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Heavy Aromatic Solvents, primarily categorized as C9, C10, and C12+ complex aromatic hydrocarbons, represent a vital class of industrial solvents used extensively across diverse sectors. With their elevated boiling points, slow evaporation rates, and exceptionally high solvency power (Kauri-Butanol values exceeding 90), these solvents serve as the structural backbone for agrochemical formulations, heavy-duty industrial coatings, oilfield process engineering, and automotive chemicals.
Unlike aliphatic alternatives, heavy aromatic solvents (often referred to commercially as Solvent Naphtha, TOPSOL, KOCOSOL, Aromatic Hydrocarbon, and Solvesso equivalents) feature high thermal stability and low surface tension. This makes them ideal for formulating high-solids coatings and emulsifiable concentrates (EC) in crop protection applications where active ingredients must remain fully dissolved and homogeneous over broad temperature gradients.
A major advancement in modern heavy aromatic solvent technology is the isolation and removal of toxic polycyclic aromatic hydrocarbons (PAHs), specifically Naphthalene. Standard S150 aromatic solvents contain up to 8% naphthalene, which is classified as a potential human carcinogen and environmental hazard. Modern refiners utilize precise vacuum distillation to reduce naphthalene levels down to <1.0% (Low Naphthalene) or even <0.1% (Ultra-Low Naphthalene / ND Grades), producing specialized solvents like S150ND (CAS No. 64742-94-5). This process retains high solvency parameters while meeting stringent European REACH regulations and global environmental safety standards.
Shandong Saier Chemical Technology Development Co., Ltd. has embarked on an impressive journey since its establishment in December 2004. Situated at No.207, WeiLiu Road, Qilu Chemical Industrial Park, Linzi, Zibo City, Shandong Province, the company has continuously evolved and thrived in the highly competitive chemical industry. In early times, with a registered capital of 60 million yuan, the company laid a solid financial foundation. Initially, it focused on the production of basic chemical products.
The initial product lineup included environmentally friendly high-boiling aromatic solvents (such as Solvent naphtha, TOPSOL, KOCOSOL, Aromatic Hydrocarbon, TOLUENE AROMATIC HYDROCARBON, NAFTA DISOLVENTE SOLVESSO) such as S-100, S-150, S-150ND, S-180, and S-200, Heat transfer oils L-QC320 and other main Intermediate products along with products like durene, PVC plasticizers, thiophene, 1,3-Cyclohexanedione, MIPK, TMOF, TMOA, HPA, and TMG. These raw products were mainly sourced from major refineries and aromatic plants such as Sinopec, PetroChina, ChemChina, Zhejiang Petrochemical, and Hengli Petrochemical. By leveraging these reliable raw material sources, the company was able to ensure product quality from the start. At that time, the production capacity was 720,000 tons per year, and the products were mainly sold in domestic markets including Beijing, Shanghai, Tianjin, Hebei, Shandong, Henan, as well as directly to oil majors like Sinopec and PetroChina.
As the years passed, Shandong Saier Chemical Technology Development Co., Ltd. recognized the importance of innovation and technological advancement. It began to invest significantly in research and development. The company aimed to improve production efficiency, enhance product quality, and develop more environmentally friendly products. For instance, in response to the growing demand for energy-saving and environmentally friendly products in the market, the company started to optimize its production processes. It explored new production technologies to reduce energy consumption and waste generation. This led to the company's recognition as a national high-tech enterprise, which not only brought more policy support but also enhanced its brand image in the industry.
Equipped with automated continuous fractional distillation towers, advanced Quality Control laboratories, and storage tanks aligned with international safety standards, our factory represents the technological benchmark in East China's refining hubs.
Being strategically situated inside Zibo's Qilu Chemical Industrial Park allows direct pipeline integration with Sinopec's refining units. This proximity eliminates internal logistics delays and ensures a continuous feed of crude C9-C12 aromatic cuts, translating directly to cost stability and raw material traceability for our global buyers.
Direct proximity to refining powerhouses like Sinopec and PetroChina guarantees a resilient raw material supply and shields production from global upstream shocks.
Our fractionating columns utilize structured packing and DCS automation controls, enabling narrow boiling ranges and precise separation of target isomers.
Through state-of-the-art zeolite rotors, thermal oxidizers, and recycling systems, our plant minimizes hydrocarbon VOC emissions during refining phases.
