CAS #:

Linear Formula:

MgS2O3• 6H2O

MDL Number:


EC No.:



(2N) 99% Magnesium Thiosulfate Hexahydrate
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Magnesium Thiosulfate Hexahydrate Properties (Theoretical)

Compound Formula H12MgO9S2
Molecular Weight 244.51
Appearance Crystalline
Melting Point 170 °C
Boiling Point N/A
Density 1.818 g/cm3
Solubility in H2O Soluble
Storage Temperature Ambient temperatures
Exact Mass 243.977 g/mol
Monoisotopic Mass 243.977 g/mol

Magnesium Thiosulfate Hexahydrate Health & Safety Information

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Precautionary Statements P261-P280a-P305+P351+P338-P304+P340-P405-P501
RTECS Number OM4610000
Harmonized Tariff Code 2832.30
Transport Information NONH for all modes of transport
GHS Pictograms

About Magnesium Thiosulfate Hexahydrate

Magnesium Thiosulfate Hexahydrate is generally immediately available in most volumes. American Elements manufactures materials to many standard grades when applicable including Mil Spec (military grade), ACS, Reagent and Technical Grades; Food, Agricultural and Pharmaceutical Grades, Optical, Semiconductor, and Electronics Grades, and follows applicable USP, EP/BP, and ASTM testing standards. Most materials can be produced in high and ultra high purity forms (99%, 99.9%, 99.99%, 99.999%, and higher). Standard and custom packaging is available. Additional technical, research and safety (SDS) information is available. Please request a quote above to receive pricing information based on your specifications.

Magnesium Thiosulfate Hexahydrate Synonyms

Magnesium hyposulfite hexahydrate, Thiosulfuric acid (H2S2O3), magnesium salt (1:1), hexahydrate (9CI), MgO3S2•6H2O, UNII 59481J5EHA; CAS 10124-53-5 (Anhydrous), Magnosulf

Chemical Identifiers

Linear Formula MgS2O3• 6H2O
MDL Number MFCD00169871
EC No. 233-340-5
Pubchem CID 26002
IUPAC Name magnesium; dioxido-oxo-sulfanylidene-λ6-sulfane; hexahydrate
SMILES O.O.O.O.O.O.[O-]S(=O)(=S)[O-].[Mg+2]
InchI Identifier InChI=1S/Mg.H2O3S2.6H2O/c;1-5(2,3)4;;;;;;/h;(H2,1,2,3,4);6*1H2/q+2;;;;;;;/p-2

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

Magnesium Bohr ModelSee more Magnesium products. Magnesium (atomic symbol: Mg, atomic number: 12) is a Block S, Group 2, Period 3 element with an atomic mass of 24.3050. The number of electrons in each of Magnesium's shells is [2, 8, 2] and its electron configuration is [Ne] 3s2. The magnesium atom has a radius of 160 pm and a Van der Waals radius of 173 pm. Magnesium was discovered by Joseph Black in 1775 and first isolated by Sir Humphrey Davy in 1808. Magnesium is the eighth most abundant element in the earth's crust and the fourth most common element in the earth as a whole. Elemental MagnesiumIn its elemental form, magnesium has a shiny grey metallic appearance and is an extremely reactive. It is can be found in minerals such as brucite, carnallite, dolomite, magnesite, olivine and talc. Commercially, magnesium is primarily used in the creation of strong and lightweight aluminum-magnesium alloys, which have numerous advantages in industrial applications. The name "Magnesium" originates from a Greek district in Thessaly called Magnesia.

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 02, 2020
Los Angeles, CA
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