Basic Information

Name: Octylhydroxamic Acid

CAS Number: 7377-03-9

Molecular Formula: C₈H₁₇NO₂

Molecular Weight: 159.23

Category: Preservation booster / Chelating agent

Appearance: White to off-white crystalline powder

Product Overview

Octyl Hydroxamic Acid is a mild and efficient multifunctional ingredient widely used in modern cosmetic formulations.It acts as a preservation booster and metal ion chelating agent, helping improve overall antimicrobial protection without relying on traditional parabens or formaldehyde releasers.

It exhibits strong chelating ability toward metal ions such as Fe³⁺ and Cu²⁺, stabilizing formulations and preventing oxidation, discoloration, and microbial growth.Due to its low irritation profile, it is well-suited for sensitive skin, baby care products, and “preservative-free” or “low-preservative” concepts.

Typical Properties

Functions in Cosmetics

1) Preservation Booster

Enhances the efficacy of many common preservatives, including:

• 1,2-Hexanediol

• Caprylyl glycol

• Phenethyl alcohol

• Ethylhexylglycerin

Allows formulators to reduce preservative load while achieving strong protection.

2) Chelating Agent

Effectively binds metal ions, reducing oxidation, discoloration, and instability caused by trace metals.

3) Mild & Skin-Friendly

Low irritation and suitable for formulations designed for sensitive skin or daily-use products.

Application Areas

Suitable for a wide range of cosmetics and personal care formulations:

• Facial creams and lotions

• Serums and essences

• Cleansers and gels

• Sunscreens

• Shampoo, conditioner, hair treatments

• Baby skincare products

• Wet wipes and sheet masks

Packaging & Storage

• Packaging: 1 kg / 5 kg / 25 kg

• Shelf Life: 24 months (unopened)

• Storage Conditions:

• Cool, dry place

• Keep container tightly closed

• Protect from moisture and direct sunlight

FAQ

1. Is Octyl Hydroxamic Acid safe for skin?
Yes. It is mild, non-irritating, and does not release formaldehyde or parabens.

2. Can it replace preservatives completely?
It is a preservation booster and performs best when combined with other preservatives.

3. Is it suitable for baby and sensitive skin products?
Yes, it is well-tolerated and commonly used in gentle formulas.

4. Is it compatible with most cosmetic systems?
Yes, it works well in emulsions, gels, surfactant systems, and anhydrous products.

5. Can you provide COA/MSDS?
Yes, COA, MSDS, and technical data sheets are available upon request.