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

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

Catalog No. AA3335130
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AA3335130 250 g
AA33351A1 1 kg
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Catalog No. AA3335130 Supplier Thermo Scientific Chemicals Supplier No. 03335130
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Description

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

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.

Chemical Identifiers

CAS 877-24-7
Molecular Formula C8H5KO4
Molecular Weight (g/mol) 204.222
MDL Number MFCD00013070
InChI Key IWZKICVEHNUQTL-UHFFFAOYSA-M
Synonym potassium hydrogen phthalate, potassium biphthalate, monopotassium phthalate, potassium acid phthalate, hydrogen potassium phthalate, phthalic acid monopotassium salt, 1,2-benzenedicarboxylic acid, monopotassium salt, phthalic acid, monopotassium salt, phthalic acid potassium salt, potassium phthalate monobasic
PubChem CID 23676735
IUPAC Name potassium;2-carboxybenzoate
SMILES C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]

Specifications

Melting Point 297°C (decomposition)
Color White
Physical Form Crystalline Powder
Quantity 250 g
Assay Percent Range 99.95-100.05%
Beilstein 3637128
Solubility Information Soluble in water. Slightly soluble in alcohol.
Formula Weight 204.23
Grade ACS Reagent
Density 1.636 g/mL
Chemical Name or Material Potassium hydrogen phthalate, primary standard, For ACS analysis
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Safety and Handling

EINECSNumber 212-889-4
RTECSNumber CZ4326000
TSCA Yes
Recommended Storage Ambient temperatures

RUO – Research Use Only