Magnesia (deadburned)

Is unreactive magnesium oxide. Is actually natural magnesite calcined (burned) at very high temperatures so that it can be used for manufacturing of refractory bricks. Hence a refractory raw material. Produced in briquette form, shares similar characteristics to that of gravel in terms of size, appearance and handling. As a result of this form of burning magnesia, it results in a non-reactive magnesium oxide which does not spontaneously heat or hydrate. Deadburned magnesia comes in either white, brown or grey. Dry and dusty. Bulk density: 2,000 kg/m3.
Trade Names (Synonyms)
Dead-burned magnesia - deadburned magnesite, burnt magnesia - burnt magnesite - refractory magnesia - magnesium oxide MgO - magnesite, clinker - magnesia clinker - magnesia electro-fused.


If you are a member, please login using the orange button at the top of the page to view the full article, or register.

If you are unsure of your membership, wish to change your membership status, or wish to become a member please contact


Got a question or some feedback?

Contact Maritime Information

In order to ensure that the BIMCO cargo database contains updated information as far as possible, we welcome any feedback in the form of comments, response or current information or data regarding a specific cargo.

Email them

IMSBC Code webinar

BIMCO's Ai Cheng Foo presents the IMSBC Code, potential pitfalls and use.

IMSBC Code webinar

A one-hour long webinar session on the IMSBC Code, highlighting two very relevant issues for members; i.e. on “How to carry bulk cargoes safely – a shared risk?” and “ What is it – identifying cargo hazards under the IMSBC Code”.

Latest Related News

View All News


Chartering help & advice

This section contains a comprehensive source of information and guidance on chartering related matters. You will find invaluable information on many aspects of chartering distilled from our many years’ experience on advising members.