Sodium bicarbonate is a white crystalline powder and an inorganic chemical raw material, characterized by weak alkalinity, thermal decomposition, and high purity. It is suitable for a wide range of applications, including flue gas desulfurization and rubber and plastic foaming, and complies with the new national standard GB/T 1606-2025.

Sodium Bicarbonate

Product Overview

Industrial sodium bicarbonate, commonly known as baking soda, is a white crystalline powder and a fundamental inorganic chemical raw material. With its weak alkalinity, thermal decomposition properties, and high purity, it plays an irreplaceable multifunctional role across numerous industrial sectors, including flue gas desulfurization, rubber and plastic foaming, fine chemicals, textile dyeing and leather tanning, as well as environmental protection and pollution control. The product strictly complies with the new national standard GB/T 1606-2025 “Industrial Sodium Bicarbonate,” which came into effect on January 1, 2026, ensuring quality compliance and meeting the diverse production and environmental requirements of multiple industries.

Technical Principles

The chemical formula of industrial sodium bicarbonate is NaHCO₃, and its core technical principles are based entirely on three key chemical characteristics. First is its thermal decomposition property: above 50°C, it slowly decomposes, releasing carbon dioxide gas; at 100°C, the decomposition rate significantly accelerates. This characteristic underpins its pivotal roles as a foaming aid in rubber and plastics and as a desulfurizing agent for flue gases. Second is its weak alkalinity: its aqueous solution exhibits slight alkalinity, with a pH value ≤8.6 in a 10 g/L solution, enabling effective neutralization of various acidic substances, making it suitable for pH adjustment and treatment of acidic waste gases in industrial settings. Lastly, its high purity and reactivity: high-purity industrial sodium bicarbonate rapidly reacts with acidic gases such as SO₂, HCl, and HF present in flue gases, forming stable, harmless sulfates, chlorides, and other compounds, thereby achieving efficient removal of acidic pollutants. The new national standard GB/T 1606-2025 applies to industrial sodium bicarbonate produced via natural alkali, synthetic, or double decomposition methods, providing a unified standard for industry production and quality control.

Performance Data

1. Appearance and physicochemical indicators: The product appears as fine white crystals or white powder, readily soluble in water, with slightly alkaline aqueous solutions. Total alkalinity (expressed as NaHCO₃) ranges from 99.0% to 100.5%, with a loss on drying ≤0.20%, and a pH value between 8.5 and 8.6 in a 10 g/L solution.
2. Impurity control: Chloride content (expressed as Cl) ≤0.40%, heavy metals (expressed as Pb) ≤5.0 mg/kg, arsenic (As) ≤1.0 mg/kg, while ammonium salts and clarity meet the requirements of GB 1886.2.
3. Thermal decomposition characteristics: Decomposition begins slowly when ambient temperature exceeds 50°C, accelerating at 100°C; if stored in humid conditions, it may absorb moisture and decompose gradually. Therefore, storage in cool, dry warehouses with sealed containers is recommended.
4. Particle size specifications: Conventional products range from 80 mesh to 2000 mesh, with ultrafine grades featuring median particle sizes of 2–5 μm, significantly increasing specific surface area and enhancing reactivity, thus better suited for demanding industrial applications.

Key Competitive Advantages

1. New national standard quality assurance: The product strictly adheres to the requirements of the new national standard GB/T 1606-2025, jointly issued by the State Administration for Market Regulation and the National Standardization Management Committee, proposed by the China Petroleum and Chemical Industry Federation, and managed by the National Chemical Standardization Technical Committee. From raw material production to finished product testing, all processes follow standardized procedures, ensuring traceable quality that fully meets industrial production and export compliance requirements.
2. Diverse product forms and broad applicability: Available in industrial-grade, food-grade, and ultrafine powder varieties, with particle sizes ranging from 80 mesh to 2000 mesh, precisely tailored to meet the differentiated needs of industries such as environmental desulfurization, rubber and plastic foaming, and daily chemical cleaning. Packaging options are equally flexible, offering standard 25 kg woven bags, as well as 50 kg and ton bags (1000 kg), catering to transportation and storage needs of businesses of varying scales.
3. Outstanding environmental and safety attributes: Industrial sodium bicarbonate is non-toxic and harmless; in flue gas desulfurization applications, it achieves desulfurization efficiencies exceeding 95%, producing harmless sulfate and nitrate byproducts without secondary pollution. Post-reaction residues can even be recycled and reused, realizing resource recovery. Compared to traditional desulfurizing agents, it offers flexible dosing, simple operation, and eliminates the need for complex auxiliary equipment, substantially reducing enterprises’ environmental investment costs.
4. Reliable supply and service support: The product is supplied by Weifang Jiangchang Chemical, established in 2015 and deeply rooted in the chemical industry with extensive production experience. The company operates a facility spanning over 8,000 square meters, employs more than 120 staff members, maintains ample inventory, and ensures a continuous, stable supply of industrial sodium bicarbonate. Additionally, the company holds several utility model patents, including anti-clogging granulators and easy-to-clean dryers, and was recognized in 2025 as a national-level technology-based small and medium-sized enterprise, guaranteeing reliable product quality and a comprehensive service system.

