Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

FERROUS AMMONIUM SULFATE.

Avoid CAS 10045-89-3 / ANTIMICROBIAL

Ferrous Ammonium Sulfate, also known as Mohr's salt, is a synthetic iron compound. While it serves as a source of ferrous ions (Fe2+), its primary functional classification in cosmetics is as a pesticide, with no identified skin benefits.

Summary

Pesticide (in cosmetic context, functionally classified)

Science

Mechanism of Action

This compound acts as a reducing agent by donating electrons. Despite its reducing potential, a specific mechanism of action directly related to beneficial effects on skin, or how it might contribute to general skincare, has not been identified in scientific literature. Its functional classification in cosmetics is as a pesticide.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

Ferrous Ammonium Sulfate lacks identified skin benefits, and its primary cosmetic classification is as a pesticide, making it unsuitable for inclusion in skincare formulations focused on skin health.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

In its crystalline form, Ferrous Ammonium Sulfate exhibits high stability against oxidation, allowing for extended storage. However, in solution, it undergoes slow oxidation when exposed to air. This oxidation process is notably inhibited in acidic environments, with the addition of sulfuric acid being a common practice to minimize conversion to ferric iron. While its solution typically presents a weak basic pH range of 9.5 to 11.4, oxidation accelerates significantly at higher pH levels. Optimal storage conditions involve a cool, dry, well-sealed container, away from strong oxidizing agents, acids, bases, and sources of extreme heat or ignition.

Conflicts

  • oxidizing agents (e.g., perchlorates, peroxides, permanganates, chlorates, nitrates, chlorine, bromine, fluorine)
  • strong acids (e.g., hydrochloric, sulfuric, nitric)
  • strong bases
  • tetranitromethane
  • ammonium perchlorate
  • mercury dinitrate
  • soluble carbonates (in neutral solution)
  • phosphates (in neutral solution)
  • oxalates (in neutral solution)
  • ethanol

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk High

Ferrous Ammonium Sulfate is categorized as a dangerous substance by the New Jersey Department of Health due to its potential to cause skin and eye irritation. Global Harmonized System (GHS) classifications highlight significant risks, including skin irritation (H315) and serious eye irritation (H319). Safety Data Sheets (SDS) further detail that while it may cause mild skin irritation, solutions can lead to severe skin burns and serious eye damage. The Cosmetic Ingredient Review (CIR) Expert Panel, during a 2014 assessment of inorganic sulfates, noted its function solely as a pesticide in cosmetics, without concluding on its safety for general topical application.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

This ingredient lacks identified skin benefits, is classified as a pesticide in cosmetics, and poses a high risk of skin irritation and burns, rendering it unsuitable for skincare.

Related

Similar Ingredients

Finding similar ingredients…