Calcium carbonate series
Light calcium carbonate
Light calcium carbonate
Light calcium carbonate

Light calcium carbonate

Chemical Formula: CaCO3

CAS No.:471-34-1

Properties: White powder, odorless, tasteless, non-toxic, light weight, stable in the air, slight moisture absorption

 

Application

Widely applied in Industries such as rubber, plastics, papermaking, paint, building toothpaste etc.

Rubber industry: Calcium carbonate is the earliest filler used in rubber industry. It can increase the volume for saving cost. It also can improve the processing performance and the vulcanizing properties.

Plastic industry: improve the stability of plastic product size, improve the plastic processing performance and product heat resistance.

Papermaking: As paper filler, it not only reduce the pulp for saving cost, and helps in sizing of paper at neutral and alkaline PH.

Product Data

Limestone precipitation light calcium carbonate index


Precipitated light calcium carbonate

Index Item

HG/T 2226-2010

Rubber and plastics


Coatings

Papermaking

Top grade

First grade

Top grade

First grade

Top grade

First grade


Calcium carbonate (CaCO 3 ) % ≥

98

97

98

97

98

97


PH value

9-10

9-10.5

9-10

9-10.5

9-10

9-10.5


Volatile at 105 °C% ≤

0.4

0.5

0.4

0.6

1.0

Insolubles in hydrochloric acid% ≤

0.1

0.2

0.1

0.2

0.1

0.2


Sediment Volume ml/g ≥

2.8

2.4

2.8

2.6

2.8

2.6


Iron (Fe)% ≤

0.05

0.08

0.05

0.08

0.05

0.08


Manganese (Mn)% ≤

0.005

0.008

0.006

0.008

0.006

0.008


Sieve residue

125μm test sieve % ≤

Passed

0.005

Passed

0.005

Passed

0.005


45μm test sieve % ≤

0.2

0.4

0.2

0.4

0.2

0.4


Whiteness ≥

94

92

95

93

94

92


Oil absorption (g/100)≤

80

100

--

--

--

--


Black point ≤

5


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