Explore YANXA's specification-led export grades. Every batch is rigorously certified, batch-tracked, and packaged for dangerous goods maritime and air transport.
Ammonium oxalate monohydrate (CAS No. 6009-70-7, Molecular Formula: C₂H₈N₂O₄·H₂O) is an essential organic dicarboxylic acid diammonium salt utilized where high selectivity, controllable precipitation kinetics, and residue-free thermal decomposition are non-negotiable. YANXA delivers optimized particle size distributions (PSD), specialized anti-caking morphology, and strict ionic impurity thresholds required by modern industrial automation.
Standard ammonium oxalate crystals often present irregular needle-like geometries susceptible to crushing and heavy caking. Our closed-loop fluid-energy jet milling delivers spherical or pseudo-cubic ultrafine particles with narrow Span indices ((D90-D10)/D50 < 1.2), preventing process agglomeration.
For applications in electronic component dielectric formulations and optical-grade rare earth extraction, parasitic ions such as Fe, Pb, Cl, and SO₄ can degrade downstream performance. YANXA implements fractional multi-stage recrystallization to achieve ppm-level impurity caps.
Unlike alkali oxalates (such as sodium or potassium oxalate), ammonium oxalate undergoes clean endothermic sublimation and thermal breakdown above 200°C into gaseous ammonia, carbon dioxide, carbon monoxide, and water vapor, leaving zero ash residue in ceramic or catalyst calcination.
We supply diverse industrial and analytical classifications tailored to specific technical protocols. The parameters below illustrate typical batch values validated by ICP-MS, laser particle diffraction (Mastersizer 3000), and automated potentiometric titration.
| Analytical Parameter | Electronic & Optical Grade | Industrial Rare-Earth Grade | Fine Analytical Reagent (AR) | Testing Methodology |
|---|---|---|---|---|
| Assay [(NH₄)₂C₂O₄·H₂O] | ≥ 99.85% | ≥ 99.0% | ≥ 99.5% | Redox Titration (KMnO₄) |
| Median Particle Size (D50) | 5.0 – 12.0 µm | 15.0 – 35.0 µm | 40.0 – 80.0 µm | Laser Diffraction (Dry Dispersion) |
| Span [(D90 - D10) / D50] | ≤ 1.15 | ≤ 1.45 | ≤ 1.80 | Calculated PSD Distribution |
| Insoluble Matter in H₂O | ≤ 0.003% | ≤ 0.02% | ≤ 0.005% | Gravimetric Method |
| Residue on Ignition (Ash) | ≤ 0.010% | ≤ 0.030% | ≤ 0.020% | 800°C Muffle Furnace Calcination |
| Chloride (Cl⁻) | ≤ 0.0005% (5 ppm) | ≤ 0.003% | ≤ 0.001% | Turbidimetric Analysis |
| Sulfate (SO₄²⁻) | ≤ 0.001% (10 ppm) | ≤ 0.005% | ≤ 0.002% | Barium Sulfate Turbidimetry |
| Iron (Fe) | ≤ 0.0001% (1 ppm) | ≤ 0.001% | ≤ 0.0002% | ICP-OES / Orthophenanthroline |
| Heavy Metals (as Pb) | ≤ 0.0002% (2 ppm) | ≤ 0.001% | ≤ 0.0005% | Atomic Absorption Spectrophotometry |
| pH Value (50 g/L Solution, 25°C) | 6.0 – 7.0 | 6.0 – 7.2 | 6.2 – 7.0 | Glass Electrode Potentiometry |
Ultrafine ammonium oxalate performs critical chemical tasks across global metallurgy, electronics, precision synthesis, and energy storage supply chains.
Ammonium oxalate serves as an elite precipitating agent in the fractional separation of heavy and light rare earth elements (Lanthanum, Cerium, Neodymium, Dysprosium, and Yttrium). Ultrafine particles accelerate complexation kinetics, generating uniform rare earth oxalate crystals that calcine smoothly into ultra-pure rare earth oxides (REO > 99.999%) with optimized specific surface area.
In multilayer ceramic capacitors (MLCC), barium titanate (BaTiO₃) dopants, and piezoelectric substrates, sub-micron particle size is paramount. Our ultrafine grade prevents local chemical segregation, ensuring uniform grain boundaries, lowered dielectric loss tangents, and repeatable sintering shrinkage without alkali ion cross-contamination.
Used as a complexing and chelating buffer in chemical-mechanical planarization (CMP) polishing formulations for copper interconnects and cobalt barrier layers in semiconductor fabrication. Ultrafine purity avoids micro-scratching on silicon wafers while maintaining stable dissolution selectivity across variable pH regimes.
Acts as an organic ligand and structure-directing agent in the synthesis of automotive de-NOx catalysts, hydrotreating zeolites, and petrochemical dehydrogenation catalysts. Its clean volatilization during calcination creates uniform micropores and high active metal dispersion without leaving sulfur or sodium residues.
Standardized laboratory-scale quantitative determination of calcium, lead, cerium, and magnesium ions through gravimetric and redox techniques. High analytical assay stability ensures precise molar reactions in biomedical testing, environmental monitoring, and forensic assays.
