Discontinued (Discontinued) DY6646 Dysprosium(III) Acetate Hydrate Powder CAS No. 15280-55-4

Dysprosium(III) Acetate Hydrate Powder ((CH3CO2)3Dy · 4H2O) Description

Dysprosium(III) Acetate Hydrate Powder ((CH₃CO₂)₃Dy · 4H₂O) is a hydrated rare earth compound composed of dysprosium ions (Dy³⁺), acetate ligands (CH₃COO⁻), and four water molecules in its crystalline structure. It typically appears as a white to pale yellow crystalline powder with moderate hygroscopicity, requiring storage in sealed, dry conditions (humidity <40%, temperature <25°C) to prevent moisture absorption. The compound exhibits high solubility in polar solvents such as water, ethanol, and dimethylformamide (DMF), but limited solubility in nonpolar solvents like ether or toluene. Its density ranges between 1.6-1.8 g/cm³, and thermal analysis reveals a two-stage decomposition process: dehydration occurs at 80-120°C, releasing bound water molecules, followed by decomposition of the acetate ligands at 250-350°C to yield dysprosium oxide (Dy₂O₃), carbon dioxide, and water. This controlled thermal behavior makes it a versatile precursor for synthesizing high-purity Dy₂O₃, a critical material in advanced technologies.

Chemically, Dysprosium(III) Acetate Hydrate reacts with strong acids to release Dy³⁺ ions and acetic acid, while in alkaline environments, it may form dysprosium hydroxide precipitates. The Dy³⁺ ion remains stable under standard conditions but can undergo rare reduction to Dy²⁺ under extreme reducing environments. Its hygroscopic nature necessitates careful handling to avoid clumping or unintended hydrolysis. 

Technical specifications vary by grade, with industrial-grade purity (≥99%) and high-purity (≥99.9%) options available. Particle sizes can be tailored from micron-scale (1-50 μm) to nanoscale (50-200 nm) depending on synthesis methods, such as coprecipitation or solvothermal routes. Characterization techniques like X-ray diffraction (XRD), thermogravimetric analysis (TGA), and inductively coupled plasma optical emission spectroscopy (ICP-OES) ensure quality control by verifying crystal structure, decomposition profiles, and elemental composition.

Safety protocols emphasize minimizing dust inhalation and skin contact, requiring protective gear (gloves, masks) during handling. Waste disposal follows regulations for rare earth compounds to mitigate environmental impact. Overall, Dysprosium(III) Acetate Hydrate’s solubility, thermal decomposition controllability, and multifunctional reactivity position it as a critical material in cutting-edge industrial and research applications.

Dysprosium(III) Acetate Hydrate Powder ((CH3CO2)3Dy · 4H2O) Applications

In magnetic materials, it serves as a precursor for dysprosium-doped neodymium-iron-boron (NdFeB) magnets, enhancing coercivity and thermal stability for high-performance motors and renewable energy systems. In catalysis, it is used to prepare dysprosium oxide-based catalysts for methane reforming or selective oxidation reactions. Its luminescent properties enable applications in phosphor materials, where Dy³⁺ ions act as activators in LEDs and display technologies. Additionally, dysprosium’s neutron absorption capability makes it valuable in nuclear industries for control rod materials.

Dysprosium(III) Acetate Hydrate Powder ((CH3CO2)3Dy · 4H2O) Packaging

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

Packaging: Carton, Wooden Box, or Customized.

Kindly review the packaging details provided for your reference.

Manufacturing Process

1.       Testing Method

(1)    Chemical Composition Analysis - Verified using techniques such as GDMS or XRF to ensure compliance with purity requirements.

(2)    Mechanical Properties Testing - Includes tensile strength, yield strength, and elongation tests to assess material performance.

(3)    Dimensional Inspection - Measures thickness, width, and length to ensure adherence to specified tolerances.

(4)    Surface Quality Inspection - Checks for defects such as scratches, cracks, or inclusions through visual and ultrasonic examination.

(5)    Hardness Testing - Determines material hardness to confirm uniformity and mechanical reliability.

Please refer to the SAM testing procedures for detailed information.

Dysprosium(III) Acetate Hydrate Powder ((CH3CO2)3Dy · 4H2O) FAQs

Q1. What are the main uses?

Mainly used in magnetic materials, catalysts, optical coatings, and the nuclear industry, and also used in rare earth wastewater treatment.

Q2. How to store?

It needs to be sealed and stored in a cool and dry environment (temperature <25°C, humidity <40%), avoiding moisture absorption and light exposure.

Q3. Safety precautions?

Wear protective gloves, goggles, and an N95 mask when handling to avoid inhaling dust or contact with skin. In case of contact, rinse immediately with water

Performance Comparison Table with Competitive Products

Related Information

1.       Common Preparation Methods

The preparation of dysprosium(III) acetate hydrate involves several advanced methods tailored to achieve specific structural or functional properties. A widely used approach is the coprecipitation method, where aqueous dysprosium chloride (DyCl₃) is reacted with sodium acetate (CH₃COONa) under controlled pH conditions (typically pH 5-6) to form a crystalline precipitate. The mixture is stirred at 60-80°C to enhance reaction kinetics and crystallinity, followed by filtration, thorough washing with deionized water to remove residual ions, and drying at 80-100°C to yield the final hydrated product. Precise pH control and temperature optimization are critical to ensuring high purity and uniform particle morphology.

For applications requiring nanoscale particles with narrow size distribution, the solvothermal method is employed. Dysprosium nitrate (Dy(NO₃)₃) and acetic acid are dissolved in a mixed solvent of ethylene glycol and water, sealed in an autoclave, and heated to 150-200°C for 12-24 hours. The high-pressure, high-temperature environment promotes controlled crystal growth, resulting in nanoparticles (50-200 nm) ideal for optical or electronic applications. This method allows precise tuning of particle size and surface properties by adjusting solvent ratios, reaction time, and temperature gradients.

To enhance functionality for specialized uses like heavy metal adsorption, supported composite synthesis is adopted. For example, silica powder or activated carbon is impregnated with a dysprosium salt solution, followed by UV-induced grafting of polyacrylic acid to create a functionalized surface. The composite undergoes thermal treatment to stabilize the dysprosium acetate layer, significantly improving adsorption capacity (e.g., up to 278.49 mg/g for Dy³⁺ recovery in wastewater). This method combines the high surface area of the support with the selective binding properties of dysprosium, enabling efficient environmental remediation.

Key parameters influencing synthesis outcomes include precursor concentration, pH, reaction duration, and post-treatment conditions (e.g., calcination temperature for composite activation). Characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) are essential for verifying phase purity, morphology, and thermal decomposition behavior. Industrial-scale production often prioritizes coprecipitation for its cost-effectiveness and scalability, while solvothermal or composite methods cater to niche applications demanding tailored performance. By adjusting synthesis variables, the material’s properties—such as solubility, thermal stability, and reactivity—can be optimized for diverse applications in magnetics, catalysis, and environmental engineering.