Substance Information

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Key Regulatory data, the new Classification & Labelling (C&L) Inventory, and REACH Registration data can now be found in ECHA CHEM. For the time being regulatory data here are still updated daily. The old C&L Inventory was last updated on 30 September 2025. REACH Registration and C&L Inventory data will be removed from here by 18 December 2025. Due to a technical upgrade and the coming holidays, data on ECHA CHEM will remain frozen between 5 December 2025 and 10 January 2026.

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Substance Information

Substance Infocard

IC

Potassium sulfate

EC / List no.: 231-915-5

CAS no.: 7778-80-5

Mol. Formula: K2O4S

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Key datasets

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Regulatory context

Here you can find all of the regulations and regulatory lists in which this substance appears, according to the data available to ECHA. This substance has been found in the following regulatory activities (directly, or inheriting the regulatory context of a parent substance):

  • Substances indicated, in 2009, as being intended to be registered by at least one company in the EEA.
  • Substances for which classification and labeling data have been submitted to ECHA in a registration under REACH or notified by manufacturers or importers under CLP. Such notifications are required for hazardous substances, as such or in mixtures, as well as for all substances subject to registration, regardless of their hazard.
  • Substances listed in the EINECS, ELINCS, or NLP inventories.
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Substance names and other identifiers

Regulatory process names
Potassium sulfate
EC Inventory
Potassium sulfate
Other
potassium sulfate
Pre-Registration process
IUPAC names
Dipotassium Sulfate
C&L Inventory, Registration dossier, Other
Dipotassium sulfate
C&L Inventory, Registration dossier, Other
dipotassium sulfate
C&L Inventory, Registration dossier, Other
Dipotassium sulphate
Registration dossier
dipotassium sulphate
C&L Inventory, Registration dossier
dipottassium sulfate
C&L Inventory
K2SO4
Registration dossier
K2SO4
Registration dossier
Kaliumsulfat
C&L Inventory
not available
C&L Inventory
Potasio Sulfato
C&L Inventory
POTASSIUM SULFATE
C&L Inventory, Registration dossier
Potassium Sulfate
C&L Inventory, Registration dossier
Potassium sulfate
C&L Inventory, Registration dossier
potassium sulfate
C&L Inventory, Registration dossier
Potassium Sulfate
Registration dossier
Potassium sulfate
Registration dossier
potassium sulfate
Registration dossier
Potassium Sulfate (KCKK)
Registration dossier
Potassium sulfate (KHSO4<1%)
Registration dossier
Potassium Sulfate (VMU)
Registration dossier
POTASSIUM SULPHATE
C&L Inventory
Potassium Sulphate
C&L Inventory
Potassium sulphate
C&L Inventory
potassium sulphate
C&L Inventory
Potassium Sulphate
Registration dossier
Potassium sulphate
Registration dossier
potassium sulphate
Registration dossier
Potassium SulphateSulphate of Potash
Registration dossier
pottasium sulfate
C&L Inventory
Sels de potasse
Registration dossier
SOP
Registration dossier
Sulfuric acid dipotassium salt
C&L Inventory
Sulphate of Potash
Registration dossier
Trade names
ABS-P69
Registration dossier
Acid potassium sulfate
Registration dossier
Arcanite
Registration dossier
Dipotassium sulfate
Registration dossier
dipotassium sulfate
Registration dossier
Dipotassium sulphate
Registration dossier
Extraits de vinasses
Registration dossier
GSOP
Registration dossier
HORTISUL
Registration dossier
K2SO4
Registration dossier
KALISOP
Registration dossier
Kalium sulphuricum
Registration dossier
Kaliumsulfat
Registration dossier
MagPlon NPK 5-9-18
Registration dossier
MagPlon NPK z borem 5-9-23 + 0,1
Registration dossier
MagPlon PK 11-24
Registration dossier
Monopotassium hydrogen sulfate
Registration dossier
Monopotassium sulfate
Registration dossier
Multi-SOP
Registration dossier
Multi-SOP 0-0-51+42.5SO3
Registration dossier
potash of sulfur
Registration dossier
Potassium acid sulfate
Registration dossier
Potassium bisulfate
Registration dossier
Potassium bisulphate
Registration dossier
Potassium hydrogen sulfate
Registration dossier
Potassium hydrogensulphate
Registration dossier
Potassium hydrosulfate (KHSO4)
Registration dossier
Potassium Sulfate
Registration dossier
Potassium sulfate
Registration dossier
Potassium Sulfate soluble grade
Registration dossier
Potassium Sulphate
Registration dossier
Potassium sulphate
Registration dossier
Potassium sulphate (technical grade)
Registration dossier
Sels de potassium
Registration dossier
soluSOP
Registration dossier
SOP
Registration dossier
SOP-3 MC
Registration dossier
Sulfate of potash
Registration dossier
Sulfuric acid dipotassium salt
Registration dossier
Sulfuric acid potassium salt
Registration dossier
sulfuric acid, potassium salt
Registration dossier
Sulphate of Potash
Registration dossier
sulphate of potash
Registration dossier
®. SOP
Registration dossier
Other names
Potassium sulfate
Pre-Registration process
potassium sulphate
Pre-Registration process
Sulfuric acid potassium salt (1:2)
Pre-Registration process
Other identifiers
7778-80-5
EC Inventory, C&L Inventory, Registration dossier, Pre-Registration process, Other
CAS number