Magnesium sulfate vs magnesium chloride
Magnesium sulfate (MgO4S, CAS 7487-88-9) and magnesium chloride (Cl2Mg, CAS 7786-30-3) are both listed under inorganic chemicals.
Magnesium sulfate has a molar mass of 120.37 g/mol, magnesium chloride 95.21 g/mol.
Measured melting points are 1,124 °C for magnesium sulfate and 712 °C for magnesium chloride.
Magnesium sulfate carries the GHS signal word Warning, magnesium chloride Danger.
On CompoundList, 568 suppliers list magnesium sulfate and 387 suppliers list magnesium chloride.
Data last updated 7 October 2026
 |  | |
|---|---|---|
| Identity | ||
| Name in our database | Sulfuric acid magnesium salt (1:1) | Magnesium chloride |
| CAS number | 7487-88-9 | 7786-30-3 |
| Molecular formula | MgO4S | Cl2Mg |
| Molar mass | 120.37 g/mol | 95.21 g/mol |
| IUPAC name | magnesium sulfate | magnesium dichloride |
| EC number | 231-298-2 | 232-094-6 |
| Physical properties | ||
| Appearance | Colorless crystalline solid | Thin white to gray granules and/or flakes |
| Melting point | 1,124 °C | 712 °C |
| Boiling point | Not recorded | 1,412 °C |
| Density | 2.66 g/cm³ | 2.3 g/cm³ |
| Solubility | In water, 360 g/l @ 20 °C | 7.40 g/100 ml of alcohol @ 20 °C, 72.7 g/100 ml water @ 100 °C |
| LogP (octanol/water)Computed from the structure | -1.72 | -6.37 |
| Safety (GHS) | ||
| Signal word | Warning | Danger |
| Pictograms | ||
| Hazard statements |
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| Uses and classification | ||
| Uses and functions |
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| Category | Inorganic chemicals › Sulfates and sulfur salts | Inorganic chemicals › Chlorides and other halides |
| HS code | 283321Of magnesium | 282731Of magnesium |
| Market on CompoundList | ||
| Suppliers | 568 suppliers | 387 suppliers |
| Supplier countries | 60 countries, most in India, China, United States | 48 countries, most in India, United States, China |
| Price rangeOnly prices set by suppliers who manage their own profile | Price on request | Price on request |
Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.
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