Yttrium chloride hexahydrate

Yttrium chloride hexahydrate (CAS 10025-94-2), formally yttrium(III) chloride hexahydrate (YCl₃·6H₂O), is a water-soluble rare earth salt; the primary water-soluble yttrium source.

Where is Yttrium chloride hexahydrate used?

• Electronics and solar PV: precursor for phosphor synthesis, including YAG:Ce for LED packages and yttrium-aluminium garnet laser media
• Microwave and superconductor components: starting material for yttrium iron garnet (YIG) filters and solution-phase precursor to YBCO coatings by chemical solution deposition
• Coatings, adhesives, sealants and elastomers: sol-gel formulations needing a readily soluble, high-purity yttrium source
• Barrier and corrosion-resistant coatings: surface modification and wetting benefits at the precursor stage
• Mining and metallurgy: intermediate for metallic yttrium and conversion to other yttrium salts or oxides
• Fine chemicals: Lewis acid catalyst in ring-opening reactions, typically at modest scale
• Pharma and healthcare: synthesis building block for radiopharmaceutical chelate complexes and organoyttrium intermediates.

Good to know: Anhydrous yttrium chloride (CAS 10361-92-9) is a distinct product, argon-packed against moisture and preferred for electrolysis and strictly anhydrous work; specify separately when moisture-free conditions are critical. REACH-registered in the 10–100 t/a band; CLP Warning signal word, consult the current safety data sheet.

Commercial specifications

• Purity grades 3N to 5N on a rare earth oxide basis
• Y₂O₃/TREO typically ≥ 99.9 %
• TREO content of the salt in the region of 44–45 %
• 1–5 kg laboratory jars or 25 kg fibre drums with double polyethylene liner