I. Basic Product Information

1.1 Core Physicochemical Parameters

• Chinese Name: Industrial-grade Sodium Acetate, also known as Industrial Sodium Acetate
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• English Name：Industrial Sodium Acetate
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• CAS Number: Anhydrous 127-09-3; Trihydrate 6131-90-4
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• Molecular formula: Anhydrous sodium acetate CH₃COONa; Trihydrate sodium acetate CH₃COONa·3H₂O
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• Molecular weight: Anhydrous form 82.03; Trihydrate form 136.08
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• Appearance and properties: Sodium acetate trihydrate is colorless, transparent or white crystalline particles with no obvious odor, and is prone to efflorescence in dry air; anhydrous sodium acetate is a white powder with strong hygroscopicity
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• Solubility: Easily soluble in water, slightly soluble in ethanol, insoluble in ether, and the aqueous solution is weakly alkaline
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• Melting point: Sodium acetate trihydrate 58℃, loses crystal water at 123℃ and converts to anhydrous form; anhydrous sodium acetate 324℃
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• Density: The relative density of the trihydrate is 1.45, and the relative density of the anhydrous form is 1.528
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• Stability: Stable under normal temperature and pressure; avoid mixing with strong acids and strong oxidants. It is stable when heated and has no risk of flammability or explosion.

• 1.2 Product Classification

  Industrial-grade sodium acetate is mainly divided into two categories, which are suitable for the needs of different industrial scenarios. The specific classifications and characteristics are as follows:

  
  

  • Sodium acetate trihydrate (mainstream industrial grade): content 58%-60%, in crystalline form, weak hygroscopicity, easy to store, is the first choice for sewage treatment carbon source, with extremely high cost performance, and has the largest circulation in the market
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  • Anhydrous Sodium Acetate (High-purity Industrial Grade): Content ≥ 98%, in powder form, highly hygroscopic, high purity, suitable for high-end industrial scenarios such as fine chemicals, printing and dyeing, and pharmaceutical intermediates
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  • Liquid Sodium Acetate (Customized Version): Content 20%-30%, liquid form can be directly dosed without dissolution, suitable for automatic dosing systems in sewage treatment plants, reducing manual operations
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  • II. Product Usage Characteristics

    2.1 Core Application Section

    2.1.1 Sewage Treatment Field (Core Application)

    Industrial-grade sodium acetate is a high-quality external carbon source for biological nitrogen and phosphorus removal in municipal sewage and industrial wastewater. It replaces traditional methanol and glucose, solving the problems of insufficient carbon sources and low nitrogen removal efficiency during the denitrification stage of sewage treatment. Compared with methanol, sodium acetate has no risk of flammability or explosion and is safer. Compared with glucose, it has a faster denitrification rate, lower sludge production, and no secondary pollution. It can quickly provide nutrients for denitrifying bacteria, improve the total nitrogen removal rate, and is suitable for various sewage treatment systems such as domestic sewage, printing and dyeing wastewater, chemical wastewater, and food processing wastewater. It is particularly suitable for wastewater treatment scenarios with low temperatures and low C/N ratios. It has a significant effect on cultivating and growing bacteria, quickly activates sludge activity, and shortens the system debugging cycle.

    
    

    

    2.1.2 Printing and Dyeing Textile Field

    It is used as a printing and dyeing auxiliary and buffer, regulating the pH value of the dye liquor during the dyeing and finishing process, stabilizing the dyeing technology, improving the uniformity of dye uptake, preventing problems such as color patterns and color differences, and is especially suitable for acid dye and direct dye dyeing processes. At the same time, it can be used as a mordant to enhance the binding force between fibers and dyes, improve the color fastness of fabrics, enhance the hand feel of fabrics, reduce the chromaticity and pollutant residues in printing and dyeing wastewater, and is suitable for the printing and dyeing processing of various fabrics such as cotton, linen, and chemical fibers.It is used as a printing and dyeing auxiliary and buffer, regulating the pH value of the dye liquor during the dyeing and finishing process, stabilizing the dyeing technology, improving the uniformity of dye uptake, preventing problems such as color patterns and color differences, and is especially suitable for acid dye and direct dye dyeing processes. At the same time, it can be used as a mordant to enhance the binding force between fibers and dyes, improve the color fastness of fabrics, enhance the hand feel of fabrics, reduce the chromaticity and pollutant residues in printing and dyeing wastewater, and is suitable for the printing and dyeing processing of various fabrics such as cotton, linen, and chemical fibers.

    
    

    

    2.1.3 Electroplating Industry

    It is used as an electroplating buffer and complexing agent, regulating the pH value of the electroplating solution, stabilizing electroplating process parameters, improving the flatness, smoothness and adhesion of the electroplating layer, preventing the precipitation of metal ions during electroplating, enhancing the quality of the plating layer, and is suitable for conventional electroplating processes such as zinc plating, nickel plating, and chromium plating. At the same time, it can reduce the difficulty of electroplating wastewater treatment and reduce heavy metal residues.

