Neodymium Chloride

Rare Earth Chlorides

Neodymium Chloride, chemically represented as NdCl₃ and predominantly existing in hydrated forms such as the hexahydrate (NdCl₃·6H₂O) under ambient conditions (with anhydrous NdCl₃ obtainable only under strict anhydrous processing), is a crucial inorganic compound in the rare earth chloride family. Its core value stems from the stable +3 oxidation state of neodymium(III) ions and high aqueous solubility, which distinguishes it from less soluble rare earth compounds like neodymium oxide (Nd₂O₃) or neodymium fluoride (NdF₃). Unlike organic rare earth complexes that rely on ligand compatibility, Neodymium Chloride’s chloride anions (Cl⁻) ensure strong ionic conductivity in solutions and easy conversion to other neodymium compounds, making it a versatile intermediate in rare earth material synthesis. With purity ranging from 98% (technical grade) to 99.999% (ultra-high purity), it finds extensive applications in neodymium-iron-boron (NdFeB) permanent magnets, optical glass doping, catalyst preparation, and laboratory research.

Commercially, Neodymium Chloride is classified based on hydration state, purity, and particle size to cater to diverse industrial and research needs. Technical Grade Neodymium Chloride, with a purity of 98.0%–99.0%, is typically supplied as hexahydrate crystals or granular powder (100–200 mesh). It prioritizes cost-effectiveness and is widely used as a raw material for NdFeB magnet production—where it is reduced to metallic neodymium via electrolysis or metallothermic reduction—and as a flux in aluminum alloy casting to remove oxide inclusions. Reagent Grade Neodymium Chloride, with a purity of ≥99.5% and controlled hydration (±0.5% moisture), is available as fine hexahydrate powder (200–300 mesh) or anhydrous pellets. It meets strict laboratory standards, making it suitable for analytical chemistry (such as neodymium ion detection and coordination studies), small-scale optical material synthesis (doping of phosphate glass for laser applications), and catalyst preparation (as a precursor for neodymium-based olefin polymerization catalysts). High-Purity Grade Neodymium Chloride, with a purity of ≥99.99%, is offered as low-hydrate (dihydrate NdCl₃·2H₂O) or anhydrous powder (200–300 mesh). It targets high-performance magnet and electronics industries, serving as a precursor for high-purity neodymium metal and a dopant for conductive ceramics—where trace impurities (e.g.,<10 ppb heavy metals like Fe, Cu, Pb; <5 ppb other rare earths like Pr, La) are strictly controlled to avoid magnetic or electrical performance degradation. Ultra-High Purity Grade Neodymium Chloride, with a purity of ≥99.999%, is a specialized product available as anhydrous powder or high-purity solution. Its moisture content is tightly regulated (<0.1%), and it is used in advanced optoelectronics (such as neodymium-doped fiber lasers) and quantum dot synthesis, where even minute impurities can disrupt luminescent or magnetic properties. At standard temperature and pressure, hexahydrate Neodymium Chloride appears as pale purple to lavender crystalline powder or needle-like crystals—its distinctive color (a hallmark of Nd³⁺ ions) allows easy visual identification. The hydration state can be confirmed via Thermal Gravimetric Analysis (TGA): the hexahydrate loses crystalline water in stages, with complete conversion to anhydrous NdCl₃ above 250°C (under inert atmosphere to prevent hydrolysis).

Physically, Neodymium Chloride exhibits properties tailored to its ionic nature and application scenarios. The hexahydrate (NdCl₃·6H₂O) has a molecular weight of 358.59 g/mol and a bulk density of approximately 2.28 g/cm³, while the anhydrous form (molecular weight 250.60 g/mol) has a higher bulk density of ~3.60 g/cm³. A key physical characteristic is its exceptional aqueous solubility: it dissolves in water at ~97 g/100 mL at 20°C, forming clear purple solutions, and is also soluble in polar organic solvents like ethanol (≈15 g/100 mL at 20°C) and methanol—far more soluble than neodymium oxide (insoluble in water) or neodymium fluoride (≈0.00003 g/100 mL in water). This high solubility enables precise control of neodymium ion concentration in solution-based processes, such as sol-gel synthesis of neodymium-doped materials. A 20% aqueous solution of Neodymium Chloride has a viscosity of 3–5 cP at 20°C and a slightly acidic pH (5.0–6.0), due to minimal hydrolysis of Nd³⁺ ions, which avoids corrosion of most metal processing equipment. Thermal stability varies with hydration: the hexahydrate begins to lose water at 50–80°C, forming lower hydrates (e.g., tetrahydrate, dihydrate) before converting to anhydrous NdCl₃; anhydrous Neodymium Chloride is stable up to 700°C but hydrolyzes to neodymium oxychloride (NdOCl) in the presence of moisture at high temperatures. It exhibits high hygroscopicity, absorbing approximately 2%–3% moisture at 60% relative humidity, which leads to caking if not stored properly—hence the need for sealed, moisture-proof packaging.

