Sodium sulfate anhydrous (Glauber’s salt) with a purity of 99% is a high-purity white crystalline powder, chemically stable and highly soluble in water. It conforms to the GB/T 9853-2008 standard and is widely used in industries such as glass manufacturing, detergents, papermaking, textile dyeing, and pharmaceuticals and chemical engineering.

Sodium Sulfate Anhydrous

Product Overview

Sodium sulfate anhydrous with a purity of 99%, commonly known as “Yuanming Powder,” is a high-purity, white, crystalline inorganic salt. Its chemical formula is Na₂SO₄, and its molecular weight is 142.04. With stable chemical properties, excellent water solubility, and versatile application characteristics, this product has become an indispensable basic raw material in fields such as glass manufacturing, detergent production, paper pulping, textile dyeing and printing, and pharmaceutical and chemical industries. The product complies with the national standard GB/T 9853-2008 and the industry-grade analytical reagent (AR) standard, with a main content ≥99.0% and stringent impurity control, meeting the rigorous requirements of high-end sectors like fine chemicals and pharmaceutical synthesis.

Technical Principles and Physicochemical Properties

The core application value of 99% sodium sulfate anhydrous lies in its unique physicochemical characteristics. In terms of water solubility, it exhibits an unusual dissolution behavior: at 33°C, its solubility reaches a peak ratio of 1:2; however, as temperature rises beyond this point, its solubility decreases, dropping to only 2.4 parts water per part salt at 100°C. This property can play a special role in certain industrial processes. Chemically, it is relatively inert under normal conditions, making it an excellent filler and inert carrier. It also demonstrates exceptional thermal stability, with a melting point of up to 884°C and a boiling point as high as 1700°C, ensuring structural stability even in high-temperature processing environments—ideal for applications such as glass melting.

High purity is one of the key strengths of this product. Its 99% purity results in extremely low levels of impurities: analytical-grade water-insoluble matter ≤0.005%, chloride ≤0.001%, calcium ≤0.002%, and heavy metals ≤0.0005%, fully satisfying the stringent purity requirements of fine chemical and pharmaceutical synthesis applications. Additionally, it appears as a white crystalline powder or colorless transparent crystals, odorless and tasteless with a slightly bitter-salty flavor. It readily absorbs three molecules of water from humid air, making it sensitive to moisture; therefore, it must be stored sealed and dry. A 10 g/L aqueous solution has a pH between 5.0 and 8.0, ranging from neutral to weakly acidic, suitable for various industrial process needs.

Performance Parameters

1. Main content: ≥99.0%
2. Loss on ignition: ≤0.2%
3. Water-insoluble matter: ≤0.005%
4. Chloride (as Cl): ≤0.001%
5. Phosphate: ≤0.001%
6. Total nitrogen: ≤0.0005%
7. Calcium: ≤0.002%
8. Potassium: ≤0.01%
9. Iron: ≤0.0005%
10. Heavy metals (as Pb): ≤0.0005%
11. Density: 2.68 g/mL (at 25°C)
12. Melting point: 884°C
13. Boiling point: 1700°C
14. pH of 10 g/L aqueous solution: 5.0–8.0
15. Standards met: National Standard GB/T 9853-2008 and Analytical Reagent (AR) grade standards

Key Selling Points

1. High-Purity Assurance: With a main content of 99%, the product delivers consistent performance across diverse applications. Strict impurity control ensures exceptional batch-to-batch consistency, meeting the demanding purity requirements of pharmaceuticals and high-end fine chemicals while preventing impurities from interfering with production processes and compromising final product quality.
2. Wide Range of Applications: This sodium sulfate anhydrous is suitable for use in detergent synthesis, glass manufacturing, paper pulping, textile dyeing and printing, the pharmaceutical industry, and chemical synthesis. It serves as a fluxing agent, filler, cooking agent, and salting-out agent, making it a versatile foundational chemical raw material across multiple industries.
3. Flexible Product Forms: Typically supplied in 25 kg woven bags, but can also be customized according to customer specifications to accommodate different industry-specific warehousing and usage preferences, minimizing inconvenience during storage and handling.
4. Reliable Supply and Service: Provided by Weifang Jiangchang Chemical, established in 2015, with years of experience in the chemical sector. The company operates a 8,000+ square meter facility employing over 120 staff members, maintains ample inventory, and ensures continuous, stable supply. It holds several utility model patents, including anti-clogging granulators and easy-to-clean dryers, and was recognized as a national-level technology-based SME in 2025, guaranteeing strong technical capabilities and product quality.

Target Customer Groups

1. Glass Manufacturers: For glass producers seeking to lower melting temperatures and reduce costs by substituting some soda ash, 99% sodium sulfate anhydrous serves as an important fluxing agent, effectively enhancing glass transparency and uniformity.
2. Detergent Producers: As a core filler in synthetic detergent formulations, this product can replace sodium tripolyphosphate, reducing eutrophication risks in water bodies while improving detergent flowability and shaping properties.
3. Paper Mills: In sulfate pulp production, where cooking agents and pulping aids are required, this product promotes lignin decomposition and increases pulp yield.
4. Textile and Printing Companies: Used to formulate vinylon spinning coagulation baths and as a dyeing aid, it enhances dyeing uniformity and controls fiber formation quality.
5. Pharmaceutical and Fine Chemical Enterprises: For companies requiring high-purity salting-out agents, coagulants, and analytical reagents, its superior purity meets the exacting demands of drug separation, purification, and precision synthesis.
6. Inorganic Salt Chemical Companies: Those producing downstream products such as sodium sulfide and sodium silicate using sodium sulfate anhydrous as a raw material—stable quality ensures consistent downstream production.

