Magnesium Sulphate Heptahydrate
CAS 10034-99-8·MgSO₄·7H₂O
Epsom salt in AR and pharmacopoeial grades. The heptahydrate — note the hydration state before calculating.
Grades offered
- EXTRA PUREExtra PureThe general-purpose tier on most Indian catalogues.
- ARAnalytical ReagentHigh purity with certified assay and stated trace-impurity limits.
- IPIndian PharmacopoeiaComplies with the current Indian Pharmacopoeia monograph.
- USPUnited States PharmacopeiaComplies with the current USP–NF monograph.
Typical applications
- Culture media
- Buffer preparation
- Hardness standard preparation
Magnesium Sulphate Heptahydrate
MgSO₄·7H₂O · M.W. 246.48 g/mol
- CAS
- 10034-99-8
- Assay
- ≥ 99%
- Batch
- Use before
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Pack sizes
- 500 g
- 5 kg
Worth knowing before you order
Several catalogues list this as "Magnesium Sulphate" without the hydrate. CAS 10034-99-8 is specifically the heptahydrate (MW 246.48). The anhydrous salt is CAS 7487-88-9 (MW 120.37) — a 2× difference in the mass you weigh.Identification
| CAS number | 10034-99-8 |
|---|---|
| Molecular formula | MgSO₄·7H₂O |
| Molecular weight | 246.48 g/mol |
| Assay | ≥ 99% |
| Also known as | Epsom salt, Magnesium sulfate heptahydrate |
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