Compare the physical and chemical properties of our main aromatic solvent grades. Our production features tight molecular ranges to guarantee optimal safety limits and chemical carrier properties.
| Solvent Grade | CAS Registry No. | Boiling Range (°C) | Flash Point (°C, PMCC) | Aromatic Content (Vol %) | Naphthalene Content (Wt %) | Primary Industrial Use |
|---|---|---|---|---|---|---|
| Aromatic Solvent S100 | 64742-95-6 | 160 - 180 | > 40 | > 99.0 | < 1.0 | Coating resins, high-speed printing inks, agricultural EC formulations |
| Aromatic Solvent S150 | 64742-94-5 | 180 - 210 | > 62 | > 99.0 | ~ 6.0 - 8.0 | Industrial baking enamels, foundry binders, oilfield chemicals |
| Aromatic Solvent S150ND | 64742-94-5 | 182 - 208 | > 63 | > 99.0 | < 0.9 (Low Naphthalene) | Eco-compliant pesticide emulsifiable concentrates (EC), marine coatings |
| Aromatic Solvent S200 | 64742-94-5 | 230 - 290 | > 100 | > 99.0 | < 1.0 (ND grade available) | High-boiling chemical processes, mining extraction, coil coatings |
Heavy aromatics like S150ND serve as the carrier solvent for water-insoluble pesticides. They dissolve active organic ingredients efficiently while ensuring high dispersion and emulsion stability in spray tanks.
In automotive, coil, and container coatings, these high-boiling solvents control evaporation rates during baking processes, promoting optimal film leveling and preventing surface defect formations.
Our aromatic fractions are utilized as drag-reducing agents, paraffin dispersants, and oil-water demulsifiers, supporting uninterrupted operations in deep-well exploration and cross-country transportation.
B2B procurement of heavy solvents requires strict compliance with international customs regulations, logistics standards, and environmental certifications. Shandong Saier Chemical provides end-to-end support to meet these specialized criteria:
Our S100 and S150ND solvents are registered under the EU REACH regulation, guaranteeing trouble-free custom clearances into European port facilities.
Operating as a major exporter, we facilitate transport via ISO tanks and steel drums (200L/180kg net weight), matching strict UN-certified container requirements.
Our Zibo facility maintains extensive raw feedstock and finished product storage tanks, offering reliable buffer capacity against short-term market disruptions.
The fundamental difference lies in the naphthalene content. Regular Aromatic Solvent S150 contains 6% to 8% naphthalene by weight. S150ND (Naphthalene Depleted) goes through an additional post-rectification step that reduces the naphthalene fraction to less than 1.0% (and often below 0.1%), matching environmental toxicity standards for crop protection products and minimizing hazard classifications on labels.
Our company secures C9, C10, and C12 feedstock directly from nearby state-level petrochemical complexes like Sinopec, PetroChina, ChemChina, Zhejiang Petrochemical, and Hengli Petrochemical. Our location inside the Qilu Chemical Industrial Park allows us to integrate raw feedstock lines directly into our primary processing units, securing volume stability even during high seasonal refinery demands.
Every production batch undergoes comprehensive analysis utilizing Agilent Gas Chromatography (GC-FID/MS) systems, ASTM D86 distillation test methods, and ASTM D93 Pensky-Martens closed-cup testers. We issue full Certificates of Analysis (COA) specifying density, distillation range, flash point, aromatic content, and moisture levels before any material leaves our facility.
Yes, because of their high solvent power (high KB value) and slow evaporation rates, our products are highly compatible with alkyd resins, acrylics, epoxies, and polyurethanes. They are commonly used as thinning and leveling solvents in heavy industrial coatings, anti-corrosion marine applications, and coil-coating lines.
We operate with an annual capacity of 720,000 tons, balancing manufacturing scale, high-tech engineering, and environmental sustainability.
Produced using crude C10 aromatics for industrial use as raw material and through continuous rectification for separation technology. It is a colorless, transparent, and aromatic organic solvent that complies with international standards.
Specially manufactured intermediates supporting downstream agricultural and polymer manufacturing lines.
Providing high thermal stability for heating systems inside industrial chemical plants and processing machinery.
Including high-purity durene and heterocyclic chemicals supporting advanced electronic and printing formulations.
Browse our core intermediate chemicals and specialized solvent grades. We support customized batch formulations for global sourcing groups.
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Saier Chemical
