Potassium hydrogen phthalate
SIAL/NIST185I - NIST® SRM® 185i, pH standard
Synonym: Potassium phthalate monobasic; KHP; Phthalic acid monopotassium salt; Potassium biphthalate; Potassium hydrogen phthalate
CAS Number: 877-24-7
Empirical Formula (Hill Notation): C8H5KO4
Molecular Weight: 204.22
MDL Number: MFCD00013070
Linear Formula: HOOCC6H4COOK
Product Type: Chemical
application(s) | pharmaceutical (small molecule) |
form | crystals |
grade | certified reference material |
InChI | 1S/C8H6O4.K/c9-7(10)5-3-1 |
InChI key | IWZKICVEHNUQTL-UHFFFAOYSA |
manufacturer/tradename | NIST® |
mp | 295-300 °C (dec.) (lit.) |
packaging | pkg of 60 g |
Quality Level | 100 ![]() |
SMILES string | [K+].OC(=O)c1ccccc1C([O-] |
General description: | SRM 185I_cert ![]() ![]() ![]() ![]() |
Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
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 |
mp | 295-300 °C (dec.) (lit.) |
UNSPSC | 41116107 |