Anhydrous Neodymium Chloride

Rare Earth Chlorides

Anhydrous Neodymium Chloride, chemically represented as NdCl₃ (a fully dehydrated inorganic compound distinct from hydrated forms like NdCl₃·6H₂O), is a high-value rare earth chloride critical for advanced material synthesis. Unlike its hydrated counterparts that contain crystalline water and are stable under ambient conditions, anhydrous NdCl₃ exists only when processed and stored under strict anhydrous environments—its core value lies in ultra-low moisture content (<0.1%), high ionic reactivity, and compatibility with anhydrous manufacturing processes. This distinguishes it from less reactive hydrated neodymium chloride (which hydrolyzes easily during high-temperature reactions) and insoluble rare earth compounds like neodymium oxide (Nd₂O₃) or fluoride (NdF₃). With purities ranging from 99.9% (high-purity grade) to 99.999% (ultra-high purity grade), and strict control over trace impurities (e.g., <5 ppb heavy metals, <3 ppb oxygen/carbon), it is indispensable in high-performance neodymium-iron-boron (NdFeB) magnet production, semiconductor doping, and advanced optoelectronic material synthesis.

Commercially, Anhydrous Neodymium Chloride is categorized by purity, particle size, and moisture content to meet specialized industrial needs. High-Purity Grade (purity 99.9%–99.99%, moisture<0.1%, particle size 100–200 mesh) is primarily used as a precursor for high-purity neodymium metal via metallothermic reduction—critical for manufacturing low-loss NdFeB magnets used in electric vehicle (EV) traction motors and wind turbine generators. Ultra-High Purity Grade (purity ≥99.999%, moisture <0.05%, particle size 200–300 mesh or nanoscale powder) targets semiconductor and optoelectronic industries: it serves as a dopant for conductive ceramics in 5G base station components and a raw material for neodymium-doped quantum dots (QDs) used in near-infrared (NIR) imaging. Unlike hydrated neodymium chloride (pale purple crystals), anhydrous NdCl₃ appears as off-white to light gray crystalline powder—its muted color (due to minimal water-induced electron transitions in Nd³⁺ ions) requires analytical verification (e.g., Karl Fischer titration for moisture, inductively coupled plasma mass spectrometry (ICP-MS) for purity) instead of visual identification. It is exclusively supplied in hermetically sealed containers (e.g., argon-filled stainless steel canisters or vacuum-packed HDPE bags) to prevent moisture absorption, as even 0.1% water content can trigger hydrolysis during storage or processing.

Physically, Anhydrous Neodymium Chloride exhibits traits tailored to its anhydrous nature and high-temperature applications. It has a molecular weight of 250.60 g/mol and a bulk density of ~3.60 g/cm³—significantly higher than the hexahydrate form (2.28 g/cm³) due to the absence of crystalline water. A defining physical property is its solubility in anhydrous polar solvents: it dissolves in anhydrous ethanol (≈8 g/100 mL at 20°C) and anhydrous tetrahydrofuran (THF, ≈5 g/100 mL), but is insoluble in non-polar solvents like hexane—enabling use in anhydrous organic synthesis and electrolyte preparation. Thermal stability is exceptional: it remains stable up to 700°C under inert atmosphere (nitrogen or argon), but hydrolyzes rapidly at temperatures above 150°C in the presence of moisture, forming neodymium oxychloride (NdOCl) and hydrogen chloride (HCl) gas. It exhibits extreme hygroscopicity—absorbing 5%–8% moisture within 30 minutes at 60% relative humidity, leading to rapid caking and hydrolysis. This requires strict moisture control during handling, including glovebox operations for ultra-high purity grades. Notably, its ionic conductivity in molten salt mixtures (e.g., with LiCl-KCl) is ~10 S/cm at 800°C—critical for electrolytic production of high-purity neodymium metal.

Chemically, Anhydrous Neodymium Chloride’s key feature is the high reactivity of Nd³⁺ ions and chloride anions in anhydrous environments. Unlike hydrated NdCl₃ (which dissociates in water), it undergoes direct metallothermic reduction with active metals (e.g., calcium, lithium) at 600–800°C to produce metallic neodymium: NdCl₃ + 3Li → Nd + 3LiCl. This reaction is the core step in manufacturing ultra-pure neodymium for high-performance magnets, as it avoids oxygen contamination from oxide-based reduction processes. It forms stable complexes with organic ligands (e.g., crown ethers, phosphine oxides) in anhydrous solvents, enabling selective separation of neodymium from other rare earths (e.g., praseodymium, dysprosium) for ultra-high purity purification. In molten salt electrolytes, it dissociates into Nd³⁺ and Cl⁻ ions, with Nd³⁺ being electrochemically reduced to neodymium metal at the cathode—this process is used to produce neodymium ingots with >99.999% purity. Unlike neodymium(IV) compounds (unstable), Nd³⁺ remains the only stable oxidation state in anhydrous conditions, ensuring consistent reactivity across processes. It reacts violently with water to release HCl gas and form hydrated NdCl₃, requiring strict water exclusion during handling.

