Description

Ferrihydrite is a poorly crystalline, highly reactive nanoscale iron oxyhydroxide mineral. Its unique structure and high surface area make it a critical material for advanced adsorption and catalytic processes. This product is essential for researchers and industrial engineers in environmental remediation, geochemistry, and materials science.

Application

• Environmental Remediation: As a highly effective adsorbent for removing heavy metals (e.g., arsenic, chromium, lead) and phosphate from contaminated water and soil.
• Catalysis & Chemical Synthesis: Serving as a precursor or active catalyst support in Fenton-like reactions and other oxidation processes for wastewater treatment.
• Soil Science & Geochemistry: Used as a model compound to study iron cycling, nutrient bioavailability, and contaminant fate in natural systems.
• Biomedical Research: Investigated for its role in iron metabolism and as a potential nano-carrier for drug delivery and imaging applications.
• Advanced Materials: Acting as a precursor for the synthesis of more crystalline iron oxides like hematite or magnetite for electronic and magnetic applications.
• Corrosion Science: Studied as a key component of rust layers, helping to understand and mitigate corrosion processes in ferrous alloys.

Basic Information

Product Name	Ferrihydrite
CAS No.	39473-89-7
Molecular Formula	Fe5HO8·4H2O (approximate)
Molecular Weight	~ 490 g/mol (approximate)
Synonyms	Hydrous Ferric Oxide; Iron(III) Oxide Hydroxide, Hydrated; FeOOH·xH2O; 2-line Ferrihydrite; 6-line Ferrihydrite; Amorphous Iron Oxide; Ferric Oxyhydroxide
EINECS	Contact for details

Quality Control

Our Ferrihydrite is produced under controlled conditions to ensure batch-to-batch consistency and high reactivity. Each lot undergoes rigorous quality testing, including analysis of iron content, crystallinity (by XRD), surface area (BET), and adsorption capacity. Certificates of Analysis (COA) detailing these parameters are available upon request to support your research and quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store in a cool, dry place at room temperature (15-25°C). For long-term stability, consider storage under an inert atmosphere to minimize oxidation and preserve surface reactivity.

Specification

Item	Specification
Appearance	Orange-brown to reddish-brown powder
Identification (XRD)	Characteristic 2-line or 6-line pattern
Assay (as Fe)	≥ 50 %
Surface Area (BET)	200 - 400 m²/g
Primary Particle Size	2 - 6 nm
Loss on Drying	≤ 15 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.