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  6. Potassium Hydrogen Phthalate (Primary Standard/Meets ACS Specifications), Fisher Chemical™

Potassium Hydrogen Phthalate (Primary Standard/Meets ACS Specifications), Fisher Chemical™

Catalog No. P243500 Shop All Fisherbrand Products
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100 g
500 g
Packaging:
Glass Bottle
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P243-500 500 g Glass Bottle
P243-100 100 g Glass Bottle
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Description

Note: This reagent is satisfactory for use as a pH standard. For use as an acidimetric standard, this material should be lightly crushed and dried for 2 hours at 120°C to remove any absorbed moisture

TRUSTED_SUSTAINABILITY

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 295°C
Color White
pH 3.8 to 4.0
Assay Percent Range ≥98.5 %
Packaging Glass Bottle
Linear Formula 1-(HO2C)-2-(CO2K)-C6H4
Quantity 500 g
Solubility Information 0.005% max. Insoluble Matter
Formula Weight 204.23
Percent Purity 99.95 to 100.05%
Grade Also meets ACS specifications
Physical Form Solid
Chemical Name or Material Potassium Hydrogen Phthalate
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