Product Description
1. Definition
Calcium sulfate is an inorganic compound with the chemical formula CaSO4. It exists in different forms, including anhydrous calcium sulfate and hydrates. Gypsum (CaSO4·2H2O) and plaster of Paris (CaSO4·0.5H2O) are two common hydrate forms. These compounds are white solids, odorless, and have low solubility in water. Their stable chemical properties make them useful in various industries.
2. Production Methods
- Natural Extraction: Mined from natural deposits of gypsum or anhydrite, which are abundant in many regions.
- Chemical Reaction: Produced by reacting calcium - containing compounds, like calcium carbonate (CaCO3) or calcium hydroxide (Ca(OH)2), with sulfuric acid (H2SO4). For example, CaCO3 + H2SO4 = CaSO4 + CO2 + H2O. It can also be a by - product in phosphate fertilizer manufacturing and flue gas desulfurization processes.
3. Storage
- Environmental Conditions: Store in a dry, cool place, as exposure to excessive moisture can change its hydrate form.
- Container Requirements: Use tightly - sealed containers to prevent contamination from other chemicals and ensure the product's stability.
4. Market Information
The global calcium sulfate market is growing steadily. Major producers are located in regions with rich natural resources. The market price depends on factors like purity, form, and production scale. Higher - purity grades are in greater demand for industries requiring precise specifications.
5. Downstream Industries
- Construction: Used in drywall, plaster, and cement production to enhance strength and regulate setting time.
- Agriculture: Applied as a soil conditioner to improve soil structure and provide essential nutrients (calcium and sulfur).
- Food: Functions as a dough conditioner, firming agent, and anti - caking agent in food products.
- Industry: Serves as a filler in plastics, rubber, and paper, and as a component in adhesives and paints.
Detailed Photos


Product Parameters
Testing ltem |
Standard |
Result |
Color |
White |
White |
Appearance |
Powder |
Powder |
CaSO4 /% |
≥98.0 |
99.5 |
Pb /% |
≤0.0002 |
0.0001 |
As /% |
≤0.0002 |
0.0001 |
F/% |
≤0.0050 |
0.002 |
Se /% |
≤0.0030 |
0.002 |
250°C water lose /% |
≤1.5 |
0.725 |
Application
Construction: Forms drywall, plaster, and cement additives. Gypsum panels are fire - resistant, while plaster of Paris creates molds. In cement, it controls setting time.
Agriculture: As a soil conditioner, it improves structure, supplies calcium and sulfur, and reduces soil salinity, boosting crop growth.
Food: Acts as a dough conditioner, firming agent, and anti - caking agent, enhancing texture in baked goods and preventing clumping in powders.
Industry: Used as a filler in plastics, rubber, and paper, and in adhesives to control viscosity.
Packaging & Shipping
Packaging:
25kg bag--27tons/1FCL without pallet
1000kg bag--25tons/1FCL without pallet
Shipping:
We mainly use MSC, Maersk, CMA CGM, COSCO, HPL, ONE, YML, WHL, PIL and ZIM.
Certifications

Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!


FAQ
Q1: Is this product safe to handle?
A: Yes, it is generally considered safe and non-toxic under normal handling conditions. However, we recommend wearing gloves and a mask to avoid prolonged skin or inhalation exposure, especially in large-scale use.
Q2: What is the shelf life of this product?
A: The shelf life is 2 years when stored in a cool, dry, and well-ventilated area. It should be kept away from moisture to prevent caking or decomposition.
Q3: What packaging options are available?
A: Standard packaging includes 25kg or 50kg plastic woven bags with inner liners. We also offer jumbo bags and customized bag marks according to your requirements.
Q4: Can you provide documents such as COA, MSDS, or TDS?
A: Absolutely. We can provide Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), Technical Data Sheet (TDS), and other documents as needed for customs or technical review.
Q5: What are your payment terms?
A: We accept T/T (30% deposit, 70% before shipment), L/C, and other negotiable terms based on order size and customer relationship.
Q6: What is your lead time and delivery port?
A: Normally, delivery time is within 10-15 working days after deposit. Our main loading ports are Qingdao, Shanghai, and Tianjin, China.
Q7: Is the product compliant with REACH or other certifications?
A: Yes, our product can comply with REACH regulations upon request. We also have ISO certification and can assist with third-party inspection if needed.