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Potassium hydrogen phthalate, primary standard, ACS, 99.95-100.05%
CAS: 877-24-7 | C8H5KO4 | 204.222 g/mol
$128.15 - $296.58
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+] |
Description
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
| 877-24-7 | |
| 204.222 | |
| IWZKICVEHNUQTL-UHFFFAOYSA-M | |
| 23676735 | |
| C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+] |
| C8H5KO4 | |
| MFCD00013070 | |
| 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 | |
| potassium;2-carboxybenzoate |
Specifications
| 297°C (decomposition) | |
| White | |
| 250 g | |
| C8H5KO4 | |
| 3637128 | |
| Soluble in water. Slightly soluble in alcohol. | |
| C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+] | |
| 204.222 | |
| 204.23 | |
| 1.636 g/mL |
| 877-24-7 | |
| Crystalline Powder | |
| 99.95-100.05% | |
| MFCD00013070 | |
| 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 | |
| IWZKICVEHNUQTL-UHFFFAOYSA-M | |
| potassium;2-carboxybenzoate | |
| 23676735 | |
| ACS Reagent | |
| Potassium hydrogen phthalate, primary standard, For ACS analysis |
Safety and Handling
EINECSNumber : 212-889-4
RTECSNumber : CZ4326000
TSCA : Yes
Recommended Storage : Ambient temperatures
RUO – Research Use Only