Magnesium sulfate

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Magnesium sulfate heptahydrate CAS 10034-99-8

Magnesium sulfate CAS 10034-99-8

Name:    Magnesium sulfate heptahydrate
Synonyms:    MAGNESIUM SULFATE, HEPTAHYDRATE BIO-REFINED;MAGNESIUM SULFATE, HEPTAHYDRATE REAGENT (ACS);Magnesiumsulfateheptahydrate,98+%(ACS);MAGNESIUMSULFATE9.7%;MAGNESIUMSULFATEHEPTHYDRATE;MAGNESIUMSULFATE,HEPTAHYDRATE,BIOTECHGRADE;MAGNESIUMSULFATE,HEPTAHYDRATE,CRYSTAL,REAGENT,ACS;MAGNESIUMSULFATE,HEPTAHYDRATE,FCC
CAS:    10034-99-8
MF:    Mg.O4S.7H2O
MW:    246.47
EINECS:    600-073-4

Magnesium sulfate is an inorganic salt (chemical compound) containing magnesium, sulfur and oxygen, with the formula MgSO4. It is often encountered as the heptahydrate sulfate mineral epsomite (MgSO4·7H2O), commonly called Epsom salt, taking its name from a bitter saline spring in Epsom in Surrey, England, where the salt was produced from the springs that arise where the porous chalk of the North Downs meets non-porous London clay. The monohydrate, MgSO4·H2O is found as the mineral kieserite. The overall global annual usage in the mid-1970s of the monohydrate was 2.3 million tons, of which the majority was used in agriculture.
Anhydrous magnesium sulfate is used as a drying agent. The anhydrous form is hygroscopic (readily absorbs water from the air) and is therefore difficult to weigh accurately; the hydrate is often preferred when preparing solutions (for example, in medical preparations). Epsom salt has been traditionally used as a component of bath salts. Epsom salt can also be used as a beauty product. Athletes use it to soothe sore muscles, while gardeners use it to improve crops. It has a variety of other uses: for example, Epsom salt is also effective in the removal of splinters.
It is on the WHO Model List of Essential Medicines, the most important medications needed in a basic health system.

Density     2.66
Boiling Point     330ºC at 760 mmHg
Melting Point     1124°C
Vapor Density     <0.01 (vs air)
Vapor Pressure     3.35E-05mmHg at 25°C
Safety Info
HS Code     2833210000

Product Categories:    Inorganics;-;Food Additives;metal sulfate;Pharmaceutical raw materials
Mol File:    10034-99-8.mol
Magnesium sulfate heptahydrate Structure
Magnesium sulfate heptahydrate Chemical Properties
Melting point     1124°C
density     2.66
vapor density     <0.01 (vs air)
vapor pressure     <0.1 mm Hg ( 20 °C)
storage temp.     Store at RT.
solubility     H2O: 1 M at 20 °C, clear, colorless
form     Solid
Specific Gravity    1.68
color     White
PH    5.0-8.0 (25℃, 50mg/mL in H2O)
Water Solubility     Soluble in in water and acid. Slightly soluble in alcohol and glycerol.
λmax    λ: 260 nm Amax: 0.010
λ: 280 nm Amax: 0.010
Merck     14,5691
Stability:    Stable. Non-flammable. May slowly deteriorate in contact with air.
InChIKey    WRUGWIBCXHJTDG-UHFFFAOYSA-L
CAS DataBase Reference    10034-99-8(CAS DataBase Reference)
NIST Chemistry Reference    magnesium sulfate heptahydrate(10034-99-8)
Safety Information
Hazard Codes     Xi
Risk Statements     36/37/38
Safety Statements     24/25-36-26
WGK Germany     1
RTECS     OM4508000
TSCA     Yes
HS Code     28332100
MSDS Information

Magnesium sulfate heptahydrate Usage And Synthesis
Overview    Magnesium sulfate heptahydrate (MgSO4 7H2O) appears as white or colorless needle-like or inclined columnar crystal, being odorless, cool and slightly bitter with a molecular weight of 246.47, specific gravity 1.68, being easily soluble in water and slightly soluble in ethanol and glycerol. In 67.5 °C, it is soluble in its own crystal water. It can be subject to thermal decomposition with loss of four molecules of crystal water molecules at 70, 80 °C. It will lose all the crystalline water at 200 °C to become anhydrous product. In the air (dry), it is easy to be weathered into powder with heating gradually removing the crystal water molecules to become anhydrous magnesium sulfate. This product does not contain any toxic impurities. Magnesium sulfate heptahydrate is difficult to dissolve and thus being easier to weigh than anhydrous magnesium sulphate for being convenient for quantitative control in industry. It is mainly used for the manufacture of fertilizer, tanning, printing and dyeing, catalyst, papermaking, plastic, porcelain, pigments, matches, explosives and fireproof materials. It can be used for printing fine cotton, silk, as the weighting agent of cotton yarn and the filler of kapok products; as Epsom salt of medicine.

Uses    Magnesium Sulfate is a nutrient and dietary supplement. It is soluble in water and its solutions are neutral. It exists as crystals with a cooling, saline, bitter taste. It is also termed epsom salt.

Magnesium sulfate heptahydrate Preparation Products And Raw materials
Raw materials    Sulfuric acid -->Magnesium-->Magnesium oxide-->Magnesium carbonate-->DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4-->BITTERN-->DOLOMITE-->serpentine
Preparation Products    3-Chloroperoxybenzoic acid-->Magnesium oxide-->cis-9-Octadecenoic acid-->Potassium sulfate -->Lactic acid -->Dimethoate-->Magnesium hydroxide-->Gentamycin sulfate-->3-AMINO-N,N-DIMETHYLBENZYLAMINE-->TERT-BUTYL 2-(N-(3-AMINOBENZYL)-N-METHYLAMINO)ACETATE-->4-BENZYLOXY-3-INDOLEACETONITRILE-->Thiabendazole-->Thiazole-5-carboxaldehyde-->Nitrogen-Phosphorus-Potassium compound fertilizer with sulphur-->Magnesium stearate -->Trimethylsilylacetylene-->2,2,2-Trichloroethyl chloroformate-->2'-BENZYLOXYACETOPHENONE-->Tobramycin-->APATITE-->Emodin-->Bacillus thuringiensis-->MAGNESIUM TRISILICATE-->diammonium magnesium bis(sulphate)