Magnesium carbonate hydroxide

碱式碳酸镁

Also known as: Magnesium carbonate basic, Magnesium carbonate, basic, Magnesium hydroxide carbonate, Magnesium carbonate hydrated, MAGNESII SUBCARBONAS PONDEROSUS, Parteck Mg DC, Carbonic acid, magnesium salt (1:1), mix. with magnesium hydroxide, hydrate, EINECS 235-192-7, MFCD00149784

Magnesium carbonate hydroxide (CAS 12125-28-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula CH2Mg2O5 and a molecular weight of 142.634 g/mol. It is also known as Magnesium carbonate basic, Magnesium carbonate, basic and Magnesium hydroxide carbonate. Key properties include a melting point of 77-80 °C(lit.), a boiling point of 333.6ºC at 760 mmHg, a density of 2.15 g/cm3at 20°C (lit.) and a flash point of 169.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 12125-28-9
Jingsj CID: J-1013994-7
Molecular Formula: CH₂Mg₂O₅
Chinese Name: 碱式碳酸镁
Molecular Weight: 142.634 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	77-80 °C(lit.)
Boiling Point	333.6ºC at 760 mmHg
Density	2.15 g/cm3at 20°C (lit.)
Flash Point	169.8ºC

Frequently Asked Questions

What is the CAS number of Magnesium carbonate hydroxide?

The CAS number of Magnesium carbonate hydroxide is 12125-28-9.

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

Magnesium carbonate hydroxide has molecular formula CH2Mg2O5 and molecular weight 142.634 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Magnesium carbonate hydroxide (CAS 12125-28-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1013994-7 (accessed 2026-10-24).

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