Potassium phthalate monobasic
SIAL/60357 - certified 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 | certified 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 |
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 certified reference material (CRM) 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: | 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 |