Target Customer Groups

1. Coal-fired power plants and industrial boiler users: Including power plants, industrial boilers, and metallurgical kilns that require efficient removal of acidic gases like SO₂ from flue gases, where industrial sodium bicarbonate serves as a core ingredient in dry desulfurization processes, helping these enterprises achieve compliant emissions.
2. Waste incineration power generation companies: During waste incineration, gases such as SO₂, HCl, and HF are generated; industrial sodium bicarbonate can simultaneously remove multiple components of these pollutants, satisfying the flue gas purification needs of waste incineration projects.
3. Rubber and plastic foaming product manufacturers: Covering producers of PVC, EVA, rubber sponges, shoe soles, insulation boards, and other foamed products, where industrial sodium bicarbonate acts as an endothermic foaming aid, enhancing the quality of foamed goods.
4. Fine chemical and daily chemical enterprises: Suitable for applications such as detergent additives, abrasive ingredients for daily chemicals, and compounded industrial cleaning agents, providing essential raw material support to these industries.
5. Textile dyeing and leather tanning enterprises: Can be used for pH adjustment in dyeing processes and neutralization steps during leather tanning, meeting the process requirements of textile dyeing and leather processing.

Core Application Scenarios

1. Dry desulfurization of coal-fired power plant flue gases: Through dry spray technology, industrial sodium bicarbonate is injected into flue ducts, where it rapidly reacts with SO₂, HCl, and HF in the flue gases, achieving desulfurization efficiencies exceeding 95% while also delivering notable denitrification effects. Widely applicable to flue gas treatment scenarios in heavily polluting industries such as electricity, steel, and cement.
2. Flue gas purification in waste incineration: Given the complex composition of acidic gases emitted during waste incineration, industrial sodium bicarbonate can simultaneously remove multiple acid pollutants, with reaction byproducts free from secondary contamination, aligning perfectly with the environmental requirements of waste incineration projects.
3. Production of rubber and plastic foamed products: Ultrafine industrial sodium bicarbonate, acting as an endothermic foaming agent, steadily releases CO₂ gas during high-temperature processing, forming uniform, dense cellular structures that effectively enhance elasticity, toughness, and thermal insulation performance—widely suitable for manufacturing appliance casings, building insulation panels, automotive interiors, and other applications.
4. Fine daily chemical and cleaning raw materials: Used in detergent additives, abrasive ingredients for daily chemicals, and compounded industrial cleaning agents, leveraging its fine particles to provide gentle abrasive assistance and improve the effectiveness of cleaning products.
5. Wastewater treatment and metal surface treatment: Applicable to water pH adjustment, compounded cleaning agents, and metal surface treatments, helping enterprises complete related wastewater treatment and metal processing tasks.

Addressing Core Industry Pain Points

1. High investment and operating costs of traditional desulfurization processes: Traditional wet desulfurization requires complex slurry preparation and wastewater treatment systems, involving substantial equipment investments, large footprints, and high maintenance expenses. In contrast, the dry desulfurization process using industrial sodium bicarbonate eliminates the need for complicated auxiliary equipment, allows flexible dosing and simple operation, produces no secondary pollution after reaction, and significantly reduces enterprises’ environmental investment costs.
2. Low efficiency of conventional granular desulfurizing agents: Ordinary granular desulfurizers have limited specific surface areas and insufficient contact with flue gases, resulting in desulfurization efficiencies that often fail to meet standards. Ultrafine industrial sodium bicarbonate, after ultrafine grinding, boasts a dramatically increased specific surface area and greatly enhanced reactivity, achieving desulfurization efficiencies exceeding 95% and fully complying with environmental emission requirements.
3. Difficulties in handling desulfurization byproducts: Wet desulfurization generates large volumes of wastewater and solid residues, leading to high treatment costs and potential secondary pollution. By contrast, the dry desulfurization process using industrial sodium bicarbonate yields dry powders, whose residues can be recycled and reused, effectively resolving the challenges of byproduct management.
4. Uneven cellular structures in rubber and plastic foams: Common foaming agents produce coarse, uneven cellular structures that adversely affect the quality and performance of rubber and plastic products. Ultrafine industrial sodium bicarbonate, with its tiny particle size, excellent dispersibility, and high foaming efficiency, creates uniform, dense cellular structures, elevating product grade and market competitiveness.

