Potassium Hydrogen Phosphate



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K-HPAT-02 (2N) 99% Potassium Hydrogen Phosphate Request
K-HPAT-025 (2N5) 99.5% Potassium Hydrogen Phosphate Request
K-HPAT-03 (3N) 99.9% Potassium Hydrogen Phosphate Request
K-HPAT-035 (3N5) 99.95% Potassium Hydrogen Phosphate Request
K-HPAT-04 (4N) 99.99% Potassium Hydrogen Phosphate Request
K-HPAT-05 (5N) 99.999% Potassium Hydrogen Phosphate Request


Potassium Hydrogen Phosphate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Di-potassium monohydrogen phosphate; Potassium phosphate dibasic; Dipotassium hydrogen phosphate; Dipotassium hydrogenphosphate; Potassium hydrogen phosphate (2:1:1); Potassium phosphate, dibasic, Potassium dibasic phosphate, sec.-Potassium phosphate, Dipotassium monophosphate, Dipotassium orthophosphate, Potassium monohydrogen phosphate, Potassium monophosphate, Dipotassium-O-phosphate

Chemical Identifiers

Formula K2HPO4
CAS 7758-11-4
Pubchem CID 24450
MDL MFCD00011383
EC No. 231-834-5
IUPAC Name dipotassium; hydrogen phosphate
Beilstein Registry No. N/A
SMILES [K+].[K+].[O-]P([O-])(=O)O
InchI Identifier InChI=1S/2K.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2


Compound Formula K2HPO4
Molecular Weight 174.18
Appearance Colorless to white crystals
Melting Point N/A
Boiling Point N/A
Density N/A
Exact Mass 173.888659
Monoisotopic Mass 173.888659

Health & Safety Info  |  MSDS / SDS

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A
Globally Harmonized System of Classification and Labelling (GHS) N/A

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

Related Products

PSee more Phosphorus products. Phosphorus (atomic symbol: P, atomic number: 15) is a Block P, Group 15, Period 3 element. The number of electrons in each of Phosphorus's shells is 2, 8, 5 and its electronic configuration is [Ne] 3s2 3p3. The phosphorus atom has a radius of 110.5.pm and its Van der Waals radius is 180.pm. Phosphorus is a highly-reactive non-metallic element (sometimes considered a metalloid) with two primary allotropes, white phosphorus and red phosphorus its black flaky appearance is similar to graphitic carbon. Compound forms of phosphorus include phosphates and phosphides. Phosphorous was first recognized as an element by Hennig Brand in 1669 its name (phosphorus mirabilis, or "bearer of light") was inspired from the brilliant glow emitted by its distillation.

KSee more Potassium products. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1. The potassium atom has a radius of 227.2 pm and a Van der Waals radius of 275 pm. Potassium was discovered and first isolated by Sir Humphrey Davy in 1807. Potassium is the seventh most abundant element on earth. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. As with other alkali metals, potassium decomposes in water with the evolution of hydrogen because of its reacts violently with water, it only occurs in nature in ionic salts. In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. The origin of the element's name comes from the English word 'potash,' meaning pot ashes, and the Arabic word qali, which means alkali. The symbol K originates from the Latin word kalium.


