Chemistry:Z-Cote

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Short description: Zinc oxide produced by BASF

Z-Cote is a commercial zinc oxide line[1] manufactured and owned by BASF.[2] Due to Z-Cote's photo-protective properties it is commonly used in personal care products and sunscreens. It is available in nano, non-nano, coated and uncoated forms.[3] Z-Cote is a derivative of zinc oxide which is Generally Recognized As Safe and Effective (GRASE) by the FDA as a nutrient,[4] cosmetic colour additive,[5][6] skin protection active ingredient[7] and other OTC products.[8] Manufactured zinc oxide, such as Z-Cote, is only recognised as GRASE by the FDA when it is compliant with the Good manufacturing practice (GMP) standard. The original Sunsmart and Submicro Encapsulation Technologies Z-Cote patent filed in 1991 for UV skin protection expired in 2015.[9]

History

Z-Cote was acquired from SunSmart in 1999 by BASF.[10][11] It has been used in sunscreen formulations since at least 1993 in microfine form.[12] The initial 1991 Z-Cote patent placed emphasis on broad-spectrum protection, especially UVA.[9] Only in 1993 did the FDA approve an alternative petrochemical sunscreen ingredient, avobenzone, that also provided protection against UVA.[13][14]

Environmental impact

Plants

Z-Cote was studied to evaluate hypothetical agricultural impacts if it were to contaminate irrigated water. In the study it was found that Z-Cote had a negligible impact on bean (Phaseolus vulgaris) pod production and increased root length and the concentration of more nutritional elements.[15]

Reef

Zinc oxide is compliant with Hawaii Act 104 banning non-reef safe petrochemicals.[16]

Zinc oxide producers

  • Croda International
  • BASF
  • Umicore

References

  1. ↑ "Zinc Oxide GCIMagazine.com". http://dir.gcimagazine.com/detail/inci.html?id=Zinc+Oxide. 
  2. ↑ Yin, Hong; Coleman, Victoria A.; Casey, Phil S.; Angel, Brad; Catchpoole, Heather J.; Waddington, Lynne; McCall, Maxine J. (2015-02-17). "A comparative study of the physical and chemical properties of nano-sized ZnO particles from multiple batches of three commercial products" (in en). Journal of Nanoparticle Research 17 (2): 96. doi:10.1007/s11051-014-2851-y. ISSN 1572-896X. https://doi.org/10.1007/s11051-014-2851-y. 
  3. ↑ "Z-COTE® Zinc Oxide - Formulation Concepts". 100 Park Avenue, Florham Park, NJ 07932, USA: BASF. 2019. https://carecreations.basf.us/files/pdf/2019_BASF_ZCote-Sunscreen_Brochure_6x4_LRes.pdf. 
  4. ↑ "CFR - Code of Federal Regulations Title 21 - Subchapter B". https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=182.8991. 
  5. ↑ "CFR - Code of Federal Regulations Title 21 - Subchapter A". https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=73.2991. 
  6. ↑ "CFR - Code of Federal Regulations Title 21 - Subchapter A". https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=73.1991&SearchTerm=zinc%20oxide. 
  7. ↑ "CFR - Code of Federal Regulations Title 21 - Subchapter D". https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=347.10&SearchTerm=zinc%20oxide. 
  8. ↑ "Federal Register :: Request Access". https://unblock.federalregister.gov/. 
  9. ↑ 9.0 9.1 Mitchnick, Mark A.; Garry T. Gwozdz & Fortunato J. Micale, "Composite UV sunblock compositions", US patent 5733531, published 1998-03-31, assigned to Sunsmart Inc.and Submicro Encapsulation Technologies Inc.
  10. ↑ "BASF Acquires Z-COTE Micro Zinc Oxide Ingredient From SunSmart". The Rose Sheet. 13 December 1999. https://pink.pharmaintelligence.informa.com/RS007462/BASF-Acquires-Z-COTE-Micro-Zinc-Oxide-Ingredient-From-SunSmart. 
  11. ↑ SEC. "Basf Akteingesellschaft /adr/ Form for initial registration of a class of securities of foreign private issuers pursuant to section 12(b) 20FR12B" (in en). https://sec.report/Document/0000950123-00-005428/. 
  12. ↑ Nearn, Malcolm R.; Sandra J. Redshaw & Graham Burgess, "Sunscreen compositions", US patent 5417961, published 1995-05-23, assigned to Colgate-Palmolive Company
  13. ↑ "27666 Federal Register / Vol. 64, No. 98 / Friday, May 21, 1999 /Rules and Regulations". May 21, 1999. https://www.govinfo.gov/content/pkg/FR-1999-05-21/pdf/99-12853.pdf. 
  14. ↑ Beasley, Donathan G.; Meyer, Thomas A. (2010-12-01). "Characterization of the UVA protection provided by avobenzone, zinc oxide, and titanium dioxide in broad-spectrum sunscreen products". American Journal of Clinical Dermatology 11 (6): 413–421. doi:10.2165/11537050-000000000-00000. ISSN 1179-1888. PMID 20806994. https://pubmed.ncbi.nlm.nih.gov/20806994/. 
  15. ↑ Medina-Velo, Illya A.; Barrios, Ana C.; Zuverza-Mena, Nubia; Hernandez-Viezcas, Jose A.; Chang, Chong Hyun; Ji, Zhaoxia; Zink, Jeffrey I.; Peralta-Videa, Jose R. et al. (2017-06-15). "Comparison of the effects of commercial coated and uncoated ZnO nanomaterials and Zn compounds in kidney bean (Phaseolus vulgaris) plants" (in en). Journal of Hazardous Materials 332: 214–222. doi:10.1016/j.jhazmat.2017.03.008. ISSN 0304-3894. PMID 28359954. 
  16. ↑ IGE, GOVERNOR DAVID Y.; CHAR, M.D. ELIZABETH A. (2021-02-17). "Testimony COMMENTING on SB0132 RELATING TO WATER POLLUTION SENATOR MIKE GABBARD, CHAIR SENATOR CLARENCE K. NISHIHARA, VICE CHAIR SENATE COMMITTEE ON AGRICULTURE & ENVIRONMENT". https://www.capitol.hawaii.gov/session2021/testimony/SB132_TESTIMONY_AEN_02-17-21_.PDF. 



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