This standard supersedes "Food Additive - Calcium Carbonate" (1898-2007).
Compared with GB 1898-2007, the main changes in this standard are as follows:
- The standard name is revised as "National Food Safety Standard - Food Additive - Calcium Carbonate (Light, Heavy)";
- The application scope of the standard is modified;
- Typing and classification are deleted, and corresponding index values are modified;
- Examination methods for magnesium, alkali metal, arsenic, fluorine, lead, mercury and cadmium are modified.
National Food Safety Standard
Food Additive - Calcium Carbonate (Light, Heavy)
食品安全国家标准
食品添加剂碳酸钙
（包括轻质和重质碳酸钙）
1 Scope
This standard is applicable to the food additive light calcium carbonate obtained through precipitation and the food additive heavy calcium carbonate obtained through pulverizing limestone, calcite and oyster shell.
2 Molecular Formula and Relative Molecular Mass
2.1 Molecular formula
CaCO3
2.2 Relative molecular mass
100.09 (as per 2013 international relative atomic mass)
3 Technical Requirements
3.1 Sensory requirements
Sensory requirements shall meet those specified in Table 1.
Table 1 Sensory Requirements
Item Requirements Examination method
Color and luster White or off-white Take proper amount of specimen and place it in a 50mL beaker, observe its color, luster and status in natural light
Status Powder
3.2 Physical and chemical indexes
Physical and chemical indexes shall meet those specified in Table 2.
Table 2 Physical and Chemical Indexes
Item Index Examination method
Content of calcium carbonate (CaCO3) (calculated in dry basis), w/% 98.0~100.5 A.4 in Appendix A
Insoluble matter in hydrochloric acid , w/% ≤ 0.2 A.5 in Appendix A
Free alkali Pass the test A.6 in Appendix A
Magnesium and alkali metal, w/% ≤ 1 A.7 in Appendix A
Loss on drying , w/% ≤ 2.0 A.8 in Appendix A
Barium (Ba)/(mg/kg) ≤ 300 A.9 in Appendix A
Cadmium (Cd)/(mg/kg) ≤ 2.0 A.10 in Appendix A or GB 5009.15
Fluorine (F)/(mg/kg) ≤ 50 GB/T 5009.18
Arsenic (calculated in As)/(mg/kg) ≤ 3.0 GB 5009.76
Lead (Pb)/(mg/kg) ≤ 3.0 GB 5009.12 or GB 5009.75
Mercury (Hg)(mg/kg) ≤ 1.0 GB 5009.17
Foreword i
1 Scope
2 Normative References
3 Requirements
4 Test Methods
5 Inspection Rules
6 Labelling , packaging , transportation and storage
Appendix A (Normative) Determination Method for Oil Content of the Fish Oil Microcapsule Surface
