedfor use as a pH standard.

Caractéristiques et avantages

• A unit of SRM 84L is supplied as crystalline material in a 60 g unit
• Information on product description, disposal, and transportation is available in the accompanying MSDS
• The enclosed CoA contains information on the SRM’s expiry date and instructions for its handling, storage, and use

Autres remarques

Certified for the analytes listed below.
Potassium Hydrogen Phthalate

See certificate for values and more details at nist.gov/SRM.

Informations légales

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

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

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): 387.1 °F - Pensky-Martens closed cup
• Point d'éclair (°C): 197.3 °C - Pensky-Martens closed cup