Explore our certified range of industrial chemicals, engineered to strict compliance standards for diverse macro-industrial applications.
Established in 2006 (Stock Code: 307785), Shandong Pulisi Chemical Co., Ltd. is a modern large-scale chemical enterprise integrating R&D, manufacturing, domestic trade, and international logistics. Over nearly two decades of strategic evolution, we have focused on petrochemicals, mining chemicals, feed chemicals, and pharmaceutical chemicals, establishing long-term, stable partnerships with Fortune Global 500 companies such as China National Petroleum Corporation (CNPC) and Saint-Gobain.
Our operational headquarters is situated in Zibo, Shandong Province, a major hub for the chemical industry in China. Driven by customer requirements, we construct complete industrial chain services. We maintain ISO9001:2015 Quality Management System Certification, German BV Certification, K-REACH registration, FAMI-QS Certification, alongside Halal and Kosher certifications. In 2023, the company successfully completed its public listing under Stock Code 307785, cementing our position as a highly transparent, capital-backed manufacturer focused on sustainable value creation.
To ensure supply chain resilience, Pulisi has established mature warehousing and distribution hubs at critical domestic ports and borders: Qingdao Port, Tianjin Port, and Xinjiang land border crossings (Alashankou and Khorgos). These distribution points support rapid transit, custom clearance bypasses, and multi-modal logistics, ensuring stable lead times even during volatile macro-market events.
A comprehensive engineering review of manufacturing pathways, quality metrics, and purity thresholds for high-demand industrial systems.
Oxalic Acid (ethanedioic acid, $H_2C_2O_4$) is the simplest dicarboxylic acid, exhibiting strong reducing properties and high affinity for divalent metal cations. As a critical intermediate in organic synthesis, metal finishing, and mineral extraction, the selection of an oxalic acid manufacturer depends heavily on the synthesis route employed. The production process dictates the impurity profile, grain size distribution, and compatibility of the acid with sensitive downstream applications (such as semiconductor processing and lithium battery cathode purification).
This is the dominant industrial pathway utilized by world-class manufacturers in China. It starts with the reaction of carbon monoxide ($CO$) with sodium hydroxide ($NaOH$) under high pressure and temperature to yield sodium formate ($HCOONa$). The sodium formate is subsequently heated rapidly to approximately 400°C in the presence of basic catalysts to undergo dehydrogenation, forming sodium oxalate ($Na_2C_2O_4$) and hydrogen gas ($H_2$):
The resulting sodium oxalate is reacted with calcium hydroxide ($Ca(OH)_2$) to precipitate insoluble calcium oxalate ($CaC_2O_4$), leaving sodium hydroxide, which is recycled back to the start of the process loop. The calcium oxalate precipitate is then acidulated with sulfuric acid ($H_2SO_4$) to yield a crude oxalic acid solution and a calcium sulfate (gypsum) by-product:
The crude oxalic acid solution is subsequently refined via multiple recrystallization, filtration, and drying stages to control trace heavy metals, iron ions, and chloride levels, yielding the commercial-grade dihydrate crystals ($99.6\%$ min purity).
Historically, carbohydrates (such as glucose, starch, or sucrose) or petrochemical-derived ethylene glycol have been oxidized using nitric acid ($HNO_3$) in the presence of a vanadium pentoxide ($V_2O_5$) catalyst. While this pathway yields high-grade oxalic acid directly, the reaction generates substantial nitrogen oxides ($NO_x$), requiring extensive emission abatement infrastructure. Modern Chinese facilities utilizing state-of-the-art closed-loop gas treatment loops have optimized this process to synthesize high-purity variants with minimal ecological impacts.