Recent Research & Development for Potassium

  • Potassium Bicarbonate Supplementation Lowers Bone Turnover and Calcium Excretion in Older Men and Women: A Randomized Dose-Finding Trial. Dawson-Hughes B, Harris SS, Palermo NJ, Gilhooly CH, Shea MK, Fielding RA, Ceglia L. J Bone Miner Res. 2015 May 19.
  • Range-resolved detection of potassium chloride using picosecond differential absorption light detection and ranging. Leffler T, Brackmann C, Ehn A, Kaldvee B, Aldén M, Berg M, Bood J. Appl Opt. 2015 Feb 10
  • Daily Sodium and Potassium Excretion Can Be Estimated by Scheduled Spot Urine Collections. Doenyas-Barak K, Beberashvili I, Bar-Chaim A, Averbukh Z, Vogel O, Efrati S. Nephron. 2015 May 19.
  • ATP-Sensitive Potassium Channel Activation Induces Angiogenesis in vitro and in vivo. Umaru B, Pyriochou A, Kotsikoris V, Papapetropoulos A, Topouzis S. J Pharmacol Exp Ther. 2015 May 14.
  • An Ankyrin-G N-terminal gate and casein kinase 2 dually regulate binding of voltage-gated sodium and KCNQ2/3 potassium channels. Xu M, Cooper EC. J Biol Chem. 2015 May 21.
  • Effects of 3,5-Diiodotyrosine and Potassium Iodide on Thyroid Function and Oxidative Stress in Iodine-Excess Wistar Rats. Liu D, Lin X, Yu F, Zhang M, Chen H, Bao W, Wang X. Biol Trace Elem Res. 2015 May 24.
  • Effect of cationic molecules on the oxygen reduction reaction on fuel cell grade Pt/C (20 wt%) catalyst in potassium hydroxide (aq, 1 mol dm-3). Ong AL, Inglis KK, Whelligan DK, Murphy S, Varcoe JR. Phys Chem Chem Phys. 2015 Apr 16. : Phys Chem Chem Phys
  • Comparison of modified Chicago sky blue stain and potassium hydroxide mount for the diagnosis of dermatomycoses and onychomycoses. Liu Z, Sheng P, Yang YP, Li W, Huang WM, Wang JD, Fan YM. J Microbiol Methods. 2015 Mar 9
  • Pretreatment of wheat straw with potassium hydroxide for increasing enzymatic and microbial degradability. Liu X, Zicari SM, Liu G, Li Y, Zhang R. Bioresour Technol. 2015 Feb 17
  • Effects of different cavity-disinfectants and potassium titanyl phosphate laser on microtensile bond strength to primary dentin. Oznurhan F, Ozturk C, Ekci ES. Niger J Clin Pract. 2015 May-Jun

Recent Research & Development for Phosphorus

  • Photooxidation and quantum confinement effects in exfoliated black phosphorus. Favron A, Gaufrès E, Fossard F, Phaneuf-L'Heureux AL, Tang NY, Lévesque PL, Loiseau A, Leonelli R, Francoeur S, Martel R. Nat Mater. 2015 May 25.
  • Effects of increasing nitrogen and phosphorus concentrations on phytoplankton community growth and toxicity during Planktothrix blooms in Sandusky Bay, Lake Erie. Davis TW, Bullerjahn GS, Tuttle T, McKay RM, Watson SB. Environ Sci Technol. 2015 May 20.
  • Location and Electronic Nature of Phosphorus in the Si Nanocrystal - SiO2 System. König D, Gutsch S, Gnaser H, Wahl M, Kopnarski M, Göttlicher J, Steininger R, Zacharias M, Hiller D. Sci Rep. 2015 May 22
  • Analysis of Adequacy of 25-Hydroxi vitamin D3 Supplementation in Patients on Hemodialysis and Parathormone, Calcium and Phosphorus Level in the Blood of These Patients. Prnjavorac B, Irejiz N, Kurbasic Z, Krajina K, Deljkic A, Sinanovic A, Fejzic J. Mater Sociomed. 2015 Apr
  • Phosphorus cycling. Major role of planktonic phosphate reduction in the marine phosphorus redox cycle. Van Mooy BA, Krupke A, Dyhrman ST, Fredricks HF, Frischkorn KR, Ossolinski JE, Repeta DJ, Rouco M, Seewald JD, Sylva SP. Science. 2015 May 15
  • Field-Effect Transistors Based on Amorphous Black Phosphorus Ultrathin Films by Pulsed Laser Deposition. Yang Z, Hao J, Yuan S, Lin S, Yau HM, Dai J, Lau SP. Adv Mater. 2015 May 13.
  • Quantum oscillations in a two-dimensional electron gas in black phosphorus thin films. Li L, Ye GJ, Tran V, Fei R, Chen G, Wang H, Wang J, Watanabe K, Taniguchi T, Yang L, Chen XH, Zhang Y. Nat Nanotechnol. 2015 May 18.
  • Association of Drug Effects on Serum Parathyroid Hormone, Phosphorus, and Calcium Levels With Mortality in CKD: A Meta-analysis. Palmer SC, Teixeira-Pinto A, Saglimbene V, Craig JC, Macaskill P, Tonelli M, de Berardis G, Ruospo M, Strippoli GF. Am J Kidney Dis. 2015 May 20.
  • Phosphorus recovery from biogas fermentation liquid by Ca-Mg loaded biochar. Fang C, Zhang T, Li P, Jiang R, Wu S, Nie H, Wang Y. J Environ Sci (China). 2015 Mar 1
  • Air Stable Transport in Graphene Contacted, Fully Encapsulated Ultra Thin Black Phosphorus-Based Field-Effect Transistors. Avsar A, Vera-Marun IJ, Tan JY, Watanabe K, Taniguchi T, Castro Neto AH, Barbaros O. ACS Nano. 2015 Mar 13.

