This standard is applicable to the food additive calcium hydroxide which is calcined and digested of such materials as limestone or limestone-containing oyster shell.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
3 Molecular Formula and Relative Molecular Mass
3.1 Molecular formula
Ca(OH)2
3.2 Relative molecular mass
74.09 (according to Atomic Weights of the Elements 2007)
4 Technical Requirements
4.1 Sensory requirements: shall be in accordance with those specified in Table 1.
Table 1 Sensory Requirements
Item Requirement Inspection method
Color White Take appropriate amount of specimen, put it into a 50mL beaker, and observe its color and structural state in natural light.
Structural state Powder
4.2 Physical and chemical indexes: shall be in accordance with those specified in Table 2.
