# Components of paper and paperboard in contact with dry food.
**CFR Correction**
In Title 21 of the Code of Federal Regulations, Parts 170 to 199, revised as of April 1, 2004, on page 207, in § 176.170, alphabetically add the following entry to the table in paragraph (b)(2):
§ 176.170
(b) * * *
(2) * * *
| List of substances | Limitations |
| --- | --- |
| * * * * * * * | |
| Butanedioic acid, sulfo-1,4-di-(C
-C
alkyl) ester, ammonium salt (also known as butanedioic acid, sulfo-1,4-diisodecyl ester, ammonium salt [CAS Reg. No. 144093-88-9]). | For use as a surface active agent in package coating inks at levels not to exceed 3 percent by weight of the coating ink. |
| * * * * * * * | |
In the same Title, revised as of the same date, on page 218, in § 176.180, alphabetically add the following entry to the table in paragraph (b)(2):
§ 176.180
(b) * * *
(2) * * *
| List of substances | Limitations |
| --- | --- |
| * * * * * * * | |
| Butanedioic acid, sulfo-1,4-di-(C
-C
alkyl) ester, ammonium salt (also known as butanedioic acid, sulfo-1,4-diisodecyl ester, ammonium salt [CAS Reg. No. 144093-88-9]). | For use as a surface active agent in package coating inks at levels not to exceed 3 percent by weight of the coating ink. |
| * * * * * * * | |