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Agency Response Letter GRAS Notice No. GRN 000298

Return to inventory listing: GRAS Notice Inventory

See also Generally Recognized as Safe (GRAS) and about the GRAS Notice Inventory

CFSAN/Office of Food Additive Safety

October 30, 2009

Elliot Harrison
Lewis & Harrison
122 C. St., NW, Suite 740
Washington, DC 20001

Re: GRAS Notice No. GRN 000298

Dear Mr. Harrison:

The Food and Drug Administration (FDA) is responding to the notice, dated June 11, 2009, that you submitted on behalf of Cabot Corporation in accordance with the agency’s proposed regulation, proposed 21 CFR 170.36 (62 FR 18938; April 17, 1997; Substances Generally Recognized as Safe (GRAS); the GRAS proposal). FDA received the notice on July 13, 2009, filed it on July 14, 2009, and designated it as GRAS Notice No. GRN 000298.

The subject of the notice is silicon dioxide. The notice informs FDA of the view of Cabot Corporation that silicon dioxide is GRAS, through scientific procedures for use in a variety of foods and food-packing materials.

In a letter dated October 9, 2009, you withdrew your notice. Given your letter, we ceased to evaluate your GRAS notice, effective October 9, 2009, the date that we received your letter.

In accordance with proposed 21 CFR 170.36(f), a copy of the text of this letter responding to GRN 000298, as well as a copy of the information in this notice that conforms to the information in the GRAS exemption claim (proposed 21 CFR 170.36(c)(1)), is available for public review and copying via the FDA home page at To view or obtain an electronic copy of the text of the letter, follow the hyperlinks from the “Food” topic to the “Food Ingredients and Packaging” section to the “Generally Recognized as Safe (GRAS)” page where the GRAS Inventory is listed.


Antonia Mattia, Ph.D.
Division of Biotechnology and GRAS Notice Review
Office of Food Additive Safety
Center for Food Safety and Applied Nutrition

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