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Basic information
- CAS
7778-80-5- Standard SMILES
O=S(=O)([O-])[O-].[K+].[K+]- InChIKey
OTYBMLCTZGSZBG-UHFFFAOYSA-L- Molecular formula
- K2SO4
- Average molar mass
- 174.26 g/mol
- Monoisotopic mass
- 173.87914284
Overview
Potassium sulfate is an inorganic potassium salt and a potassium salt.
Names & identifiers
- Preferred name
- Potassium Sulfate
- IUPAC
- dipotassium;sulfate
Names & synonyms
POTASSIUM SULFATE7778-80-5Dipotassium sulfatePotassium sulphateSulfuric acid dipotassium saltArcanum duplicatumSulfuric acid, dipotassium saltKalium sulphuricumTartarus vitriolatusKali sulphuricumPotassium sulfate (K2(SO4))K2SO4
Show more names
Sulfuric acid potassium salt (1:2)1K573LC5TVPotassium (as sulfate)DTXSID6029701INS NO.515(I)INS-515(I)E-515(I)CHEBI:32036
Database identifiers
- CAS
7778-80-5、10233-01-9- PubChem CID
- 24507
- DTXSID
DTXSID6029701- ChEMBL
CHEMBL2021424- ChEBI
CHEBI:32036- UNII
- 1K573LC5TV
- EC Number
- 231-915-5
- Nikkaji
- J43.949E
Properties
Computed structural propertiesFilling in
- Topological polar surface area
- 88.6 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 0
- Heavy atoms
- 7
- Formal charge
- 0
- Complexity
- 62.2
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
CosmeticsViscosity controlling; Bulking
pH
Between 5,5 and 8,5 (5 % solution)
AQ SOLN IS NEUTRAL; PH ABOUT 7
SpringerMaterials Propertiesdielectric constant
OdorODORLESS
TasteHARD, BITTER, SALINE TASTE
Food AdditivesFLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, MALTING OR FERMENTING AID -> FDA Substance added to food
Density
2.66
2.66 g/cm³
2.66 @25 °C
Color/Form
COLORLESS OR WHITE CRYSTALS, OR WHITE GRANULES OR POWDER
COLORLESS, RHOMBIC OR HEXAGONAL CRYSTALS
Solubility
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 89% (517 of 581) of all reports.
Danger
H318 (10.2%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
P264+P265, P280, P305+P354+P338, and P317 (click each P-code to see the statement)
Aggregated GHS information provided per 581 reports by companies from 9 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: Sulfuric acid, dipotassium salt
Regulation (EC) No 1333/2008 (amended)
Sulfuric acid potassium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Sulfuric acid potassium salt (1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 01-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15527
Dipotassium sulphate: Non hazardous
Other Safety InformationIMAP assessments - Sulfuric acid, dipotassium salt: Human health tier I assessment
Fire HazardsNot combustible.
Hazards SummaryA mild skin, eye, and respiratory tract irritant; [ICSC] A mild skin irritant; [eChemPortal: ERMA] May cause irritation; [MSDSonline]
EPA Safer ChemicalChemical: Potassium sulfate
Chemical DangersDecomposes on heating. This produces sulfur oxides.
Hazard Classes and CategoriesEye Dam. 1 (10.2%)
Chemistry & industry
Pharmacology
Mechanism of Action
Potassium is the major cation (positive ion) inside animal cells, while sodium is the major cation outside animal cells. The concentration differences of these charged particles causes a difference in electric potential between the inside and outside of cells, known as the membrane potential. The balance between potassium and sodium is maintained by ion pumps in the cell membrane. The cell membrane potential created by potassium and sodium ions allows the cell generate an action potential—a "spike" of electrical discharge. The ability of cells to produce electrical discharge is critical for body functions such as neurotransmission, muscle contraction, and heart function. Potassium is also an essential mineral needed to regulate water balance, blood pressure and levels of acidity.
FDA Pharmacological Classification
KALI SULPHURICUM
Increased Large Intestinal Motility [PE]; Potassium Salt [EPC]; Potassium Compounds [CS]; Osmotic Laxative [EPC]; Inhibition Large Intestine Fluid/Electrolyte Absorption [PE]; Osmotic Activity [MoA]
POTASSIUM SULFATE
Inhibition Large Intestine Fluid/Electrolyte Absorption [PE]; Osmotic Activity [MoA]; Potassium Compounds [CS]; Osmotic Laxative [EPC]; Increased Large Intestinal Motility [PE]; Potassium Salt [EPC]
KALI SULPH
Inhibition Large Intestine Fluid/Electrolyte Absorption [PE]; Osmotic Activity [MoA]; Increased Large Intestinal Motility [PE]; Potassium Salt [EPC]; Potassium Compounds [CS]; Osmotic Laxative [EPC]
Absorption, Distribution and ExcretionMostly urine but also skin and feces.
Uses & manufacturing
Uses
Used in gypsum cements, to make alum and glass, as a food additive, in fertilizers, as an accelerator in wallboard, as an expansion control agent for dental materials, as a medical and veterinary cathartic, and as a veterinary sulfate source; [HSDB]
Cement Producing [Category: Industry]
REAGENT IN ANALYTICAL CHEMISTRY; MEDICINE; GYPSUM CEMENTS; ALUM MFR; FOOD ADDITIVE
Related reactions
37 records
Compound notes
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