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Red Sun stands as the first enterprise in China to industrialize the synthesis of pyridine derivatives, achieving a major breakthrough in the nitrogen-containing heterocyclic agrochemical sector and dismantling decades of foreign monopoly. With the most comprehensive and largest pyridine production chain in the industry, the company has established three major green agrochemical chains featuring “world-leading innovation, independent control, and circular economy,” along with 20 globally recognized benchmark products.
As a core raw material, Pyridine (CAS No. 110-86-1, C₅H₅N) serves as the essential building block for high-efficiency, low-toxicity pesticides, pharmaceuticals, and chemical intermediates. Leveraging proprietary technology, Red Sun has broken the 60-year Western monopoly on pyridine dehydrogenation coupling, achieving industrial-scale production with an annual capacity of 75,000 tons—representing 45% of global output. Pyridine plays a pivotal role in synthesizing herbicides like diquat and paraquat, insecticides such as chlorpyrifos and chlorantraniliprole, as well as vitamin B3 (niacinamide), powering the world’s largest pyridine industrial ecosystem
Parameter | Details |
Product Name | Pyridine |
CAS Number | 110-86-1 |
Chemical Formula | C₅H₅N |
Molecular Weight | 79.10 |
Density (20°C) | 0.983 g/cm³ |
Melting Point | -41.6°C |
Boiling Point | 115.3°C |
Flash Point | 25°C (closed cup) |
Purity | ≥ 99.5% (Actual: 99.95%) |
Color (Hazen) | ≤ 20 (Actual: 10) |
Moisture | ≤ 0.1% (Actual: 0.02%) |
Chloride Content | ≤ 0.005% (Actual: <0.005%) |
Ammonia Content | ≤ 0.05% (Actual: <0.05%) |
Water Solubility | Soluble |
Safety Classification | Harmful (Xn), R20/21/22 |
Standard | GB/T 27567-2011 |
Batch Number | 20250529013 |
Inspection Date | 2025-05-29 |
Quantity | 29,980 kg |
Pyridine serves as a core platform for multiple reactions including chlorination, oxidation, and coupling. These processes enable the production of herbicides, insecticides, pharmaceutical intermediates, and specialty chemicals, making it essential for integrated chemical manufacturing chains.
Paraquat and Diquat synthesis begins with Pyridine as a starting point. Chlorinated pyridine derivatives further enable the production of Fluroxypyr and Chlorpyrifos, ensuring the raw material supply for a broad range of crop protection chemicals.
Pyridine derivatives form intermediates for Vitamin B3 production and other active ingredients. Dimethylpyridine routes also lead to Omeprazole and Lansoprazole synthesis, supporting the pharmaceutical industry with essential raw materials.
Methylpyridine derivatives contribute to producing vinylpyridine latex, used to enhance bonding strength in tire cords. Other derivatives support the synthesis of antiseptics, coatings, and other high-value industrial chemicals.
Red Sun ensures Pyridine purity exceeds 99.5%, with moisture levels maintained below 0.1%. Annual production capacity reaches 75,000 tons, meeting large-scale demands across agriculture, pharmaceuticals, and industrial applications.
Vertically Integrated Chain
Red Sun controls the full process. It starts from methanol, ethanol, and biomass feedstocks. It covers intermediates like Pyridine and methylpyridine. It reaches final agrochemical and pharmaceutical products. This unique vertical chain lowers cost and ensures supply stability.
Independent Innovation & High Technical Barriers
The company owns full intellectual property rights for its chain. Its technologies are self-developed and hard to replicate. This creates strong competitive barriers in the global market.
Circular Economy Model
Red Sun applies a closed-loop production model. By recycling by-products, it reduces resource waste and energy use. This approach cuts cost and limits environmental impact.
Green, Safe, and Efficient
The products decompose quickly in the environment. They leave no harmful residues. Their low toxicity replaces older, high-risk agrochemicals.
Wide Range of Applications
In agriculture, they support herbicides like Paraquat and insecticides like Chlorpyrifos. In pharmaceuticals, they produce Vitamin B3 and gastric drugs. In daily chemicals, they supply ZPT for shampoos. In industry, they provide vinylpyridine latex for materials.
High Value-Added
These products belong to the fine chemicals sector. They deliver high technical content and much higher value than raw materials.
Breaking International Monopoly
Red Sun’s innovations reduce dependence on foreign suppliers. They lower costs and improve industrial autonomy.
Filling a Domestic Gap
Their full-chain technology bridges key gaps in China’s chemical industry. It strengthens national competitiveness in core sectors.
Serving National Strategy
Products support agriculture with cost-effective and eco-friendly solutions. They align with food security and rural development goals.
Red Sun builds the world’s only full-chain pyridine ecosystem. It combines coal-based and bio-based raw materials with digital biochemistry to produce pyridine and its derivatives at industrial scale.
· Full-Scale Industrialization
The chain covers raw materials, intermediates, and final products. It enables stable supply and cost control.
· Digital Biochemistry
The system uses biochemistry plus digital control to ensure efficiency and consistent product quality.
· Extensive Patents
The company holds 1,186 domestic patents and 12 PCT patents for global markets.
· Quality System
It leads 22 national and 16 industry standards for pyridine products.
· Resource Recycling
Production follows a closed-loop model to minimize waste and reuse by-products effectively.
Pyridine is a flammable liquid with strong irritation. It affects the central nervous system. Exposure can be through inhalation, ingestion, or skin contact. Long-term exposure may harm liver, kidneys, and cause skin inflammation.
For skin contact, remove contaminated clothing and rinse with water. For eye exposure, rinse with water or saline for 15 minutes. If inhaled, move to fresh air and give oxygen if needed. For ingestion, give water to conscious patients and seek medical help.
Pyridine vapors form explosive mixtures with air. It reacts with oxidizers. Firefighters should use water spray, foam, CO₂, dry powder, or sand. Wear full protective suits and breathing equipment. Do not use acid or alkali extinguishers.
Evacuate people and cut off fire sources. For small spills, use sand or lime to absorb. For large spills, build dikes or pits and pump the liquid to containers for treatment. Avoid entry into drains or confined spaces.
Operate in closed systems with local exhaust. Use protective clothing, gloves, and masks. Keep away from heat, sparks, and oxidizers. Store in cool, ventilated places below 30°C with explosion-proof lighting and ventilation.
Keep vapor levels below set limits: China MAC 4 mg/m³, OSHA 5 ppm. Use masks, safety glasses, gloves, and protective suits. No eating, drinking, or smoking at the workplace. Shower after work and have regular health checks.
