Caprylhydroxamic acid

Caprylhydroxamic acid

Learn all about caprylhydroxamic acid, including how it's made, and why Puracy uses caprylhydroxamic acid in our products.
  • Derived from: coconut
  • Pronunciation: (Kaprilˈhī-drō zamic acid)
  • Type: Naturally-derived
  • Other names: octanohydroxamic acid

What Is Caprylhydroxamic acid?

Caprylhydroxamic acid, also called octanohydroxamic acid, is a white or tan solid derived from coconut.[1,2] Coconuts grow on the cocos nucifera, or coconut palm tree, around the world in lowland tropical and subtropical areas.[3,4] Widely cultivated, healthy coconut palms produce 50 nuts per year, and the tree can be used to produce everything from food and drink to fibers, building materials, and natural ingredients.[5,6]

What Does Caprylhydroxamic acid Do in Our products?

Caprylhydroxamic acid is a preservative that ensures products stay fresh while on the shelf and in your home. The ingredient is commonly found in conditioner, shampoo, and other items.[7]

Why Puracy Uses Caprylhydroxamic acid

We use caprylhydroxamic acid in several of our products as a biodegradable preservative that is a better alternative to parabens, isothiazolinones, and formaldehyde.[9] Whole Foods has deemed the ingredient acceptable in its body care quality standards, and research shows the ingredient is not a strong skin irritant or sensitizer.[10,11, 12]

How Caprylhydroxamic acid Is Made

Caprylhydroxamic acid production starts by reacting hydroxylamine hydrochloride with an alcohol solution, N-octoate, and 4-Dimethyl Aminopyridine. The mixture is heated, then cooled, filtered and crystallized.[8]


[1] U.S. National Library of Medicine
[2] Cosmetic Ingredient Review
[3] Purdue University
[5] University of Hawaii at Manoa College of Tropical Agriculture & Human Resources
[6] U.S. National Plant Germplasm System
[7] Environmental Working Group
[8] "Process for preparing caprylhydroxamic acid," Google Patents
[10] Whole Foods Market
[11] Clinical Research Laboratories, Inc. (2008) Notified Chemical: Repeated Insult Patch Test (Study Number CRL16108) for Inolex Chemical Co., Philadelphia, PA 19148, USA.
[12] MB research Laboratories (2010) Notified Chemical: MatTek EpiOcular MTT Viability Assay (Research Project Number MB 10-18732.19) for Inolex Chemical Co., Philadelphia, PA 19148, USA.

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