Scandium Carbonate Hydrate, Scandium carbonate, 5809-49-4

🧪 SCANDIUM(III) CARBONATE HYDRATE

1️⃣ Physical and Chemical Properties

• Chemical Name: Scandium(III) Carbonate Hydrate

• Chemical Formula: Sc₂(CO₃)₃·xH₂O (hydrated form)

• CAS Number: 5809-49-4

• EC Number: Not widely listed

• Molecular Weight: ~288–366 g/mol (varies with hydration level; anhydrous ~287.95 g/mol)

• Appearance: White crystalline powder

• Melting Point: Not well defined; decomposes to Sc₂O₃ upon heating

• Solubility: Insoluble in water; soluble in acids

• Stability: Stable at room temperature

• Density: ~3.2–3.8 g/cm³ (depending on hydration state)

2️⃣ Detailed Applications

• Catalysis & Materials: Precursor for scandium oxide (Sc₂O₃), used in advanced ceramics and catalysts

• Aluminum Alloys: Via Sc₂O₃, contributes to Al‑Sc master alloys for aerospace and high‑strength applications

• Ceramics & Glass: Additive in advanced ceramics and specialty glass compositions

• Coating technologies: Thin film deposition and sputtering target precursor

• Nanotechnology: Source material for Sc₂O₃ nanoparticles

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

3️⃣ Synonyms, CAS, EC and Codes

4️⃣ Alternative / Substitute Products

• Scandium Oxide (Sc₂O₃): Directly used in ceramics, coatings, and alloys

• Scandium Hydroxide (Sc(OH)₃): Alternative precursor for Sc₂O₃

• Lanthanide Carbonates (La₂(CO₃)₃, Ce₂(CO₃)₃, Pr₂(CO₃)₃): Comparable rare‑earth carbonate intermediates

• Aluminum Oxide (Al₂O₃): Functional alternative in ceramics and coatings

5️⃣ Sectoral Compliance Table

6️⃣ Common Names

• Scandium carbonate

• White carbonate powder

• Scandium salt

• Oxide precursor carbonate

7️⃣ Production

• Starting material: Scandium‑containing solutions or ores

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

• Production grades: Technical and high‑purity (REO basis)

• Main producing countries: China, USA, EU suppliers

• Commercial purity: 98% – 99.999%

8️⃣ Key Sectors and Processes

• Sc₂O₃ production: Calcination to oxide form

• PVD processes: Oxide target preparation

• Alloy production: Al‑Sc master alloy chain via oxide route

• Ceramic labs: Phase diagram studies and additive optimization