Beschrijving
Potassium hydrogen phthalate (C₈H₅KO₄, CAS 877-24-7) is a ROTI®Star certified reference material for volumetry, supplied in an 80 g HDPE pack. The salt is described by the empirical formula C₈H₅KO₄, a molar mass of 204,23 g/mol and a density of 1,636 g/cm³, and it is listed under EG nr. 212-889-4. A flash point of 197,3 °C and a boiling point above 300 °C complete the published thermal data for this CRM. As a ROTI®Star CRM for volumetry, potassium hydrogen phthalate is intended for volumetric laboratory applications that call for this chemical identity and presentation. The 80 g HDPE pack provides a defined unit quantity of the CRM, matching the stated pack size for this ROTI®Star article. Physical constants published for the product are the molar mass (M) 204,23 g/mol and the density (D) 1,636 g/cm³, together with flash point 197,3 °C and boiling point >300 °C. This potassium hydrogen phthalate CRM is offered from manufacturer Carl ROTH in the ROTI®Star range for volumetry. Laboratories specifying this ROTI®Star CRM can use the 80 g HDPE unit identified by EG nr. 212-889-4.

