Holmium Carbonate Hydrate, 38245-34-0

🧪 HOLMIUM(III) CARBONATE HYDRATE

1️⃣ Physical and Chemical Properties

• Chemical Name: Holmium(III) Carbonate Hydrate

• Chemical Formula: Ho₂(CO₃)₃·xH₂O (hydrated form)

• CAS Number: 38245-34-0

• EC Number: Not widely listed

• Molecular Weight: ~542 g/mol (anhydrous basis; varies with hydration)

• Appearance: White crystalline powder

• Melting Point: Not well defined; decomposes to Ho₂O₃ upon heating

• Solubility: Insoluble in water; soluble in acids

• Stability: Stable at room temperature

• Density: ~4.8 g/cm³

2️⃣ Detailed Applications

• Catalysis: Precursor for holmium oxide (Ho₂O₃), used in catalytic and ceramic applications

• Optical glass and lasers: Ho₂O₃ is used in specialty glass and laser systems; carbonate serves as precursor

• Electronics: Additive in semiconductors and vacuum systems

• Coating technologies: Thin film deposition and sputtering target precursor

• Nanotechnology: Source material for Ho₂O₃ 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

• Holmium Oxide (Ho₂O₃): Directly used in ceramics and optics

• Holmium Hydroxide (Ho(OH)₃): Alternative precursor for Ho₂O₃

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

• Terbium Carbonate (Tb₂(CO₃)₃): Alternative in phosphor and optical applications

5️⃣ Sectoral Compliance Table

6️⃣ Common Names

• Holmium carbonate

• White carbonate powder

• Optical additive

• Holmium salt

7️⃣ Production

• Starting material: Holmium‑containing rare‑earth ores or solutions

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

• 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 Ho₂O₃ catalysts

• Optical glass and laser production: UV/IR transmission and laser filtering control

• Electronic vacuum systems: Surface additive and protective layer

• Defense optics: Precision laser filtering systems

• Nanotechnology: Ho₂O₃ nanoparticle synthesis