Sodium metasilicate, food additive

Sodium metasilicate has food additive regulation status as boiler water additive in the preparation of steam that will contact food (23). In addition it is believed to be "prior sanctioned" under the Meat Inspection Act for hog scalding and tripe denuding. 

Sodium glucoheptonate Sodium metabisulfite Sodium metasilicate boiler water additive, food-contact Acrylic acid/sulfonic acid copolymer Diethylaminoethanol Hydrazine Polymaleic acid Potassium tripolyphosphate PPG-26 Sodium lignosulfonate Stearamine Trisodium NTA... 

Rats previously fed on specially purified foods showed increased growth rates from the addition to the diet of 500 mg/kg of silicon (as sodium metasilicate). 

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