Terbium Carbonate Hydrate, 100587-96-0

🧪 Terbium(III) carbonate hydrate

Physical and chemical properties

• Chemical name: Terbium(III) carbonate hydrate

• Chemical formula: Tb₂(CO₃)₃·xH₂O (hydrated form)

• CAS number: 100587-96-0

• EC number: 228-002-9

• Molecular weight: 497.88 g/mol (anhydrous basis; varies with hydration)

• Appearance: White powder; hygroscopic tendency reported

• Melting/decomposition: No sharp melting; decomposes to Tb₂O₃ upon heating

• Solubility: Insoluble in water; soluble in acids

• Stability: Stable at room temperature; handle in dry conditions due to hygroscopicity

Detailed applications

• Catalysis and materials: Precursor for terbium oxide (Tb₂O₃) used in ceramic, catalytic, and luminescent materials workflows.

• Optical glass and phosphors: Feedstock for Tb-containing oxides/phosphors; supports UV/IR transmission tuning and green emission systems after conversion to oxide.

• Electronics and vacuum processes: Intermediate for thin‑film targets via oxide route; compatible with sputtering workflows when converted to Tb₂O₃.

• Nanotechnology: Source for Tb₂O₃ nanoparticles through precipitation/calcination pathways.

• Chemical industry: Intermediate for rare‑earth oxides and hydroxides in multi‑step synthesis chains.

These uses derive from its role as a stable carbonate precursor that cleanly converts to Tb₂O₃, which is the functional ceramic/phosphor phase.

Synonyms, identifiers and codes

Sources: EC number and basic identifiers from supplier references; UN and HS reflect common practice for rare‑earth carbonates.

Safety and handling notes

• Classification: Irritation hazards listed (H319, H335, H315); NFPA 704: 0‑0‑1 (minimal health/flammability, slight reactivity)

• Precautions: Use gloves and eye protection; avoid dust formation; store dry and sealed due to hygroscopicity

• Water reactivity/solubility: Insoluble in water; process via acid dissolution if conversion is required

Alternative and substitute products

• Terbium oxide (Tb₂O₃): Direct use in ceramics, phosphors, and coatings.

• Terbium hydroxide (Tb(OH)₃): Alternative precursor convertible to oxide.

• Lanthanide carbonates (e.g., La₂(CO₃)₃, Pr₂(CO₃)₃, Nd₂(CO₃)₃): Comparable intermediates for oxide production in similar process chains.

Supplier data confirm carbonate hydrate as a practical precursor; selection depends on downstream oxide specifications and process route.

Production and specifications

• Starting material: Terbium‑containing rare‑earth solutions or salts.

• Process: Carbonate precipitation → filtration → drying → hydrate control.

• Grades and purity: Technical to high‑purity; suppliers list 99.9% typical for lab/industrial use.

• Typical listing: Molecular descriptors and research‑use notes provided by catalogs.