Chemically, Neodymium Chloride’s behavior is defined by the reactivity of Nd³⁺ ions and chloride anions. In aqueous solutions, it dissociates completely into Nd³⁺ and Cl⁻ ions, with Nd³⁺ forming stable hydrated complexes (e.g., [Nd(H₂O)₉]³⁺) that exhibit weak Lewis acid properties. This acidity allows it to catalyze organic reactions such as esterification and hydrolysis, though it is less commonly used as a catalyst compared to stronger Lewis acids like aluminum chloride. When reacted with strong bases (e.g., sodium hydroxide or ammonia), it forms insoluble neodymium hydroxide (Nd(OH)₃) precipitates, following the reaction: NdCl₃ + 3NaOH → Nd(OH)₃↓ + 3NaCl. This reaction is widely used in analytical chemistry to separate neodymium from other metal ions and in the purification of neodymium compounds. Anhydrous Neodymium Chloride is highly reactive with metals like calcium or lithium, undergoing metallothermic reduction to produce metallic neodymium—a key step in NdFeB magnet manufacturing: NdCl₃ + 3Li → Nd + 3LiCl. Unlike neodymium(IV) compounds (which are unstable and rare), Nd³⁺ is the only stable oxidation state of neodymium under normal conditions, ensuring consistent chemical behavior across applications. Chloride anions also enable easy conversion to other neodymium salts: reacting Neodymium Chloride with sodium carbonate produces neodymium carbonate (Nd₂(CO₃)₃), while reaction with sulfuric acid yields neodymium sulfate (Nd₂(SO₄)₃).

The industrial production of Neodymium Chloride primarily uses neodymium-rich raw materials such as neodymium oxide (Nd₂O₃) or mixed rare earth concentrates (e.g., bastnasite, monazite) via acid dissolution and purification processes, involving four core steps. First, raw material pretreatment: if using Nd₂O₃ (purity ≥99.0%), it is crushed to 100–200 mesh to increase surface area; if using mixed rare earth concentrates, they are first roasted to remove organic impurities and then leached with hydrochloric acid to obtain a mixed rare earth chloride solution. Second, purification: the neodymium-containing solution undergoes solvent extraction using organophosphorus extractants (e.g., 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, P507) to separate neodymium from other rare earths (e.g., lanthanum, cerium, praseodymium) and heavy metals. This step ensures the neodymium purity meets the target grade, with high-purity grades requiring multiple extraction stages to reduce impurities to ppb levels. Third, crystallization or anhydration: for hydrated Neodymium Chloride, the purified solution is concentrated under reduced pressure at 60–80°C to a 50%–60% concentration, then cooled to 0–10°C to induce hexahydrate crystallization; the crystals are filtered and washed with cold dilute hydrochloric acid to remove residual impurities. For anhydrous Neodymium Chloride, the hydrated crystals are dried under vacuum at 250–300°C in the presence of a dehydrating agent (e.g., thionyl chloride) to prevent hydrolysis, resulting in anhydrous powder. Fourth, finishing: the dried product is crushed and screened to the target particle size (100–300 mesh), and high-purity/ultra-high purity grades are packaged in nitrogen-filled, moisture-proof containers (e.g., HDPE or aluminum-laminated bags) to maintain stability.

