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· · COA & SDS available for every product · Same-day shipping on in-stock items Potassium sulfate - CP, ≥98.5% , CAS No.7778-80-5
GRADE & PURITY CP ? Chemically Pure grade — moderate purity above technical grade but below analytical. Use for general lab reactions where ultra-low impurities aren't critical. ≥98.5% Synonyms
POTASSIUM SULFATE|7778-80-5|Dipotassium sulfate|Potassium sulphate|Sulfuric acid dipotassium salt|Arcanum duplicatum|Sulfuric acid, potassium salt|Sulfuric acid, dipotassium salt|Kalium sulphuricum|Tartarus vitriolatus|Potassiumsulfate|Caswell No. 702|Kal
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Why this grade CP, ≥98.5% CP for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
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Storage & shipping Room temperature Ships Normal Check lot-specific COA for exact specifications.
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Quality documents SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
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Literature proof Cited in 291 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Specifications Synonyms
POTASSIUM SULFATE | 7778-80-5 | Dipotassium sulfate | Potassium sulphate | Sulfuric acid dipotassium salt | Arcanum duplicatum | Sulfuric acid, potassium salt | Sulfuric acid, dipotassium salt | Kalium sulphuricum | Tartarus vitriolatus | Potassiumsulfate | Caswell No. 702 | Kal
Specifications & Purity
CP, ≥98.5%
Names and Identifiers Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/508815369
Canonical Smiles
[O-]S(=O)(=O)[O-].[K+].[K+]
IUPAC Name
dipotassium;sulfate
InChIKey
OTYBMLCTZGSZBG-UHFFFAOYSA-L
INCHI
1S/2K.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
Isomeric SMILES
[O-]S(=O)(=O)[O-].[K+].[K+]
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11343146&ln=
Documentation 📋 Safety Data Sheet (SDS) Comprehensive hazard, handling, storage, and regulatory compliance document.
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✅ Certificate of Analysis (COA) Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA → 📊 Datasheet Quick-reference summary of product specifications and applications.
View datasheet → 🔬 Specification Sheet Full quality attributes and acceptance criteria for this grade.
View spec sheet →
Advanced Data Taxonomic Classification Kingdom Inorganic compounds Superclass Mixed metal/non-metal compounds Class Alkali metal oxoanionic compounds Subclass Alkali metal sulfates Intermediate Tree Nodes Not available Direct Parent Alkali metal sulfates Alternative Parents Inorganic salts Inorganic oxides Molecular Framework Not available Substituents Alkali metal sulfate - Inorganic oxide - Inorganic salt Description This compound belongs to the class of inorganic compounds known as alkali metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is an alkali metal. External Descriptors potassium salt Data sources 1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.
3D Structure Certificates (CoA,COO,BSE/TSE and Analysis Chart) Chemical and Physical Properties Sensitivity Moisture sensitive. Boil Point(°C) 1689 °C/1013 hPa Melt Point(°C) 1067°C Molecular Weight 174.260 g/mol XLogP3 Hydrogen Bond Donor Count 0 Hydrogen Bond Acceptor Count 4 Rotatable Bond Count 0 Exact Mass 173.879 Da Monoisotopic Mass 173.879 Da Topological Polar Surface Area 88.600 Ų Heavy Atom Count 7 Formal Charge 0 Complexity 62.200 Isotope Atom Count 0 Defined Atom Stereocenter Count 0 Undefined Atom Stereocenter Count 0 Defined Bond Stereocenter Count 0 Undefined Bond Stereocenter Count 0 The total count of all stereochemical bonds 0 Covalently-Bonded Unit Count 3
Documents & Articles Citations of This Product Solution Calculators Molarity Calculator Determine the necessary mass, volume, or concentration for preparing a solution.
Dilution Calculator Determine the dilution needed to prepare a stock solution.
Reconstitution Calculator Reviews Need help choosing the grade? Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.
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