Ferric Subsulfate

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Ferric Subsulfate
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(2N5) 99.5% Ferric Subsulfate
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(3N) 99.9% Ferric Subsulfate
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(3N5) 99.95% Ferric Subsulfate
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(4N) 99.99% Ferric Subsulfate
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(5N) 99.999% Ferric Subsulfate
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Ferric Subsulfate Properties (Theoretical)

Compound Formula Fe4H2O22S5
Molecular Weight 737.708
Appearance Yellowish-brown solid
Melting Point N/A
Boiling Point N/A
Density N/A
Solubility in H2O N/A
Exact Mass 737.503877
Monoisotopic Mass 737.503877

Ferric Subsulfate Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
RTECS Number N/A
Transport Information N/A

About Ferric Subsulfate

Ferric Subsulfate 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.

Ferric Subsulfate Synonyms

Iron dihydroxide pentakis(sulphate); Iron(3+) hydroxide sulfate (4:2:5); Iron hydroxide sulfate; iron dihydroxide pentakis(sulphate); tetrairon(3+) ion dioxidanide pentasulfate

Chemical Identifiers

Linear Formula Fe4(OH)2(SO4)5
MDL Number N/A
EC No. 215-179-2
Pubchem CID 159372
IUPAC Name iron(3+); dihydroxide; pentasulfate
SMILES [Fe+3].[Fe+3].[Fe+3].[Fe+3].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O.[OH-].[OH-].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
InchI Identifier InChI=1S/4Fe.5H2O4S.2H2O/c;;;;5*1-5(2,3)4;;/h;;;;5*(H2,1,2,3,4);2*1H2/q4*+3;;;;;;;/p-12

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 Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Iron products. Iron (atomic symbol: Fe, atomic number: 26) is a Block D, Group 8, Period 4 element with an atomic weight of 55.845. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electron configuration is [Ar] 3d6 4s2. Iron Bohr ModelThe iron atom has a radius of 126 pm and a Van der Waals radius of 194 pm. Iron was discovered by humans before 5000 BC. In its elemental form, iron has a lustrous grayish metallic appearance. Iron is the fourth most common element in the Earth's crust and the most common element by mass forming the earth as a whole. Iron is rarely found as a free element, since it tends to oxidize easily; it is usually found in minerals such as magnetite, hematite, goethite, limonite, or siderite.Elemental Iron Though pure iron is typically soft, the addition of carbon creates the alloy known as steel, which is significantly stronger.


See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.


June 22, 2024
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