Cerium Carbonate｜High-Purity Industrial-Grade Rare Earth Carbonate-Baotou Mingxin Technology Co., Ltd.

Cerium Carbonate｜Core Precursor Material of Light Rare Earths High Purity Industrial Rare Earth Carbonate

CAS No.：54451-25-1｜Molecular Formula：Ce₂(CO₃)₃·xH₂O｜Molecular Weight：478.27 (Hydrated)

1. Product Introduction

Cerium Carbonate is a core basic raw material of cerium-based light rare earths, which is a mainstream hydrated rare earth carbonate powder material in the industry. The product appears as white to pale yellow crystalline powder. High-purity grades are pure white, odorless, non-caking with uniform and stable appearance. It features stable chemical properties, insoluble in water and ethanol at room temperature, but easily soluble in dilute inorganic acids such as hydrochloric acid and nitric acid, releasing carbon dioxide. With excellent thermal decomposition performance, it can be accurately converted into high-activity cerium dioxide powder after high-temperature calcination.

As a key intermediate precursor for rare earth hydrometallurgy, cerium carbonate features controllable impurities, high chemical activity and strong batch stability. It is the core raw material for large-scale preparation of cerium dioxide, cerium nitrate, cerium chloride and other cerium compounds. Widely applied in glass deep processing, precision optical polishing, environmental catalysis, electronic ceramics, new energy materials, industrial water treatment and other high-end industrial fields, it is an indispensable basic functional material in the entire rare earth industrial chain.

2. Physical and Chemical Indexes

Item	Technical Parameters
Appearance	White to pale yellow crystalline powder
Density	2.6-2.8 g/cm³
Decomposition Temperature	Approx. 800℃, decomposes into cerium oxide and carbon dioxide at high temperature
Solubility	Insoluble in water and ethanol; soluble in dilute inorganic acids such as dilute hydrochloric acid and dilute nitric acid
Total Rare Earth Oxide (TREO)	≥45%-48% (customizable for industrial/high-purity grade)
CeO₂/TREO	99.0%-99.99% (3N/4N high-purity classification)
Particle Size Morphology	Conventional micron grade, customized large particle and ultrafine powder available

Note: Strictly control non-rare earth impurities such as iron, calcium, silicon and heavy metals. Customized industrial standard indexes and high-precision scientific research indexes are available to meet high-end production requirements of various industries.

3. Core Product Features

1. High Activity and Excellent Conversion Efficiency: The powder has superior chemical activity with fast acid dissolution speed and uniform & stable calcination decomposition without local overheating and caking. It can be efficiently converted into high oxygen storage active cerium oxide, perfectly adapting to various rare earth deep processing synthesis processes with high finished product conversion rate and stable quality.

2. High Purity and Strong Batch Stability: Adopting refined purification technology, it has high main rare earth content and extremely low non-rare earth impurities. Each batch features consistent indexes and negligible performance fluctuation, meeting the strict standards of high-precision industrial scenarios such as glass manufacturing, precision catalysis and semiconductor polishing.

3. Adjustable Powder Performance: Customizable conventional, large-particle and ultrafine particle sizes are available according to customer needs. The powder has good fluidity without agglomeration, adapting to feeding, reaction and processing requirements of diverse industrial production lines.

4. Stable Physical and Chemical Properties & Easy Storage: It maintains long-term stable physical and chemical properties in sealed and dry environment without deterioration and failure. Only slight moisture absorption occurs in extreme high-humidity environments, featuring simple warehouse management and low comprehensive use cost.

4. Main Application Fields

1. Rare Earth Deep Processing Precursor: Core intermediate raw material for cerium-based rare earths, mainly used for calcination to prepare high-purity cerium dioxide, and synthesis of various cerium salts such as cerium nitrate and cerium chloride. It is the basic core material for rare earth smelting and deep processing industrial chain.

2. Glass Industry Modifying Additive: Served as high-efficiency glass decolorizer, clarifier and UV barrier additive. It effectively eliminates internal bubbles and surface yellowing defects of glass, significantly improves glass light transmittance, mechanical strength and aging resistance. Widely used in the production of optical glass, architectural glass, crystal glass and special craft glass.

3. High-end Precision Polishing Material: Core precursor raw material for preparing rare earth polishing powder and polishing slurry. It features uniform polishing cutting force and high finished product yield, suitable for precision polishing of high-precision workpieces such as optical lenses, mobile phone cover glass, sapphire substrates and semiconductor wafers.

4. Environmental Catalytic Material: Specially used for the preparation of automobile exhaust three-way catalysts and industrial waste gas purification catalysts. Relying on the unique oxygen storage and release characteristics of cerium elements, it effectively improves the catalytic reaction activity and high-temperature thermal stability, efficiently decomposes and purifies harmful gases in exhaust gas, adapting to industrial environmental protection denitrification and waste gas treatment scenarios.

5. New Functional Ceramic Material: Used as a modifying additive for electronic ceramics and functional ceramics. It optimizes ceramic sintering process, reduces sintering temperature, and improves ceramic density, mechanical properties and electrical stability. It is also applied in the preparation of rare earth luminescent materials, special refractory materials and polymer anti-aging materials.

6. Industrial Water Treatment Environmental Protection: With excellent phosphate adsorption capacity, it is a high-efficiency environmental protection phosphorus removal raw material, which can accurately adsorb phosphorus pollutants in water bodies and effectively improve water quality. Widely used in the purification treatment of industrial sewage, landscape water and aquaculture water.

5. Packaging Specifications

Conventional packaging: 25kg fiber drum, 25-50kg woven bag, ton bag. Adopt inner PE moisture-proof sealed bag and outer reinforced protective packaging to completely avoid moisture and damage during transportation.

Support small-batch sample packaging and exclusive customized export packaging, which complies with domestic and foreign warehousing standards and sea transportation requirements, meeting diverse needs of sample testing, bulk procurement and foreign trade export.

6. Storage and Transportation

1. Store in a cool, dry and ventilated special chemical warehouse with fully sealed storage to prevent moisture, caking, rain and direct sunlight.

2. Strictly prohibit mixed storage and transportation with strong acids, strong oxidants and food materials. Keep the warehouse dry, clean, ventilated and odor-free.

3. Handle with care during loading and unloading to avoid package damage and dust leakage and ensure operation safety.

4. The shelf life is 24 months under standard sealed and dry storage conditions. It is recommended to use up the product as soon as possible after opening to avoid moisture absorption affecting the use effect.

5. Wear dust-proof protective equipment during operation and strictly follow standardized operating procedures for chemical products.