Emerging as an environmentally benign leaching and selective precipitation agent for recovering valuable cobalt, nickel, and manganese from shredded spent cathode black mass. Enables closed-loop transition metal recovery with lower carbon intensity than mineral acid extraction.
YANXA leverages an integrated production cluster combining continuous synthesis, intelligent DCS process automation, nitrogen-shielded jet milling, and closed-loop environmental controls to guarantee uninterrupted bulk material delivery to international markets.
Automated reaction crystallization utilizing high-purity synthetic oxalic acid and electronic-grade ammonia water under continuous stoichiometry control.
High-G closed titanium centrifuges wash mother liquor to remove mother ions, lowering chloride and free acid contents below stringent target values.
Low-temperature inert gas fluidized bed drying preserves the precise monohydrate crystalline water balance ((NH₄)₂C₂O₄·H₂O) without thermal decomposition.
Supersonic nitrogen fluid-energy jet milling with real-time laser diffraction feedback guarantees pinpoint particle cut-offs down to sub-10 micron sizes.
Automated vacuum-heat-sealed barrier packaging with desiccants and nitrogen purge guarantees 24-month caking-free storage for ocean transit.
Our raw material access is backed by long-term strategic off-take contracts with foundational chemical synthesis hubs in China, mitigating upstream shortages of ammonia or oxalic acid feedstocks and safeguarding pricing stability for annualized enterprise contracts.
Distributed control systems (DCS) continuously monitor pH, supersaturation curves, crystallization temperature cooling profiles, and agitation shearing rates to eliminate lot-to-lot variances across multi-hundred metric ton production campaigns.
Equipped with complete waste mother-liquor crystallization recovery loops and advanced SCR flue-gas ammonia stripping systems, maintaining zero unmitigated chemical discharge in full compliance with Chinese national green chemical park standards.
YANXA's material science laboratory collaborates with institutional partners to pioneer advanced surface modifications, non-caking micro-encapsulations, and specialty grades serving decarbonized high-technology manufacturing.
Developing ultra-trace, vapor-phase organosilane functionalized monolayers and food/pharma compatible nano-silica spacing that inhibit recrystallization bridging in humid trans-equatorial maritime containers without compromising solubility.
Scaling cryogenic fluid-energy nanogrinding to supply sub-2-micron ammonium oxalate powders for advanced solid-state electrolyte precursor precipitation and fine-grain optical crystal dopants requiring instantaneous stoichiometric reactivity.
Providing custom premixed, stabilized saturated ammonium oxalate aqueous concentrates packaged in cleanroom IBC totes for semiconductor and electronic component clients wishing to avoid powder handling and particulate dispersion in-house.
Integrating verified digital product passports (DPP) detailing product carbon footprints (PCF) from feedstock ammonia synthesis to delivery port, empowering global multinational procurement officers to satisfy ESG and CBAM mandates.
Purchasing specialty chemical compounds across borders requires rigorous adherence to regional safety legislation, customs documentation, and dangerous goods logistics protocols.
Full support for EU REACH dossiers, pre-registrations, SVHC statements, and RoHS compliance certificates. Our regulatory team coordinates with Only Representatives (OR) in Europe and regional agents in North America, Japan, and South Korea to ensure hassle-free customs clearance.
Every shipment is matched with compliant 16-section Safety Data Sheets (SDS) in multiple local languages (English, German, French, Spanish, Japanese, Korean) conforming to UN GHS Revision 9 standards, complete with correct toxicological, first-aid, and disposal data.
Packaged in UN-certified 25 kg polypropylene woven outer bags with heavy-duty PE inner liners, hermetic fiber drums, or 500 kg / 1,000 kg anti-static super-sacks (Type C / Type D). Fumigated heat-treated ISPM-15 wooden pallets or heavy-duty plastic pallets available on request.
Enterprise procurement divisions manage complex vendor matrices. YANXA satisfies key vendor qualification audits across operational risk, financial sustainability, technical consistency, and supply contract guarantees.
Stringent statistical process control safeguards key indices. Every production run is cross-audited against historical master curves, keeping deviations within tightly defined 3-sigma boundaries.
Every commercial lot ships with its actual batch Certificate of Analysis. Physical retained control samples are sealed under inert gas and archived for a minimum of 36 months to ensure comprehensive traceability.
SGS, Intertek, or BV pre-shipment sampling and analytical re-verification available at loading port (Shanghai, Qingdao, Ningbo) before cargo release, satisfying international commercial letter of credit (L/C) requirements.
Chemical and material engineering specialists provide real-time consults on dissolution rates, pH buffering curves, precipitation stoichiometry, and custom particle distributions within 24 business hours.
Comprehensive engineering, regulatory, and purchasing answers for material buyers, chemical process engineers, and supply chain managers.
Review additional specialty chemical solutions manufactured under strict technical compliance. Retain direct access to products across our six core production divisions.
Submit your target median particle diameter (D50), chemical purity thresholds, annual procurement volume, and destination port. Our engineering team responds with batch COAs, sample test options, and formal pricing within 24 hours.
