Yttrium Carbonate Hydrate, 38245-39-5

🧪 YTTRIUM(III) CARBONATE HYDRATE

1️⃣ Physical and Chemical Properties

• Chemical Name: Yttrium(III) Carbonate Hydrate

• Chemical Formula: Y₂(CO₃)₃·xH₂O (hydrated form)

• CAS Number: 38245-39-5

• EC Number: 609-958-8

• Molecular Weight: ~330–370 g/mol (varies with hydration level)

• Appearance: White crystalline powder

• Melting Point: Not well defined; decomposes to Y₂O₃ upon heating

• Solubility: Insoluble in water; soluble in acids

• Stability: Stable at room temperature

• Density: ~3.8 g/cm³

2️⃣ Detailed Applications

• Catalysis: Precursor for yttrium oxide (Y₂O₃), used as catalyst support

• Optical glass production: Controls UV transmission and refractive index

• Electronics: Additive in semiconductors and vacuum systems

• Coating technologies: Thin film deposition and sputtering target precursor

• Nanotechnology: Source material for Y₂O₃ nanoparticles

• Defense industry: Optical filters and laser systems

• Chemical industry: Intermediate for rare‑earth oxides and hydroxides

3️⃣ Synonyms, CAS, EC and Codes

4️⃣ Alternative / Substitute Products

• Yttrium Oxide (Y₂O₃): Directly used in ceramics and optics

• Yttrium Hydroxide (Y(OH)₃): Alternative precursor for Y₂O₃

• Lanthanum Carbonate (La₂(CO₃)₃): Similar rare‑earth carbonate properties

• Cerium Carbonate (Ce₂(CO₃)₃): Comparable optical and catalytic functions

5️⃣ Sectoral Compliance Table

6️⃣ Common Names

• Yttrium carbonate

• White carbonate powder

• Optical additive

• Yttrium salt

7️⃣ Production

• Starting material: Yttrium‑containing rare‑earth ores

• Process: Carbonate precipitation → Filtration → Drying → Hydrate formation

• Production grades: Technical and high‑purity grades

• Main producing countries: China, India, USA

• Commercial purity: 99% – 99.99%

8️⃣ Key Sectors and Processes

• Catalyst production: Precursor for Y₂O₃ catalysts

• Optical glass production: UV transmission and refractive index control

• Electronic vacuum systems: Surface additive and protective layer

• Defense optics: Precision laser filtering systems

• Nanotechnology: Y₂O₃ nanoparticle synthesis