BASIC MAGNESIUM CARBONATE & GYMNASTIC CHALK

PREFACE

BASIC MAGNESIUM CARBONATE has been produced since 1950 and widely loved among customers for its superior quality in purity and lightness. In 1983, we developed Block "GYMNASTIC CHALK" which is shaped by de-watering magnesium carbonate slurry. Hereafter, we successively expanded the product line to Gym Chalk Nuggets. This series of chalk products are mainly used for gymnastics, rock climbing and weightlifting, and mostly exported to U.S.A and Europe. Some are exported to Australia and South Africa.

PHYSICAL AND CHEMICAL PROPERTIES

SEM PHOTOGRAPH (x 5000 )
CHEMICAL NAME: Basic Magnesium Carbonate
CHEMICAL FORMULA: 4MgCO3.Mg(OH)2.4H2O
CRYSTALLINE: Plate Crystal
REFRACTIVE INDEX: 1.52-1.53
SPECIFIC GRAVITY(g/cm3): 2.1-2.2

BASIC MAGNESIUM CARBONATE
A-102 A-106
MOISTURE % <5.0 <5.0
SiO2 % <0.3 <0.5
CaO % <0.5 <22.8
MgO % >41.0 >32.0
FINENESS (PASSED 120 MESH) % >99.93 >99.93
WHITENESS (KETT-C100) % >96.0 >93.0
BULK DENSITY g/cm3 <0.27 <0.34
IGNITION LOSS % >55.0 >52.0

APPLICATION

Industrial Grades: A-102、A-106

‧Used as filler for rubber (especially to enhance transparence), printing ink, pottery and porcelain

Gymnastic Chalk: Block Chalk, Gym Chalk Nuggets.

‧Used in sport activities like gymnastics, rock climbing, weightlifting and bowling to avoid slip

2 oz. Block Chalk

Gym Chalk Nuggets: Easy to be grabbed and crushed

 
 
 

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