Potassium hydrogen phthalate, primary standard, ACS, 99.95-100.05%

Name: Potassium hydrogen phthalate, primary standard, ACS, 99.95-100.05%
SKU: 033351.30

CAS: 877-24-7 | C8H5KO4 | 204.222 g/mol

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Catalog number 033351.30

also known as 033351-30

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250 g

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Chemical Identifiers

CAS877-24-7

IUPAC Namepotassium 2-carboxybenzoate

Molecular FormulaC8H5KO4

InChI KeyIWZKICVEHNUQTL-UHFFFAOYSA-M

SMILES[K+].OC(=O)C1=CC=CC=C1C([O-])=O

Specifications

Specification Sheet

Appearance (Color)White

Assay (unspecified)99.95-100.05% C₈H₅KO₄ (dried basis)

Impurity contentNa: ≤0.005%

FormPowder or crystals or crystalline powder

Heavy Metals(as Pb): ≤5ppm

As a primary standard for preparing volumetric alkali solutions and as a buffer in pH determinations. Potassium hydrogen phthalate is used as a primary standard for acid- base titrations as well as for calibrating pH meters. It acts as a buffer in pH determination. It finds application as a useful standard for total organic carbon testing.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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