Hummel Croton Inc.
10 Harmich Road
South Plainfield, NJ 07080

Tel: 908-754-1800
Fax: 908-754-1815

Data Sheet
Magnesium Carbonate

Product Code 13-0582
Magnesium Oxide 40.0-45.0%
Calcium Oxide 1.0% Max
Chloride 0.10% Max
Iron 0.05% Max
Density 0.27 g/cc
Screen Analysis- 325 Mesh 97.0% Min


PACKAGING:50, 100 lb. Polylined Fiber Drums

USES: Magnesium carbonate, also called magnesium carbonate hydroxide is used for fireproofing, heat insulating, preparing effervescent magnesium citrate. It is also used for clarifying liquids by filtration in tooth and face powders, in polishing compounds, manufacture mineral waters, pigments, and paper fillers for rubber.

HANDLING: Adequate ventilation required. Keep containers sealed. Store in cool, dry place. OSHA PEL and ACGIH TLV-TWA have been established for this compound at 10mg/m3. See SDS for more information.

PROPER SHIPPING NAME: Magnesium Carbonate


Magnesium Carbonate

CAS Number 546-93-0
RTEC Number OM 2470000
Water Solubility Insoluble
EINEC Number 2351927
Molecular Wt. 84.32
Molecular Formula MgCO3

No warranty, expressed or implied, or merchantability, fitness for a particular purpose or otherwise is made, except that the products herein discussed comply with the chemical description on the labels. Buyer assumes risks of the use, storage and handling. Hummel shall not be liable for any incidental or consequential damages arising directly or indirectly in connection with the purchase, use, storage or handling of this product. The information contained herein is, to the best of our knowledge, true and accurate. However, all recommendations or suggestions are made without guarantee, since the conditions of use are beyond our control. We disclaim any liability incurred in connection with the use of these data or suggestions. This information is not to be taken as a license to operate under, or a recommendation to infringe any patent(s). The observance of all regulations and patents is the responsibility of the user. No agent, representative or employee of this company is authorized to vary any terms of this notice.