172.410—Calcium silicate.
         Calcium silicate, including synthetic calcium silicate, may be safely used in food in accordance with the following prescribed conditions:
    
    
        
        (a) 
         It is used as an anticaking agent in food in an amount not in excess of that reasonably required to produce its intended effect.
    
    
        
        (b) 
         It will not exceed 2 percent by weight of the food, except that it may be present up to 5 percent by weight of baking powder.