# Listing of Color Additives Exempt From Certification; Reactive Blue 246 and Reactive Blue 247 Copolymers; Confirmation of Effective Date
> **Food and Drug Administration** · Final rule; confirmation of effective date. · Published 2013-06-25 · Effective 2013-05-02 · 78 FR 37962
## Document
- **Document number:** 2013-15111
- **Category:** fda-food
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 78 FR 37962
- **CFR reference:** 21 CFR 73
- **Publication date:** 2013-06-25
- **Effective date:** 2013-05-02
- **HHS docket:** Docket Nos. FDA-2011-C-0344 and FDA-2011-C-0463
## Abstract

The Food and Drug Administration (FDA or we) is confirming the effective date of May 2, 2013, for the final rule that published in the Federal Register of April 1, 2013 (78 FR 19413), and that amended the color additive regulations to provide for the safe use of additional copolymers of 1,4-bis[4-(2-methacryloxyethyl)phenylamino]anthraquinone (C.I. Reactive Blue 246) and copolymers of 1,4-bis[(2- hydroxyethyl)amino]-9,10-anthracenedione bis(2-methyl-2-propenoic)ester (C.I. Reactive Blue 247) as color additives in contact lenses.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/06/25/2013-15111/listing-of-color-additives-exempt-from-certification-reactive-blue-246-and-reactive-blue-247)
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