Powdered anhydrous sodium sulfate (Glauber’s salt) is a high-purity white powder and an inorganic chemical raw material. It has stable chemical properties and excellent water solubility, and can be widely used in detergents, glass manufacturing, papermaking, textile dyeing, pharmaceuticals, and other chemical industries.

Sodium Sulfate Anhydrous, Powder Form

Product Overview

Sodium sulfate anhydrous in powder form, commonly known as “yuanmingfen,” is a white, powdery basic inorganic chemical raw material with the chemical formula Na₂SO₄ and a molecular weight of 142.04. Owing to its stable chemical properties, excellent water solubility, and high purity, it serves as an irreplaceable multifunctional auxiliary agent in numerous fields, including detergent production, glass manufacturing, paper pulping, textile dyeing and printing, and pharmaceutical and chemical industries, making it one of the core foundational materials in many industrial processes.

Technical Principles

The core technical principles of sodium sulfate anhydrous in powder form are based on three key chemical characteristics. First is its unusual water solubility: it dissolves rapidly in water, reaching peak solubility at 33°C, with 1 part anhydrous sodium sulfate dissolving in 2 parts water; however, as temperature rises, its solubility decreases, dissolving only in 2.4 parts water at 100°C. This unique dissolution behavior holds particular application value in various specialized industrial processes. Second is its stable chemical nature: it does not readily react with other substances at room temperature, allowing it to serve as an excellent filler and inert carrier, maintaining consistent performance across diverse formulations. Third is its outstanding thermal stability: with a melting point of 884°C and a boiling point of 1700°C, it retains structural integrity even under high-temperature processing conditions; moreover, at elevated temperatures, it can undergo reduction reactions with carbon to produce sodium sulfide, expanding its potential applications in chemical synthesis. Additionally, compared to crystalline granules, the powdered form boasts a larger specific surface area, resulting in faster dissolution and higher reaction efficiency—advantages that become especially pronounced in applications requiring rapid dissolution and uniform dispersion.

Performance Data

In terms of appearance and physicochemical indicators, this product is a white powder, odorless and non-toxic, with a slightly bitter-salty taste. It readily absorbs three molecules of water from humid air, making it sensitive to moisture and thus requiring sealed, dry storage. A 10 g/L aqueous solution has a pH between 5.0 and 8.0, exhibiting neutrality to weak acidity, suitable for meeting process requirements across multiple industries.
Regarding purity and impurity control, the main content of the powdered sodium sulfate anhydrous is ≥99.0%, with loss on ignition ≤0.2%, insoluble matter ≤0.005%, chlorides (expressed as Cl) ≤0.001%, phosphates ≤0.001%, calcium ≤0.002%, iron ≤0.0005%, and heavy metals (expressed as Pb) ≤0.0005%. Such stringent impurity controls ensure stable performance in high-precision processes.
In terms of quality standards, the product complies with GB/T 6009-2003, the national standard applicable to industrial-grade anhydrous sodium sulfate, primarily used as a raw material in dyeing, synthetic detergents, vinylon, dyes, glass, papermaking, and inorganic salt industries; certain specifications may also meet analytical reagent (AR) grade requirements.
As for fineness and whiteness, the powder typically falls within the 60–150 mesh range, with a whiteness index ≥80%, and premium grades exceeding 88%, fully satisfying the rigorous demands of various industries regarding product appearance and dispersibility.