Core Functions of the Product

1. Flue gas desulfurization and acid neutralization: Industrial sodium bicarbonate rapidly reacts with acidic gases such as SO₂, HCl, and HF in flue gases, efficiently removing acidic pollutants and achieving desulfurization efficiencies ≥95%, helping enterprises meet flue gas emission standards.
2. Foaming and pore-forming function: In the production of rubber and plastic foamed products, heat-induced decomposition releases CO₂ gas, forming uniform, fine cellular structures that effectively enhance elasticity, toughness, and thermal insulation performance.
3. pH adjustment and neutralization function: Its aqueous solution exhibits weak alkalinity, enabling effective pH regulation in acidic systems, suitable for applications such as textile dyeing, leather tanning, and wastewater treatment requiring neutralization of acidic substances.
4. Cleaning and abrasive function: In daily chemical cleaning products, it provides gentle abrasion and auxiliary functions, improving dispersion and solubility while enhancing cleaning efficacy.

Core Value and Supporting Qualifications

The industrial sodium bicarbonate supplied by Weifang Jiangchang Chemical has a total alkalinity (expressed as NaHCO₃) ≥99.0%, a loss on drying ≤0.20%, and heavy metal content (expressed as Pb) ≤5.0 mg/kg—all meeting the stringent requirements of the new national standard GB/T 1606-2025. This standard was officially released on June 30, 2025, and came into force on January 1, 2026, jointly issued by the State Administration for Market Regulation and the National Standardization Management Committee, applying to industrial sodium bicarbonate produced via natural alkali, synthetic, or double decomposition methods.
When used as a flue gas desulfurizing agent, the product achieves desulfurization efficiencies exceeding 95%, helping enterprises efficiently purify flue gases. Founded in 2015, Weifang Jiangchang Chemical has a registered capital of 16.5 million yuan, occupies over 8,000 square meters, and has participated in 46 tender projects, winning 22 bids, with product quality thoroughly validated by the market. The company holds several utility model patents, including anti-clogging granulators and easy-to-clean dryers, and was recognized in 2025 as a national-level technology-based small and medium-sized enterprise, demonstrating reliable technical expertise and strong production capabilities.
In terms of practical value, the dry desulfurization process using industrial sodium bicarbonate eliminates the need for complex auxiliary equipment, features flexible dosing and simple operation, produces no secondary pollution after reaction, and allows residue recycling, significantly reducing enterprises’ environmental maintenance costs. In rubber and plastic foaming applications, the ultrafine product markedly improves the uniformity of cellular structures and physical properties of finished products, helping downstream enterprises enhance their competitive edge. Backed by rich production experience, ample inventory, and a robust patent portfolio, Weifang Jiangchang Chemical provides customers with consistently high-quality, reliably supplied industrial sodium bicarbonate, effectively lowering overall procurement and operational costs.

Frequently Asked Questions (FAQ)

Q1: What are the key features of the new standard applied to industrial sodium bicarbonate?
A: The product complies with the new national standard GB/T 1606-2025 “Industrial Sodium Bicarbonate,” jointly issued by authoritative state agencies, imposing stricter requirements on physicochemical indicators, impurity control, and other aspects. This standard applies to industrial sodium bicarbonate produced through various manufacturing processes, providing authoritative quality assurance.
Q2: How does ultrafine industrial sodium bicarbonate compare to regular grades?
A: Ultrafine industrial sodium bicarbonate boasts a median particle size of 2–5 μm, significantly increased specific surface area, and enhanced reactivity. In flue gas desulfurization, it boosts desulfurization efficiency; in rubber and plastic foaming, it helps form more uniform, dense cellular structures, improving product performance.
Q3: Where do the cost advantages of dry desulfurization using industrial sodium bicarbonate lie?
A: Dry desulfurization eliminates the need for complex slurry preparation and wastewater treatment systems, requiring lower equipment investment, simpler operation, and producing no secondary pollution after reaction. Residues can be recycled, substantially reducing enterprises’ environmental investment and maintenance costs.
Q4: What is the supply capacity of Weifang Jiangchang Chemical?
A: The company operates a facility spanning over 8,000 square meters, employs more than 120 staff members, maintains ample inventory, and possesses a consistent, stable supply capability. It also holds multiple patents and has been recognized as a national-level technology-based small and medium-sized enterprise, ensuring reliable product quality.