    
    

    

    2.1.4 Chemical Synthesis Field

    As a raw material for organic synthesis and a chemical intermediate, it is used in the preparation of products such as acetate esters, pharmaceutical intermediates, and chemical catalysts; it can also be used as a rubber vulcanization accelerator and plastic stabilizer to improve the processing performance and service life of chemical products; in chemical reactions, it acts as a pH regulator and buffer, ensuring the stability of the reaction system, and improving the reaction conversion rate and product purity.

    
    

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    2.2 Core Feature Advantages of the Product

    1. Environmental protection and no residue: Easily biodegradable, no toxic residues, will not cause secondary pollution to water bodies and soil after use, and meets environmental protection control requirements
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    3. Safe to use: It is non-flammable and non-explosive, has no pungent odor, is safe to store and transport at room temperature, is easy to operate, and requires no special protection
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    5. Stable performance: The aqueous solution is weakly alkaline and stable, with small pH fluctuations. It is compatible with various industrial process systems and is not easy to decompose or deteriorate.
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    7. Excellent solubility: It can dissolve quickly in cold water without caking or precipitation. It is convenient to add and compatible with automatic dosing equipment.
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    9. High cost performance: Raw materials are easily available, production costs are low. Compared with similar products, it has lower dosage, better effect, and lower comprehensive use cost.
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    11. Strong adaptability: The content and form can be customized according to different industrial scenarios. Both solid and liquid forms are available to meet diverse needs.

  • III. Product Specification Parameters (Rule Parameters)

    Industrial-grade sodium acetate is divided into various specifications according to its form and content. The following are the mainstream specifications and core parameters in the industry, and customized production can be carried out according to customer needs:

    
    

    Product Model	Appearance Form	Content of Sodium Acetate	Applicable Scenarios	Packaging specifications
    Industrial Sodium Acetate Trihydrate (Standard Version)	White crystalline granules	≥58%-60%	Municipal sewage treatment, industrial wastewater treatment, conventional printing and dyeing auxiliaries	25kg woven bag, 50kg woven bag, 1000kg ton bag
    Industrial Anhydrous Sodium Acetate (High Purity Version)	white powder	≥98%、≥99%	Fine chemicals, high-end electroplating, pharmaceutical intermediates	25kg woven bag with inner plastic lining
    Liquid Sodium Acetate (Liquid Version)	Colorless transparent liquid	20%、25%、30%	Automatic dosing in sewage treatment plants, emergency carbon source supplementation	Transportation by ton barrels and tank trucks

    3.1 Core Physical Parameters

    • Aqueous solution pH value (5% concentration, 25℃): 7.5-9.0
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    • Water-insoluble substances: ≤0.05%
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    • Moisture content: Sodium acetate trihydrate ≤ 2.0%; Anhydrous sodium acetate ≤ 1.0%
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    • Bulk density: trihydrate crystal type 0.8-1.2g/cm³; anhydrous powder type 1.2-1.5g/cm³
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    • Solubility: At 20°C, 32g of sodium acetate trihydrate can be dissolved in 100g of water, with a fast dissolution rate and no residue.

    IV. Product Quality Standards

    This product strictly complies with the industry standard HG/T 5959-2021 "Industrial Sodium Acetate" and the group standard T/CASMES XXX—2022, and also meets the control requirements for environmentally friendly industrial raw materials. The specific quality indicators are as follows:

    4.1 Quality indicators of industrial sodium acetate trihydrate (mainstream model)

    Testing items	Indicators for Premium Grade Products	Indicators for Qualified Products	Detection Methods
    Content of Sodium Acetate (CH₃COONa·3H₂O)	≥60%	≥58%	Perchloric acid titration method
    pH value (50g/L aqueous solution, 25℃)	7.5-9.0	7.5-9.2	pH meter determination method
    Water-insoluble substances	≤0.03%	≤0.05%	Gravimetric method
    Chloride (calculated as Cl⁻)	≤0.035%	≤0.05%	Silver nitrate titration method
    Sulfate (calculated as SO₄²⁻)	≤0.03%	≤0.05%	Barium chloride turbidimetry method
    Iron (Fe) content	≤0.002%	≤0.003%	Spectrophotometry
    Heavy metals (calculated as Pb)	≤0.001%	≤0.002%	Atomic Absorption Spectrophotometry
    Moisture	≤1.5%	≤2.0%	Loss on drying method

    4.2 Quality Index of Anhydrous Industrial Sodium Acetate (High Purity Grade)

    Testing items	Index Requirements	Detection Method
    Sodium acetate content (CH₃COONa)	≥98.5%	Perchloric acid titration method
    pH value (50g/L aqueous solution, 25℃)	7.0-9.0	pH meter determination method
    Water-insoluble substances	≤0.02%	Gravimetric method
    Chloride (calculated as Cl⁻)	≤0.01%	Silver nitrate titration method
    Iron (Fe) content	≤0.001%	Spectrophotometry
    Moisture content	≤1.0%	Loss on drying method