Core Application Scenarios

1. Glass Manufacturing: Added to glass batches as a fluxing agent, it lowers melting temperatures, reduces energy consumption, and improves glass transparency and uniformity. It can also partially replace soda ash, effectively cutting raw material costs and boosting market competitiveness.
2. Synthetic Detergent Production: As a filler and auxiliary agent in detergents, replacing sodium tripolyphosphate, it reduces phosphorus pollution in water bodies, helping customers comply with increasingly stringent environmental regulations while improving detergent fluidity and shaping properties, thus increasing production efficiency.
3. Paper Pulping: Used as a cooking agent in sulfate pulping processes, it accelerates lignin breakdown, boosts pulp yield, minimizes raw material waste during pulping, and enhances overall production efficiency.
4. Textile and Printing: Employed in vinylon spinning coagulation baths to precisely control fiber formation quality; in dyeing processes, used as a dyeing promoter and diluent to improve dyeing uniformity, reduce defects, and enhance textile quality.
5. Pharmaceutical Industry: Acts as a salting-out agent and coagulant in drug separation and purification processes, aiding in the extraction of high-purity target compounds; in oral dosage forms, serves as a laxative, meeting formulation requirements.
6. Chemical Synthesis Raw Material: As a foundational ingredient for producing sodium sulfide, sodium silicate (water glass), and other chemical products, providing stable upstream support to the inorganic salt chemical industry.
7. Other Applications: Can also be applied in ceramic glazes, refrigerant mixtures, dye diluents, metal smelting fluxes, analytical chemistry reagents, and more, adapting to diverse industrial production needs.

Addressing Core Industry Pain Points

1. Solving the High Cost Problem of Traditional Fluxing Agents: With continuously rising soda ash prices in glass manufacturing, 99% sodium sulfate anhydrous can partially substitute soda ash as a fluxing agent, effectively reducing raw material procurement costs and helping glass manufacturers enhance their market competitiveness.
2. Tackling Phosphorus Pollution in Detergents: Traditional detergents containing sodium tripolyphosphate often cause eutrophication in water bodies. This sodium sulfate anhydrous, as a green alternative filler, significantly reduces phosphorus emissions, enabling detergent producers to meet environmental regulations and avoid penalties.
3. Meeting the High Purity Demands of Fine Chemicals: Fields like pharmaceutical synthesis and high-end analytical reagents require exceptionally pure raw materials; excessive impurities in ordinary supplies can interfere with reactions and compromise product quality. This product boasts extremely low impurity levels (heavy metals ≤0.0005%, iron ≤0.0005%), fully satisfying the stringent purity requirements of precision processes.
4. Addressing Poor Raw Material Storage Stability: Being sensitive to humidity, 99% sodium sulfate anhydrous easily absorbs moisture and deteriorates. Leveraging extensive experience in chemical product storage and logistics, Weifang Jiangchang Chemical provides professional packaging and storage advice, ensuring product quality remains stable throughout storage and transportation, thereby avoiding production losses caused by material degradation.

Core Functionalities of the Product

1. Fluxing and Viscosity-Reducing Functions: In glass manufacturing and ceramic glaze production, it effectively lowers melt viscosity, reduces melting temperatures, cuts energy consumption, and simultaneously improves product transparency and uniformity, elevating finished goods quality.
2. Filling and Shaping Functions: As a core filler in synthetic detergents, it enhances product shaping and fluidity, facilitating easier processing, molding, and packaging.
3. Cooking and Pulping Functions: In papermaking, it acts as a cooking agent, promoting lignin decomposition, increasing pulp yield, lowering pulping costs, and improving overall production efficiency.
4. Salting-Out and Coagulating Functions: In pharmaceutical and fine chemical production, it serves as a salting-out agent and coagulant, facilitating the separation and purification of target compounds, thereby enhancing product purity and production efficiency.
5. Coagulation Bath Formulation Function: In vinylon spinning processes, it helps formulate coagulation baths, precisely controlling fiber formation quality and ensuring textile quality stability.

Core Value Supported by Data

Weifang Jiangchang Chemical’s 99% sodium sulfate anhydrous, with a main content ≥99.0%, water-insoluble matter ≤0.005%, chloride ≤0.001%, and heavy metals ≤0.0005%, fully meets the requirements of analytical reagent-grade standards. The product complies with the national standard GB/T 9853-2008, exhibiting stable and reliable physicochemical indicators. Its melting point of 884°C and boiling point of 1700°C demonstrate excellent thermal stability, making it suitable for high-temperature processing scenarios such as glass melting. Its aqueous solution has a pH between 5.0 and 8.0, remaining neutral without causing acid-base interference in production processes, thus accommodating diverse industrial application needs.

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. In 2025, it was certified as a national-level technology-based small and medium-sized enterprise, holding several utility model patents—including anti-clogging granulators and easy-to-clean dryers—and two software copyrights. With robust production technology, the company provides solid assurance for batch-to-batch stability and sustained supply capacity.

In practical applications, this sodium sulfate anhydrous can partially replace soda ash in glass manufacturing, effectively reducing raw material costs; in detergent production, it serves as a green alternative to sodium tripolyphosphate, helping customers cut phosphorus emissions and comply with environmental regulations. Located in the Weifang Binhai Economic and Technological Development Zone, the company benefits from abundant saline resources and convenient transportation, giving it clear advantages in raw material procurement and logistics distribution, ensuring timely product delivery and effectively lowering customers’ overall procurement costs and supply chain risks.