Observe the hydrogen atoms bound to oxygen and nitrogen atoms and carbon atoms bound to oxygen atoms in Figure 2. Potassium hydrogen phthalate, KHC8H4O4 (abbreviated KHP), is a non-hygroscopic, crystalline, solid that behaves as a monoprotic acid. 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. Product Name: Potassium Hydrogen Phthalate Product Number: All applicable American Elements product codes, e.g. Availability. Preparation. Will likely be mobile in the environment due to its water solubility. Potassium hydrogen phthalate MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents. 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. Overview; Supporting Documentation; Related Product & Applications; … Potassium bisulfate is a by-product in the production of nitric acid from potassium nitrate and sulfuric acid: Articles of Potassium hydrogen phthalate … Potassium hydrogen phthalate, or KHP, which can be used to standardize perchloric acid and an aqueous base in an acetic acid solution; Secondary Standard . COVID-19 is an emerging, rapidly evolving situation. Potassium Hydrogen Phthalate AR: Synonym: Potassium Phthalate: CAS No. CAS: 877-24-7: Molecular Formula: C 8 H 5 KO 4: Molecular Weight (g/mol) 204.22: MDL Number: MFCD00013070: InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M: Synonym: 1,2-benzenedicarboxylic acid, monopotassium salt, hydrogen potassium phthalate, monopotassium phthalate, phthalic acid monopotassium salt, phthalic acid potassium salt, phthalic acid, monopotassium salt, potassium acid phthalate, potassium … USP. Kalium-2-carboxyben zoat [German] [ACD/IUPAC Name] khp. 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. 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. Also known as potassium acid phthalate, potassium biphthalate, and KHP creates the chemical reaction with NaOH 〖KHC_8 H_4 O_4〗_((s))+〖NaOH〗_((aq)) (→) 〖KNaC_8 H_4 O_4〗_((aq))+〖H_2 O〗_((l)) The titration was performed by . Potassium hydrogen phthalate is used as a primary standard for acid- base titrations as well as for calibrating pH meters and for the preparation of volumetric alkali solutions. Soluble in water. Concentration Of Acid … Notes. Equation 1 below shows the solubility product equation of KHP. Data from authoritative and estimated databases suggests that the water solubility of hydrogen potassium phthalate was determined to be 83300 mg/l. 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. 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. Potassium Hydrogen Phthalate Potassium Acid Phthalate, KHP: Chemical Formula: HOCO(C 6 H 4)COOK: Formula Weight: 204.22: Equivalent Weight: 204.22 (Molar = Normal) CAS No. Potassium hydrogen phthalate, KHC8H4O4 (abbreviated KHP), is a non-hygroscopic, crystalline, solid that behaves as a monoprotic acid. It forms white powder, colorless crystals, a CAS: 877-24-7: Molecular Formula: C 8 H 5 KO 4: Molecular Weight (g/mol) 204.22: MDL Number: MFCD00013070: InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M: Synonym: potassium hydrogen phthalate, potassium biphthalate, monopotassium phthalate, potassium acid phthalate, hydrogen potassium phthalate, phthalic acid monopotassium salt, 1,2-benzenedicarboxylic acid, … HMIS RATING … More than 1 million tons were produced in 1985 as the initial stage in the Mannheim process for producing potassium sulfate. Secondary standards are commonly used to calibrate analytical methods. ° of Potassium Hydrogen Phthalate In this experiment you will determine the solubility and solubility product constant, K sp, of Potassium Hydrogen Phthalate (KHC 8 H 4 O 4 abbreviated as KHP) at various temperatures. Chemical Name or Material: Potassium hydrogen phthalate: Insoluble Matter: 0.005% max: Color: White: Quantity: 100g: CAS: 877-24-7: Linear Formula: 2-(HO 2 C)C 6 H 4 CO 2 K: Beilstein: 09, 791 It is not hygroscopic. Potassium hydrogen phthalate is a colorless crystalline solid, moderate soluble in water. Product name : Potassium hydrogen phthalate Product Number : P1088 Brand : Sigma-Aldrich CAS-No. 104874 View Pricing & Availability. Ph Eur. SDS; CoA; Molar Mass: 204.22 g/mol EC Number: 212-889-4 Hill Formula: C₈H₅KO₄ CAS #: 877-24-7 Grade: Reag. Potassium hydrogen phthalate is neutralized completely with potassium hydroxide or carbonate to dipotassium phthalate. Hydrogen potassium phthalate. It is water soluble and available in high