Magnesium hydroxide

氢氧化镁

Also known as: Magnesium hydrate, Caustic magnesite, Magnesia 87250, Maggran MH

Magnesium hydroxide (CAS 1909-42-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H2MgO2 and a molecular weight of 58.31970 g/mol. It is also known as Magnesium hydrate, Caustic magnesite and Magnesia 87250. Key property: a melting point of 350ºC(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1909-42-8
Jingsj CID
J-1524777-3
Molecular Formula
H2MgO2
Chinese Name
氢氧化镁
Molecular Weight
58.31970 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point350ºC(lit.)

Frequently Asked Questions

What is the CAS number of Magnesium hydroxide?

The CAS number of Magnesium hydroxide is 1909-42-8.

What are the molecular formula and molecular weight of Magnesium hydroxide?

Magnesium hydroxide has molecular formula H2MgO2 and molecular weight 58.31970 g/mol.

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

Last updated:

How to cite: Jingsj. "Magnesium hydroxide (CAS 1909-42-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524777-3 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.