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Magnesium sulfate heptahydrate

Also known as: Epsom salts, Epsomite, Magnesium sulfate (1:1) heptahydrate, MgSO4·7H2O, Bitter salt, Magnesium(II), sulfate, heptahydrate, Sulfuric acid magnesium salt (1:1), heptahydrate, MAG-BIND EQUIPURE LIBR, Crystalline magnesium sulfate, Magnesium sulfate hydrate (1:1:7)

Magnesium sulfate heptahydrate (CAS 10034-99-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H14MgO11S and a molecular weight of 246.475 g/mol. Key properties include a melting point of 1124°C, a boiling point of 330ºC at 760 mmHg and a density of 2.66. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.
10034-99-8
Jingsj CID
J-1498433-2
Molecular Formula
H14MgO11S
Molecular Weight
246.475 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026
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Physicochemical Properties

Melting Point1124°C
Boiling Point330ºC at 760 mmHg
Density2.66
Exact Mass246.010727
PSA153.25000
Additional Property<0.01 (vs air)
Vapor Pressure3.35E-05mmHg at 25°C
Additional PropertyH2O: 1 M at 20 °C, clear, colorless

Customs & Trade Information

HS Code2833210000

Frequently Asked Questions

What is the CAS number of Magnesium sulfate heptahydrate?

The CAS number of Magnesium sulfate heptahydrate is 10034-99-8.

What are the molecular formula and molecular weight of Magnesium sulfate heptahydrate?

Magnesium sulfate heptahydrate has molecular formula H14MgO11S and molecular weight 246.475 g/mol.

Which suppliers offer Magnesium sulfate heptahydrate?

1 supplier(s) listed; request a quote for pricing.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Magnesium sulfate heptahydrate (CAS 10034-99-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498433-2 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.