Specification of Magnesium Carbonate

PRODUCT IDENTIFICATION
CAS. 23389-33-5 or 546-93-0
Chemical Formula MgCO3
Synonym:
Carbonate magnesium, Hydromagnesite, Magnesium carbonate, Magnesium(II) carbonate, Magnesite.
Physical and Chemical Properties
Physical state Solid. (Crystals solid.)
Odor Odorless
Molecular Weight 84.3 g/mole
Color White.
Melting Point Decomposition temperature: 662°C (1223.6°F)
Specific Gravity 2.958 (Water = 1)
Solubility
Insoluble in cold water, hot water.Soluble in dilute acids with effervescence.Insoluble in alcohol. Imparts slight alkaline reaction to water.
sales specification
APPEARANCE white crystalline granules
ASSAY (MgSiF6-6H2O) 98.0% min
FLUORIDE (F) 40.0% min
FREE ACID (H2SiF6) 1.0% max
SULFATES (SO4) 0.5% max
WATER INSOLUBLES 0.5% max
TRANSPORTATION
PACKING 25kgs in Bag
HAZARD CLASS 6.1
UN NO. 2853