Potassium phthalate monobasic
SIAL/60357 - reference material for titrimetry, certified by BAM, >99.5%
Synonym: KHP; Phthalic acid monopotassium salt; Potassium biphthalate; Potassium hydrogen phthalate
CAS Number: 877-24-7
Empirical Formula (Hill Notation): C8H5KO4
Molecular Weight: 204.22
EC Number: 212-889-4
MDL Number: MFCD00013070
Linear Formula: HOOCC6H4COOK
Product Type: Chemical
| application(s) | environmental |
| assay | >99.5% |
| format | neat |
| grade | reference material |
| InChI | 1S/C8H6O4.K/c9-7(10)5-3-1 |
| InChI key | IWZKICVEHNUQTL-UHFFFAOYSA |
| mp | 295-300 °C (dec.) (lit.) |
| pH | 4 |
| quality | certified by BAM |
| Quality Level | 100  |
| SMILES string | [K+].OC(=O)c1ccccc1C([O-] |
| technique(s) | titration: suitable |
| Analysis Note: | Exact concentration, expiry date and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label. |
| Application: | It finds its use as a reference material for the standardization of volumetric solutions in alkalimetric titrations. |
| Features and Benefits: | • Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened. • High-purity material traceable to NIST SRM • High-quality offering accurate titer determinations • Accompanied by a certificate of analysis (CoA) |
| General description: | Download your certificate at http://www.sigma-aldrich. to view certified values, including uncertainty and expiry date. |
| General description: | Potassium hydrogen phthalate, also known as KHP, is a volumetric standard produced under stringent conditions and measured with the highest possible precision. The content of the standard is measured using volumetric acid-base titrations. Its certified value and uncertainty measurement are in accordance with ISO Guide 35. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | 387.1 °F - Pensky-Martens c |
| Flash Point(C) | 197.3 °C - Pensky-Martens c |
| Purity | >99.5% |
| mp | 295-300 °C (dec.) (lit.) |
| UNSPSC | 41116107 |