Magnesium sulfate heptahydrate
A hydrate that is the heptahydrate form of magnesium sulfate. — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 10034-99-8 | ChEBI ↗ |
| Molecular formula | 7H2O.Mg.O4S | ChEBI ↗ |
| Molar mass | 246.473 g/mol | ChEBI ↗ |
| Monoisotopic mass | 246.01072 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:31795 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 246.48 g/mol | PubChem ↗ |
| Exact mass | 246.0107241 Da | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifiermagnesium sulfate heptahydratemagnesium sulfate--water (1/7)WRUGWIBCXHJTDG-UHFFFAOYSA-LO=S(=O)([O-])[O-].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[H]O[H].[Mg+2]InChI=1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Mass ↔ amount of substance
Calculated from sourced massUses 246.473 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.