Neodymium Chloride’s applications are driven by its high solubility, stable Nd³⁺ valence, and easy convertibility. In the permanent magnet industry, Technical Grade and High-Purity Grade Neodymium Chloride are core raw materials for NdFeB magnets: after reduction to metallic neodymium, it is alloyed with iron and boron, then sintered to form magnets with exceptional magnetic strength—used in electric vehicle motors, wind turbine generators, and consumer electronics (e.g., smartphone speakers). In optics, Reagent Grade and High-Purity Grade Neodymium Chloride is a key dopant for optical glass and fibers: doping into silicate or phosphate glass imparts selective absorption and emission in the near-infrared range (1064 nm), making the glass suitable for solid-state lasers (used in laser cutting, medical surgery, and telecommunications). In catalysis, Reagent Grade Neodymium Chloride is a precursor for Ziegler-Natta catalysts, which are used in the polymerization of olefins (e.g., polyethylene, polypropylene) to produce high-density polymers with controlled molecular weight distribution. In laboratory research, it is used as a reference material for neodymium ion analysis and as a starting material for the synthesis of neodymium-based nanomaterials (e.g., neodymium oxide nanoparticles for magnetic resonance imaging contrast agents). Additionally, in the textile industry, it is occasionally used as a mordant for natural dyes, improving color fastness by forming complexes with dye molecules and fabric fibers.

Safety-wise, Neodymium Chloride has low acute toxicity but requires careful handling due to its hygroscopicity and potential irritant properties. Its powder and aqueous solutions can cause mild skin and eye irritation: direct contact may result in dryness or redness, so operators should wear nitrile gloves and safety goggles when handling. Inhalation of fine powder can irritate the respiratory tract, leading to coughing or nasal congestion, so proper ventilation (e.g., fume hoods for powder handling) and dust masks (N95 or equivalent) are recommended. It is non-flammable, and thermal decomposition (above 700°C) releases only hydrogen chloride gas (in the presence of moisture) and neodymium oxide—no explosive or highly toxic byproducts. Storage should be in a cool (15–25°C), dry (relative humidity<40%) area="" in="" moisture-proof="" containers="" hdpe="" bottles="" with="" desiccant="" .="" hydrated="" grades="" should="" be="" protected="" from="" excessive="" heat="">50°C) to prevent premature dehydration, while anhydrous grades must be stored under inert atmosphere (nitrogen or argon) to avoid hydrolysis. The shelf life of hydrated Neodymium Chloride is 1–2 years under proper storage, while anhydrous grades have a shelf life of 2–3 years. Expired products may show increased moisture content (detected via TGA), reduced solubility, or formation of insoluble hydrolysis products (e.g., NdOCl), and should be tested for purity and reactivity before use.

Descriptive:  WNX employs advanced automated production technology and uses high-quality raw materials to produce high-quality Neodymium Chloride.

Key Features:

High Purity:Neodymium Chloride contains no impurities from rare earth elements (such as iron, calcium, sodium), and the impurity content is low.

Good Solubility:Neodymium Chloride can dissolve rapidly in water and strong acids.

Consistency: The strict batch management in the production ofNeodymium Chloride ensures stable quality for industrial large-scale production.

Chemical industry catalyst: Neodymium chloride is an important component of catalytic cracking (FCC) catalysts used in petrochemicals, helping to enhance the efficiency and quality of fuel production. It can also be used as a component of Ziegler-Natta type catalysts, combined with organic metal reagents (such as triethylaluminum), to catalyze the polymerization reactions of monomers like butadiene and isoprene, producing synthetic rubber (such as polybutadiene rubber).

Phosphorus remover for ponds: Due to its chemical properties, neodymium chloride can be used in water treatment to precipitate phosphates, helping to address the problem of water eutrophication.

Batteries and energy materials: Neodymium chloride is an important precursor for preparing metallic neodymium, and metallic neodymium is a key raw material for manufacturing high-performance NdFeB permanent magnets. These permanent magnets are widely used in modern energy technologies such as wind turbines, electric vehicle drive motors, and hard disk drives.

Chemical synthesis intermediates: Neodymium chloride is a crucial intermediate for synthesizing other neodymium compounds (such as neodymium oxides, neodymium fluorides, etc.). It is also the main starting material for preparing high-purity metallic neodymium through molten salt electrolysis. Additionally, neodymium ions (Nd³⁺) can be used as a spectroscopic probe in scientific research to study the ionic coordination behavior in solutions.

1.Neutral labels/packaging (jumbo bag of 1.000kg each net),Two bags per pallet.

2.Vacuum-sealed, then wrapped in air cushion bags, and finally packed into iron drums.

Drum: Steel drums (open-top, 45L capacity, dimensions: φ365mm × 460mm / inner diameter × outer height).

Weight per Drum: 50 kg

Palletization: 18 drums per pallet (total 900 kg/pallet).

Transport Class: Maritime transportation / Air transportation

Custom packaging available upon request