NSF award 2610279 · University of South Carolina at Columbia

Formation of Persistent Free Radicals in Sunscreens During Light Exposure

Final report due

28 November 2029

in 1,137 days · The award ends on 31 July 2029.

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Decide about an extension2 Apr 2029in 897 days
award ending 2029-07-31 · Research.gov
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Extension request16 Jun 2029in 972 days
award ending 2029-07-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Jul 2029in 1007 days
award ending 2029-07-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Nov 2029in 1137 days
award ending 2029-07-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Nov 2029in 1137 days
award ending 2029-07-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Nov 2029in 1137 days
award ending 2029-07-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 July 2029.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 November 2029.

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Award card

Award number: 2610279
Period of support: 15 Aug 2026 – 31 Jul 2029
Amount: $619,916
Awardee: University of South Carolina at Columbia, Columbia, SC
Program: Nanoscale Interactions Program
Directorate: ENG

Abstract

Sunscreens protect skin from sun damage. However, their ingredients can enter coastal waters through swimming, bathing, and wastewater release. Some ingredients can pose increasing chemical stress on coral reefs and other marine life. Two of the most widely used active ingredients in mineral sunscreens, zinc oxide and titanium dioxide, are tiny particles that, when exposed to sunlight, can generate reactive…

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