Dear Valued Relation,

we would like to inform you that Van Mannekus has closed the plant location in Holland and that from June 30th 2018 onwards, customers will be delivered by Timab Magnesium or Grecian Magnesite.

Please contact :

Timab Magnesia

Grecian Magnesite


Magnesium Compounds

Magnesium Oxide can be used as a source in the production of Magnesium Salts such as Magnesium Stearate, sulfates, nitrates, acetates, chlorides and others. Applications vary from the pharmaceuticals and food industry to technical applications.

More specifically,
Resinate, to offset gravure printing ink
Sulphonate, fuel and lubricant additive for as management and detergent action
Bisulphite, filling agent in medical tablets and capsules
Basic Magnesium Carbonate, food additive, Pattisson Process
Magnesium Ferrite, electronic devices

Leather Tanning

In order to counteract the natural biodegradation of the animal skin collagen fibers, chrome tanning sulphate is required. This salt is added to an acidic solution containing the pelts while the pH is slowly raised to higher values to allow the chrome to react with and stabilize the collagen. In order to do so, pure natural Dead Burned Magnesia Grade low in iron and reactivity is used in the solution.

Rubber and Plastics

Magnesium Oxide can be used as an acid scavenger, scorch retarder or curing agent during the cross linking of several rubber compounds containing halogens or nitrile groups.

Other uses in the Rubber and Plastics industry include MgO as a thickening agent for sheet and bulk molding compounds, hardening agent during phenolic resin curing, and as the raw material of hydrotalcites in the acid scavenging additives in PVC and polyolefins. Too scientific??

Natural MgO can be used in the lower application spectrum of these applications, instead of high activity synthetic grades.

Magnesium Hydroxide both in powder and in liquid suspension could be used for the Phosphate removal, Struvite formation, pH neutralization and the neutralization of SO3 in Energy waste gas streams.


Magnesium Oxide is used as catalyst support, a supporting solid surface onto which the Catalyst itself can be installed, coated, impregnated or co-precipitated providing the required stability its operational environment of high pressures and temperatures, demands.

Specific applications include:

  • as a catalyst in isobutylene isomerization
  • as a support for steam reforming catalysts
  • as catalyst support and SOx absorbent in fluid catalytic cracking reactors
  • as raw material for hydrotalcite supported catalysts and process additives
  • as raw material for spinel supports.
  • as a catalyst in the emulsifier industry for the trans-esterification of glycerides, and catalytic transfer hydrogenolysis (e.g., keton reduction to alcohols) in fine organic chemicals industries

Pulp and Paper

The pulping stage of paper production is the process of breaking down the bulk structure of the fibre source  into the constituent fibers by chemical, mechanical or both means. Magnesium oxide is used in chemical pulping when the Sulfite process is followed. Magnesium Oxide can potentially find use also in the most widely used Kraft pulping Process.

The bleaching stage of the Pulp aims in increasing the brightness of the paper produced by modifying the color of the lignin in the pulp. Magnesium Oxide can be used in Oxygen and Hydorgen Peroxide bleaching processes in replacement of Caustic Soda as an alkali and Magnesium Sulfate as a cellulose protector/peroxide stabilizer with technical and financial benefits.

An additional application of magnesium oxide in the Paper and Pulp industry is found in the Wastewater Treatment that Paper and Pulping mills should use for the disposal of their water.

More in Wastewater Treatment

Food Additives

Nickel/Cobalt and Uranium Processing
Magnesium Oxide finds use in the precipitation of metals like Nickel, Cobalt and Uranium out of the acid leach solutions in certain hydrometallurgical processes or in the purification of these solutions. The specifications of the MgO provided for the precipitation depend on the individual process but in general are higher in purity, activity and particle size than those for purification processes.

PH Adjustor


Sugar Refining
Magnesium Oxide is used for the neutralization of the sugar beet juice and raw cane as well as for the reduction of evaporator scaling.