Key Selling Points

First, guaranteed high purity: with a main content of 99%, the product ensures stable performance across diverse applications. Strict impurity controls—insoluble matter ≤0.005%, chlorides ≤0.001%—ensure high batch consistency, fully meeting the exacting requirements of pharmaceuticals and high-end fine chemicals while preventing impurities from interfering with production processes or product quality.
Second, distinct advantages of the powdered form: its large specific surface area, rapid dissolution, and uniform dispersion make it significantly more efficient than granular products in scenarios demanding quick dissolution, such as synthetic detergent formulation or dyeing solidification bath preparation. Moreover, its low hygroscopicity reduces caking during storage, facilitating automated dosing and continuous production, thereby enhancing operational smoothness.
Third, broad applicability: it finds extensive use in synthetic detergents (as a substitute for sodium tripolyphosphate to reduce pollution), glass manufacturing (to lower melting points), paper pulping (as a cooking agent), textile dyeing and printing (for vinylon spinning solidification baths), the pharmaceutical industry (as a salting-out agent), and chemical synthesis, serving as a versatile foundational chemical raw material across multiple sectors.
Fourth, reliable supply and service: supplied by Weifang Jiangchang Chemical, founded on January 9, 2015, the company has years of experience in the chemical industry and a wealth of production expertise. With a registered capital of RMB 16.5 million, located in the Weifang Binhai Economic and Technological Development Zone—rich in saline resources and conveniently connected by transport—the company operates over 8,000 square meters of factory space, employs more than 120 staff, maintains ample inventory, and can ensure a steady, reliable supply of powdered sodium sulfate anhydrous. Furthermore, the company holds several utility patents, including anti-clogging granulators and easy-to-clean dryers, and has been recognized as a national-level science-and-tech SME, ensuring dependable product quality and robust technological capabilities.

Target Customer Groups

Synthetic detergent manufacturers: As a core filler in laundry powder and detergent production, powdered sodium sulfate anhydrous can replace sodium tripolyphosphate, reducing eutrophication pollution in water bodies and serving as an important ingredient for greening and upgrading detergent products.
Glass manufacturers: For those seeking to lower melting temperatures and partially substitute soda ash, this product acts as a fluxing agent, effectively cutting production costs while enhancing glass transparency and uniformity.
Paper mills: In sulfate pulp-making processes requiring cooking agents and pulping aids, this product promotes lignin decomposition, boosts pulp yield, and optimizes pulping efficiency.
Dyeing and textile enterprises: Used to formulate vinylon spinning solidification baths, serve as dyeing auxiliaries, and support bleaching and dyeing processes, improving color uniformity and ensuring fiber-forming quality.
Pharmaceutical and fine chemical companies: For drug companies and chemical R&D institutions needing high-purity salting-out agents, coagulants, and analytical reagents, this high-purity product meets the stringent requirements of precision manufacturing and experimentation.
Inorganic salt chemical enterprises: Those producing downstream products like sodium sulfide and sodium silicate (water glass) using powdered sodium sulfate anhydrous as a raw material—its stable quality ensures efficient and high-quality downstream production.

Application Scenarios

In synthetic detergent production, as a filler and auxiliary agent, it can replace sodium tripolyphosphate, reducing phosphorus-related water pollution while improving detergent flowability and moldability, thus lowering production costs.
In glass manufacturing, when added to glass batches as a fluxing agent, it lowers melting temperatures, enhances glass transparency and uniformity, and partially substitutes soda ash, effectively controlling raw material expenses.
In paper pulping, used as a cooking agent in sulfate pulping processes, it promotes lignin decomposition, increases pulp yield, and optimizes pulping efficiency and pulp quality.
In dyeing and textiles, it’s employed to formulate vinylon spinning solidification baths, controlling fiber-forming quality; in dyeing processes, it serves as a dyeing accelerator and diluent, improving color uniformity; it can also be used in bleaching processes to ensure effective fabric treatment.
In the pharmaceutical industry, it functions as a salting-out agent and coagulant, playing a critical role in drug separation and purification; in analytical chemistry, it serves as a general-purpose reagent, meeting the precision requirements of experimental analysis.
In chemical synthesis, it acts as a raw material for producing sodium sulfide, sodium silicate (water glass), and other chemical products, forming the foundation for numerous inorganic salt-based productions.
Additionally, this product finds applications in leather tanning, corrosion prevention for oil and gas pipelines, metal smelting, surface treatment, fillers, and other fields, covering multiple industrial sub-sectors.

