Cerium Hydroxide, Cerium Tetrahydroxide, Cerium Hydrate, 12014-56-1

🧪 CERIUM HYDRATE (CAS 12014-56-1)

1️⃣ Physical and Chemical Properties

• Chemical Name: Cerium(IV) Hydroxide / Cerium Tetrahydroxide

• Chemical Formula: Ce(OH)₄ (Molecular formula: CeH₄O₄)

• CAS Number: 12014-56-1

• EC Number: 234-599-7

• Molecular Weight: 208.14 g/mol

• Appearance: Yellow to pale brown powder or lumps

• Melting Point: Not well defined (decomposes upon heating)

• Boiling Point: ~100 °C at 760 mmHg (reported)

• Solubility: Insoluble in water; soluble in concentrated mineral acids

• Stability: Stable at room temperature under inert atmosphere

• Density: ~4.5–5 g/cm³ (approximate)

• Crystal Structure: Amorphous/hydroxide phase

2️⃣ Detailed Applications

• Catalysis: Precursor for cerium oxide (CeO₂) used in automotive catalytic converters and chemical catalysis

• Optics: Intermediate for rare‑earth optical materials and coatings

• Electronics: Used in polishing powders for semiconductors and glass substrates

• Coating technologies: Evaporation/sputtering target precursor for thin films

• Nanotechnology: Source material for cerium oxide nanoparticles

• Defense industry: Optical coatings and advanced ceramics

3️⃣ Synonyms, CAS, EC and Codes

4️⃣ Alternative / Substitute Products

• Cerium Oxide (CeO₂): Widely used in catalysis and optics

• Lanthanum Hydroxide (La(OH)₃): Similar rare‑earth hydroxide properties

• Praseodymium Hydroxide (Pr(OH)₃): Comparable precursor for rare‑earth oxides

• Zirconium Hydroxide (Zr(OH)₄): Alternative in coatings and ceramics

5️⃣ Sectoral Compliance Table

6️⃣ Common Names

• Cerium hydrate

• Cerium hydroxide

• Yellow cerium powder

• Rare‑earth hydroxide

7️⃣ Production

• Starting material: Cerium salts or cerium‑containing ores

• Process: Precipitation with hydroxide → Filtration → Drying

• Production grades: Technical and high‑purity grades

• Main producing countries: China, India, USA

• Commercial purity: 99% – 99.999%

8️⃣ Key Sectors and Processes

• Catalysis: Automotive catalytic converters, chemical catalysis

• Optical coatings: Thin films and rare‑earth glass additives

• Electronics: Polishing powders for semiconductors and glass

• Nanotechnology: Precursor for cerium oxide nanoparticles