purity. Potassium phthalate monobasic 6 Products Synonym: KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate Ph Eur,Reag. IDENTIFICATION. Secondly, why is NaOH not used as a primary standard? It is water soluble and available in high purity. - Find MSDS or SDS, a COA, data sheets and more information. Other solubilities: 330g/L water (100°C), slightly soluble in alcohol: Formula Weight: 204.22: Physical Form: Crystalline Powder: Percent Purity: 99+% Chemical Name or Material: Potassium hydrogen phthalate, 99+% Show More Show Less Potassium hydrogen phthalate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 4.00₅ (25°C) Certipur®. Potassium Hydrogen Phthalate (KHP) is the monopotassium salt of phthalic acid. POTASSIUM HYDROGEN PHTHALATE 877-24-7 No Formula C8H5O4K Synonyms Hydrogen potassium phthalate * Phthalic acid, monopotassium salt * Potassium acid phthalate * Potassium biphthalate * Potassium hydrogen phthalate RTECS Number: CZ4326000 Section 3 - Hazards Identification EMERGENCY OVERVIEW Caution: Avoid contact and inhalation. It acts as buffer in pH determination. potassium hydrogen phthalate KHC 8H 4O 4 etc.). Potassium hydrogen phthalate Volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. 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, … 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. Chemsrc provides Potassium hydrogen phthalate(CAS#:877-24-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Needless to say in this quantitative experiment extra care was given in taking and recording measurements. Potassium Hydrogen Phthalate is easy to dry; is neither hygroscopic, oxidized by air, nor affected by Carbon Dioxide. Slightly soluble in alcohol. Its solubility equilibrium in water is: KHC4H4O6 (s) K+ (aq) + HC4H4O6- (aq) The HC4H4O6- (aq) ion contains one acidic hydrogen, so that the quantity of potassium hydrogen tartrate in solution can be determined by titration with a base. It is stable in air and is not hygroscopic. It finds application as a useful standard for total organic carbon testing. Possible sensitizer. Applications. A related term is secondary standard, a chemical that has been standardized against a primary standard for use in a specific analysis. Solubility Information: Solubility in water: 80g/L (20°C). CAS 877-24-7, pH 4.0 (50 g/l, H₂O, 20 °C). Potassium hydrogen phthalate, often called simply KHP, is an acidic salt compound. Potassium hydrogen phthalate (KHP) is one of the ISRMs listed in Table 1. 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. Continue Reading. The relevant conversion is the exothermic reaction of potassium chloride and sulfuric acid: KCl + H 2 SO 4 → HCl + KHSO 4. Potassium Hydrogen Phthalate LD50 > 3200 mg/kg ( Rat ) Mercuric chloride 25.9 mg/kg ( Rat ) 1 mg/kg ( Rat ) ... Mobility The product is water soluble, and may spread in water systems. 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. Shop a large selection of products and learn more about Potassium hydrogen phthalate, ACS, 99.95-100.05%, Alfa Aesar™: Other Inorganic Compounds Chemicals . 877-24-7: Molecular Formula: C8H5KO4: Molecular Weight: 204.22: Description: White Crystalline Powder: Specifications: Solubility: Soluble In Water: Appearance Of Solution: Dissolve 20 Gm In Water To Produce 200 Ml. Potassium hydrogen phthalate is sold by chemical suppliers. Potassium hydrogen phthalate (KHC8H4O4) is the acid used for this trial to react to the standardized base NaOH. - Find MSDS or SDS, a COA, data sheets and more information. Because of its high purity, you can determine the number of moles of KHP directly from its mass and it is referred to as a primary standard. This monograph for Potassium Hydrogen Phthalate, Acidimetric Standard provides, in addition to common physical constants, a general description including typical appearance, applications, change in state (approximate), aqueous solubility, and density. NaOH, once its … Potassium hydrogen tartrate (cream of tartar), KHC4H4O6, is a weak acid, that is not very soluble in water. Recommended Products. ... 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. Solubility. Preparation Physical. 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 SECTION 1. CAS 877-24-7, pH 4.0 (50 g/l, H₂O, 20 °C). Because of its high purity, you can determine the number of moles of KHP directly from its mass and it is referred to as a primary standard.