Recent Research & Development for Phosphates

  • The viability of mouse spermatogonial germ cells on a novel scaffold, containing human serum albumin and calcium phosphate nanoparticles. Yadegar M, Hekmatimoghaddam SH, Nezami Saridar S, Jebali A. Iran J Reprod Med. 2015 Mar
  • Role of the sodium hydrogen exchanger regulatory factor 1 (NHERF1) in forward trafficking of the type IIa sodium phosphate cotransporter (NpT2a). Ketchem CJ, Khundmiri SJ, Gaweda AE, Murray R, Clark BJ, Weinman EJ, Lederer ED. Am J Physiol Renal Physiol. 2015 May 20:ajprenal.00133.2015.
  • Sintering and the mechanical properties of the tricalcium phosphate-titania composites. Ayadi I, Ben Ayed F. J Mech Behav Biomed Mater. 2015 May 14
  • Novel doped calcium phosphate-PMMA bone cement composites as levofloxacin delivery systems. Matos AC, Marques CF, Pinto RV, Ribeiro IA, Gonçalves LM, Vaz MA, Ferreira JM, António AJ, Bettencourt AF. Int J Pharm. 2015 May 19.
  • The effect of osteoimmunomodulation on the osteogenic effects of cobalt incorporated β-tricalcium phosphate. Chen Z, Yuen J, Crawford R, Chang J, Wu C, Xiao Y. Biomaterials. 2015 May 14
  • Effect of Organic Acids on Calcium Phosphate Nucleation and Osteogenic Differentiation of Human Mesenchymal Stem Cells on Peptide Functionalized Nanofibers. Barati D, Walters JD, Pajoum Shariati SR, Moeinzadeh S, Jabbari E. Langmuir. 2015 Apr 16. : Langmuir
  • Calcium Phosphate Scaffolds Combined with Bone Morphogenetic Proteins or Mesenchymal Stem Cells in Bone Tissue Engineering. Sun H, Yang HL. Chin Med J (Engl). 2015 20th Apr: Chin Med J (Engl)
  • Antimicrobial and immunomodulatory efficacy of extracellularly synthesized silver and gold nanoparticles by a novel phosphate solubilizing fungus Bipolaris tetramera. Fatima F, Bajpai P, Pathak N, Singh S, Priya S, Verma SR. BMC Microbiol. 2015 Feb 27: BMC Microbiol
  • Periostin Accelerates Bone Healing Mediated by Human Mesenchymal Stem Cell-Embedded Hydroxyapatite/Tricalcium Phosphate Scaffold. Heo SC, Shin WC, Lee MJ, Kim BR, Jang IH, Choi EJ, Lee JS, Kim JH. PLoS One. 2015 Mar 16
  • Effects of different cavity-disinfectants and potassium titanyl phosphate laser on microtensile bond strength to primary dentin. Oznurhan F, Ozturk C, Ekci ES. Niger J Clin Pract. 2015 May-Jun

Free Test Sample Program

We recognize many of our customers are purchasing small quantities directly online as trial samples in anticipation of placing a larger future order or multiple orders as a raw material for production. Since our primary business is the production of industrial quantities and/or highly consistent batches which can be used for commercial production and purchased repeatedly in smaller quantity, American Elements offers trial samples at no charge on the following basis. Within 6 months of purchasing materials directly online from us, you have the option to refer back to that order and advise that it is the intention of your company, institution or lab to either purchase a larger quantity, purchase the material in regular intervals or purchase more on some other basis.

We will then evaluate your future needs and assuming the quantity or number of future purchases qualify, we will fully credit your purchase price with the next order. Because of the many variables in the quantity and number of orders you may place, it is impossible to evaluate whether your future order(s) will qualify for this program prior to your placing your next order. Please know American Elements strongly desires to make this free sample program available to you and will make every effort to do so once your next order is placed.