CAS Number: 877-24-7 Formula: C8H5KO4 Density: 1.636 g/mL Freezing Point: 295-300°C Solubility: Water Synonyms: Potassium Biphthalate, Potassium Acid Phthalate Shelf Life: 36 MonthsChemicals for science education are available in easy-to-use formats with instructions for students to be introduced to a variety of subjects. 104874 View Pricing & Availability. SDS; CoA; Molar Mass: 204.22 g/mol EC Number: 212-889-4 Hill Formula: C₈H₅KO₄ CAS #: 877-24-7 Grade: Reag. KHP does not undergo decomposition during storage; has a relatively high equivalent weight (thus reducing errors when weighed to 0.1 mg precision); is readily soluble in water; and is stoichiometric and instantaneous in reactions. It finds application as a useful standard for total organic carbon testing. ... KHP is slightly acidic, and it is often used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately. Disodium phthalate | C8H4Na2O4 | CID 85215 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. K-HPTHAT-02-C , K-HPTHAT-03-C , K-HPTHAT-04-C , K-HPTHAT-05-C , K-HPTHAT-025-C , K-HPTHAT-035-C CAS #: 877-24-7 Relevant identified uses of the substance: Scientific research and development Supplier details: American Elements The water solubility of hydrogen potassium phthalate was determined to be 83 g/l at 20 deg C and 330 g/l at 100 deg C. These values suggests that hydrogen potassium phthalate is highly soluble in water. - Find MSDS or SDS, a COA, data sheets and more information. The use of KHP as a primary standard for acidometric titration and pH measurements is well established.23 More recently material certified for use as a calibrator for titrimetric analysis has been shown to be suitable for use as an internal standard for qNMR assignments of analytes soluble in D 2 O. Ph Eur,Reag. Potassium hydrogen phthalate, often called simply KHP, is an acidic salt compound. Data from authoritative and estimated databases suggests that the water solubility of hydrogen potassium phthalate was determined to be 83300 mg/l. 877-24-7: Potassium Hydrogen Phthalate (KHP) is a classic primary standard substance in that it is readily available in high purity; is relatively inexpensive; is easy to dry; is neither hygroscopic, oxidized by air, … Preparation. Overview; Supporting Documentation; Related Product & Applications; … Preparation Physical. All of these polar bonds are capable of ion-dipole, hydrogen bonding, and/or dipole-dipole forces that result in the dissolution of the solid to create a homogeneous solution. Continue Reading. Solubility. Potassium hydrogen phthalate MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents. CAS 877-24-7, pH 4.0 (50 g/l, H₂O, 20 °C). It is water soluble and available in high purity. Potassium hydrogen phthalate is a colorless crystalline solid, moderate soluble in water. Solubility Information: Solubility in water: 80g/L (20°C). Will likely be mobile in the environment due to its water solubility. - Find MSDS or SDS, a COA, data sheets and more information. Ph Eur. The relevant conversion is the exothermic reaction of potassium chloride and sulfuric acid: KCl + H 2 SO 4 → HCl + KHSO 4. The potassium hydrogen phthalate (KHP) is a suitable primary standard because it is stable as a solid and in solution, it is soluble in water, it is not hygroscopic, it is easily dried and its molecular mass (approximately 200 g mol-1) results in convenient and accurately determined masses of the substance for making. Potassium hydrogen phthalate makes for a good primary standard because it is stable, high in purity, non-hydroscopic, highly soluble, non-toxic, high in molecular weight, cheap, and available.

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