The industrial production of Anhydrous Neodymium Chloride is a complex, moisture-controlled process, typically starting from high-purity neodymium oxide (Nd₂O₃) or hydrated neodymium chloride (NdCl₃·6H₂O) via dehydration and purification. The process involves five core steps. First, raw material pretreatment: High-purity Nd₂O₃ (purity ≥99.99%) is crushed to 200–300 mesh and dried at 300°C under vacuum to remove surface moisture. Alternatively, hydrated NdCl₃·6H₂O (purified via solvent extraction) is used as a starting material. Second, chlorination (for oxide feedstock): Nd₂O₃ is reacted with anhydrous chlorine gas (Cl₂) and carbon at 600–700°C in a quartz reactor: Nd₂O₃ + 3C + 3Cl₂ → 2NdCl₃ + 3CO. This step ensures complete conversion to anhydrous NdCl₃ while avoiding oxygen contamination. Third, dehydration (for hydrated feedstock): Hydrated NdCl₃·6H₂O is dehydrated in a rotary kiln under a stream of anhydrous hydrogen chloride (HCl) gas at 250–300°C—HCl suppresses hydrolysis by reacting with water to form H₂O vapor, which is removed via vacuum. Fourth, purification: The crude anhydrous NdCl₃ is sublimed at 800–900°C under vacuum (10⁻³ mbar) to separate it from high-boiling impurities (e.g., other Rare Earth Chlorides, heavy metal chlorides). Ultra-high purity grades undergo additional zone melting to reduce impurities to ppb levels. Fifth, packaging: The purified anhydrous NdCl₃ is cooled to<50°C in an argon-filled glovebox, then packaged into hermetically sealed containers (e.g., aluminum-laminated bags with desiccant or stainless steel canisters) to maintain moisture <0.05%.

Anhydrous Neodymium Chloride’s applications are driven by its anhydrous nature, high purity, and reactivity. In high-performance magnets, Ultra-High Purity Grade NdCl₃ is reduced to neodymium metal (≥99.999% purity) and alloyed with iron, boron, and dysprosium to produce NdFeB magnets with high coercivity (HcJ > 20 kOe)—critical for EV motors that require stability at high temperatures (150–200°C). In semiconductors, it is used as a dopant for gallium arsenide (GaAs) wafers: anhydrous NdCl₃ vapor is deposited onto GaAs surfaces via chemical vapor deposition (CVD), introducing Nd³⁺ ions to modify electrical conductivity for high-frequency devices. In optoelectronics, it is a precursor for neodymium-doped fiber lasers: anhydrous NdCl₃ is dissolved in anhydrous silica precursors, then drawn into fibers that emit NIR light (1064 nm) for industrial cutting and medical surgery. In laboratory research, it is used as a reference material for anhydrous rare earth chemistry and as a starting material for neodymium-based metal-organic frameworks (MOFs) with magnetic properties. Additionally, it is used in molten salt batteries as an electrolyte additive, improving ionic conductivity and thermal stability of LiCl-KCl-based electrolytes.

Safety-wise, Anhydrous Neodymium Chloride requires extreme care due to its hygroscopicity and reactivity with water. It is a corrosive substance: contact with skin or eyes causes chemical burns due to HCl release upon reaction with moisture; operators must wear acid-resistant gloves (neoprene), face shields, and lab coats. Inhalation of dust or HCl vapor (from accidental water contact) irritates the respiratory tract, requiring fume hoods and respiratory protection (N95 masks with acid gas cartridges). It reacts violently with water, releasing toxic HCl gas—storage and handling must occur in moisture-free environments (relative humidity<10%). 2="" 72="" it="" is="" non-flammable="" but="" may="" intensify="" fires="" by="" releasing="" gas="" when="" heated="" above="" c.="" storage="" should="" be="" in="" a="" cool="" and="" well-ventilated="" area="" hermetically="" sealed="" separated="" from="" organic="" materials.="" the="" shelf="" life="" years="" if="" once="" must="" used="" within="" hours="" to="" avoid="" moisture="" absorption.="" expired="" or="" contaminated="" material="" detected="" via="">0.1% or Cl₂ odor) must be disposed of as hazardous waste, following local regulations.

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

Key Features:

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

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

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

Chemical industry catalyst: Anhydrous neodymium chloride is an important component of catalysts for preparing neodymium-based styrene-butadiene rubber, rare earth isoprene rubber and other synthetic rubbers. It can form an efficient catalytic system with triethylaluminum and other auxiliary catalysts, and is used in the polymerization reactions of monomers such as butadiene and isoprene. In addition, it can also be used to modify titanium dioxide photocatalysts, enabling them to effectively decompose pollutants (such as phenols and dyes) in wastewater under visible light.

Batteries and energy materials: Anhydrous neodymium chloride is the main raw material for preparing metallic neodymium, and metallic neodymium is a key material for manufacturing high-performance NdFeB (neodymium iron boron) permanent magnets. These permanent magnets are widely used in modern energy technologies such as wind turbines and electric vehicle drive motors. It can also serve as the rare earth ion source for neodymium-doped fiber amplifiers and solid-state lasers (such as Nd:YAG lasers).

Corrosion inhibitor: Anhydrous neodymium chloride can be used as an environmentally friendly corrosion inhibitor for aluminum and aluminum alloys. By impregnating or electrolytically depositing it onto the metal surface to form an insoluble neodymium hydroxide protective film, it can significantly enhance the corrosion resistance of the material in harsh environments such as sodium chloride, and its effect is better than that of traditional chromate reagents with lower toxicity.

Chemical synthesis intermediates: As a crucial starting material, anhydrous neodymium chloride is widely used in the synthesis of other neodymium compounds, such as neodymium oxides, neodymium fluorides, and various neodymium salts. It is also a commonly used reagent for fluorescence labeling (used to label biological molecules such as DNA) and for studying absorption spectra.

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