| Parameter Spec | Industrial Grade (Dihydrate) | High-Purity / Electronics Grade | Testing Methodology |
|---|---|---|---|
| Assay ($H_2C_2O_4 \cdot 2H_2O$) | ≥ 99.6% | ≥ 99.9% | Acid-base Titration |
| Iron ($Fe$) Content | ≤ 0.002% (20 ppm) | ≤ 0.0001% (1 ppm) | ICP-OES / AAS |
| Heavy Metals (as $Pb$) | ≤ 0.001% (10 ppm) | ≤ 0.0002% (2 ppm) | Colorimetric / ICP-MS |
| Chloride ($Cl^-$) | ≤ 0.002% (20 ppm) | ≤ 0.0005% (5 ppm) | Turbidimetry |
| Sulfate ($SO_4^{2-}$) | ≤ 0.08% | ≤ 0.005% | Ion Chromatography |
| Ignition Residue (Ash) | ≤ 0.08% | ≤ 0.01% | Gravimetric (800°C) |
How global enterprises utilize oxalic acid and associated chemical products across critical industrial segments.
Oxalic acid is the premier choice for the precipitation of trivalent lanthanides from refined acidic leach solutions. Rare earth oxalates precipitate selectively, leaving behind contaminants like iron and calcium.
Used to remove metallic impurities from raw precursor materials (cobalt, nickel, manganese) to guarantee battery performance. Iron impurities are minimized to prevent dendrite formation and short circuits.
Oxalic acid acts as an effective chelating agent for iron oxide ($Fe_2O_3$). It converts insoluble rust deposits into water-soluble iron oxalate complexes ($[Fe(C_2O_4)_3]^{3-}$), which are easily washed away.
Serves as a critical organic building block for synthesizing broad-spectrum antibiotics (such as Oxytetracycline and Tetracycline), as well as serving as a purifying precipitant for active pharmaceutical ingredients (APIs).
In textile and leather industries, it acts as a pH stabilizer and a color-stripping agent to eliminate rust stains from fibers and to prepare leather surfaces for uniform tanning dye absorption.
Deploying digitalized chemical manufacturing and multi-modal logistics networks to stabilize global supply operations.
Shandong Pulisi Chemical Co., Ltd. has updated its manufacturing infrastructure in Zibo to align with China's Factory 4.0 roadmap. We have transitioned from traditional localized control systems to integrated Distributed Control Systems (DCS) and Safety Instrumented Systems (SIS). Continuous monitoring of pressure, temperature, flow, and chemical yield at every stage of the Sodium Formate dehydrogenation loop ensures that process variance is reduced by over $94\%$ compared to standard batch processing. The results are highly uniform, dust-free white crystals with exceptional dissolution rates.
Furthermore, our supply chain is engineered to withstand geopolitical and domestic logistics bottlenecks. Shandong Pulisi maintains direct warehousing at the following transit centers:
Verified compliance certifications ensuring quality control, trace metal boundaries, and product safety.
Operational facilities, industrial manufacturing sites, and national recognition awards.
Participating in worldwide chemical expos, building connections with downstream industrial entities.
High-quality salts and acids formulated for specialized industrial applications, including mining, water treatment, and textile processes.
Our solutions target key industrial domains, providing reliable performance and chemical purity.
Chemicals For Textile, Printing & Dyeing & Leather
Agricultural Chemicals, Food And Feed Additives
Chemicals For Construction And Coatings
Chemicals For Mining
Chemicals For Oil Drilling
Disinfectant And Solvent Chemicals
Chemicals For Water Treatment
Plastic Raw Material
Industrial capacity combined with experienced technical personnel and global logistics capabilities.
Currently exporting chemical solutions to more than 100 countries and regional territories.
More than 20 years of export experience, maintaining active supply partnerships with 1,000+ companies.
ISO Certification, SGS Certification, K-REACH Registration, FAMI-QS Certification, and Halal/Kosher approvals.
Competitive commercial terms constructed around client requirements, custom specifications, and long-term agreements.
Integrated supply warehouses established near major ports to expedite customs, loading, and marine shipping logistics.
Technical service agents and supply chain managers available for real-time order tracking and support.
Working closely with leading companies to build stable chemical value chains worldwide.
Continued listing of our industrial portfolio, complete with direct purchase links and technical specifications.
Industrial procurement answers, logistics insights, and technical verification guidelines.
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