Core Pain Points Addressed

First, addressing the high cost of traditional fluxing agents: With continuously rising soda ash prices in glass manufacturing, powdered sodium sulfate anhydrous can partially replace soda ash as a fluxing agent, effectively reducing raw material costs, enhancing market competitiveness, and helping enterprises alleviate cost pressures.
Second, solving the issue of phosphorus pollution in detergents: Traditional detergents containing sodium tripolyphosphate often cause eutrophication in water bodies; as a green alternative filler, this product effectively lowers phosphorus emissions, helping customers comply with increasingly stringent environmental regulations and achieve a greener product transformation.
Third, tackling the high purity requirements of fine chemicals: Fields such as pharmaceutical synthesis and high-end analytical reagents demand extremely high raw material purity; this product features ultra-low impurity levels (heavy metals ≤0.0005%, iron ≤0.0005%), meeting the strict quality standards of precision processes and preventing impurities from interfering with reaction progress or compromising product quality.
Fourth, resolving the problem of low powder dissolution efficiency: Granular products face limitations in dissolution speed during processes requiring rapid dissolution, impacting production efficiency; in contrast, the powdered form boasts a larger specific surface area and faster dissolution, effectively boosting productivity and streamlining production workflows.

Core Functions of the Product

Filling and shaping function: As a core filler in synthetic detergents, it enhances product moldability and fluidity while reducing production costs, optimizing the physical properties and cost-effectiveness of detergent products.
Fluxing and viscosity-reducing function: In glass manufacturing, it effectively lowers melt viscosity and melting temperatures, improves product transparency and uniformity, and enhances glass quality and production efficiency.
Cooking and pulping function: In papermaking, as a cooking agent, it promotes lignin decomposition, increases pulp yield, and optimizes the economic benefits of pulping processes.
Salting-out and coagulation function: In pharmaceutical and fine chemical production, it serves as a salting-out agent and coagulant, facilitating target product separation and purification, ensuring high-precision product quality.
Solidification bath formulation function: In vinylon spinning processes, it helps formulate solidification baths, controlling fiber-forming quality and safeguarding the stability of textile fibers.
Dehydration and drying function: In organic synthesis, it can act as a dehydrating agent, leveraging its hygroscopic properties to remove moisture from reaction systems, meeting the process requirements of chemical synthesis.

Core Value

Data-backed value: The powdered sodium sulfate anhydrous supplied by Weifang Jiangchang Chemical boasts a main content ≥99.0%, insoluble matter ≤0.005%, chlorides ≤0.001%, and heavy metals ≤0.0005%, meeting the Grade I Class A industrial standard requirements. The product conforms to GB/T 6009-2003, the national standard for industrial-grade anhydrous sodium sulfate, with stable and reliable physicochemical indicators; a melting point of 884°C and a boiling point of 1700°C, demonstrating excellent thermal stability suitable for high-temperature processing; a 10 g/L aqueous solution with a pH between 5.0 and 8.0, neutral in nature and adaptable to diverse industrial applications; a whiteness index ≥80%, with premium grades exceeding 88%; and a fineness ranging from 60 to 150 mesh, satisfying industry demands for product appearance and dispersibility.
Qualifications and factual backing: The product complies with GB/T 6009-2003, the national standard for industrial-grade anhydrous sodium sulfate, applicable to raw materials used in dyeing, synthetic detergents, vinylon, dyes, glass, papermaking, and inorganic salt industries. Founded on January 9, 2015, with a registered capital of RMB 16.5 million, Weifang Jiangchang Chemical is located in the Weifang Binhai Economic and Technological Development Zone—rich in saline resources, providing geographical advantages for stable raw material supply. The company holds several utility patents, including anti-clogging granulators and easy-to-clean dryers, and has been recognized as a national-level science-and-tech SME, ensuring robust production technology that underpins the batch stability and sustained supply capacity of powdered sodium sulfate anhydrous.
Practical application value: In glass manufacturing, it can partially replace soda ash as a fluxing agent, effectively reducing raw material costs; in detergent production, as a green alternative to sodium tripolyphosphate, it helps customers cut phosphorus emissions and meet environmental compliance requirements; its powdered form dissolves quickly and disperses uniformly, delivering significantly higher efficiency than granular products in scenarios demanding rapid dissolution, such as synthetic detergent formulation or dyeing solidification bath preparation, thereby boosting customer production efficiency. Moreover, leveraging its extensive production experience, ample inventory, and patent reserves, Weifang Jiangchang Chemical provides customers with consistently high-quality, reliably supplied powdered sodium sulfate anhydrous, effectively reducing overall procurement costs and supply chain risks.