    4.3 Quality Indexes of Liquid Sodium Acetate

    • Sodium acetate content: 20%±1%, 25%±1%, 30%±1%
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    • Appearance: colorless and transparent, no suspended matter, no precipitation
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    • pH value: 7.5-9.0
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    • Water-insoluble substances: ≤0.01%
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    • Heavy metal content: ≤0.0005%

    4.4 Inspection Rules

    1. Products are grouped into batches by the same production lot and same specification, with each batch not exceeding 50 tons. Before leaving the factory, products must pass the inspection by the quality control department and be accompanied by a product certificate of conformity to be released.
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    3. Sampling shall be carried out in accordance with GB/T 6678 General Rules for Sampling of Chemical Products. Random sampling shall be conducted, and the samples shall be mixed uniformly before being submitted for inspection.
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    5. Factory inspection items: appearance, content, pH value, water-insoluble substances; Type inspection includes all quality indicators and shall be carried out at least once a year
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    7. If any item in the inspection result is unqualified, a double sampling re-inspection can be conducted. If the re-inspection is still unqualified, the batch of products shall be judged as unqualified.

    V. Packaging, Transportation and Storage

    5.1 Packaging Specifications

    • Solid products: Packed in polypropylene woven bags lined with polyethylene plastic film, with tight sealing to prevent moisture and leakage. Regular specifications include 25kg, 50kg, and 1000kg ton bags. The bag is marked with product name, specification, content, production date, batch number, manufacturer, execution standard, and moisture-proof label.
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    • Liquid products: Transported in food-grade PE ton barrels and tank trucks with tight sealing to prevent leakage and volatilization. The ton barrels are marked with product concentration and protection requirements.
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    5.2 Transportation Requirements

    • Transportation of regular goods, non-dangerous goods, can be carried out by road, railway, or waterway.Transportation of regular goods, non-dangerous goods, can be carried out by road, railway, or waterway.
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    • During transportation, it should be covered to prevent exposure to sunlight, rain, and moisture, and should not be transported together with strong acids, strong oxidants, toxic and harmful substances.
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    • During the loading and unloading process, handle with care, avoid damage to the packaging, and prevent the product from spilling, absorbing moisture, and caking.

    5.3 Storage Conditions

    • Store in a cool, dry, and well-ventilated warehouse, away from fire sources and heat sources, and room temperature storage is sufficient.
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    • Avoid storing in the open air. The ground should be covered with pallets, and a distance from the walls should be maintained to prevent moisture and weathering.
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    • It is strictly prohibited to store or place together with acidic substances, strong oxidants, and toxic and harmful chemicals.
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    • Shelf life: Solid products can be stored sealed for 12 months; liquid products can be stored sealed for 6 months, and should be used as soon as possible after opening.

    VI. Safety Prevention and Emergency Handling

    6.1 Operational Precautions

    • The product has low toxicity and no irritation. No special protection is required during operation, but it is recommended to wear a mask and gloves to avoid inhaling dust.
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    • The operating area should be well-ventilated. Spilled products should be cleaned up promptly to avoid accumulation.
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    • During the dissolution operation, slowly add the product to water, stir evenly, and avoid excessive local concentration.

    6.2 Emergency Handling

    • Skin contact: Rinse immediately with plenty of water. It is non-irritating and no special treatment is required.
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    • Eye contact: Rinse immediately with plenty of water for 10-15 minutes, and seek medical attention promptly if discomfort occurs.
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    • Accidental ingestion: Drink plenty of warm water, induce vomiting, and seek medical attention promptly
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    • Product spillage: After cleaning and collecting, repackage it, or rinse and dilute it with plenty of water; there is no environmental risk.

    6.3 Environmental Protection Tips

    The product is easily biodegradable. Waste products can be disposed of as general industrial solid waste, or directly dissolved and diluted before being discharged into the sewage treatment system. It is strictly prohibited to discard them at will to avoid environmental pollution; liquid products should be prevented from being directly discharged into natural water bodies to prevent fluctuations in the pH value of the water.

    VII. Summary of Product Application Scope

    Industrial-grade sodium acetate, with its stable physical and chemical properties, excellent performance, and environmental safety features, is widely used in various industries such as municipal sewage treatment plants, industrial wastewater treatment stations, printing and dyeing textile factories, electroplating processing plants, fine chemical enterprises, and concrete production enterprises. It is an indispensable basic chemical raw material in industrial production. The product has a complete range of specifications and meets quality standards, which can meet the customized needs of different customers. It combines practicality and economy, making it the preferred raw material for various industrial scenarios.