Product Description of Sodium Sulfate CAS#7757-82-6
Sodium sulfate (Na₂SO₄), also known as thenardite or salt cake, is a crystalline compound with a melting point of 888°C (1632°F). Naturally occurring as thenardite in regions such as Chile and Spain, it is widely used in the production of paperboard, glass, and freezing mixtures.
The hydrated form, Na₂SO₄·10H₂O, commonly called "Glauber’s salt," is a stable, white, water-soluble compound obtained by heating sodium chloride with sulfuric acid. It finds applications in dyeing, glass manufacturing, and the production of sodium bisulfate.
Sodium sulfate Chemical Properties
| Melting point | 884 °C (lit.) |
| Boiling point | 1700°C |
| density | 2.68 g/mL at 25 °C (lit.) |
| refractive index | 1.484 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | powder (fine) |
| Specific Gravity | 2.68 |
| color | White |
| PH | 5.2-8.0 (50g/l, H2O, 20℃) |
| PH Range | 5.2 - 9.2 |
| Odor | wh. cryst. or powd., odorless, bitter saline taste |
| Water Solubility | 18.5 mg/L |
| λmax | λ: 260 nm Amax: 0.015 λ: 280 nm Amax: 0.015 |
| Sensitive | Hygroscopic |
| Merck | 14,8680 |
| Dielectric constant | 2.7（Ambient） |
| Stability: | Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic. |
| LogP | -1.031 (est) |
| CAS DataBase Reference | 7757-82-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Sodium sulfate(7757-82-6) |
| EPA Substance Registry System | Sodium sulfate (7757-82-6) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 24/25 |
| WGK Germany | 1 |
| RTECS | WE1650000 |
| F | 3 |
| TSCA | Yes |
Product Application of Sodium Sulfate CAS#7757-82-6
Sodium sulfate is widely used as a filler in synthetic detergents. In the paper industry, it serves as a cooking agent in the production of sulfate pulp. The glass industry uses it as a substitute for soda, while the chemical industry employs it as a raw material for producing sodium sulfide, sodium silicate, and other chemical products. In the textile industry, it is applied in the preparation of Vinylon spinning coagulation baths. The pharmaceutical industry utilizes it as a laxative. Additionally, sodium sulfate finds applications in non-ferrous metallurgy and leather processing.
Company Profile
Furuida (Jinan) Chemical Technology Co., Ltd., headquartered in Shandong, China, is a specialized chemical manufacturer involved in R&D, production, sales, and global service. Centered on advanced chemical materials, the company operates on three core values: honesty in business, stringent quality standards, and service as a long-term partnership. Innovation is implemented in practice rather than promoted, and quality is verified throughout each stage of production. This approach has enabled Furuida to open new markets, improve its processes, and win customer confidence.
The company is driven by an experienced team skilled in international trade and technical support, backed by a mature global supply network that combines reliability with fast response. Annual sales have surpassed RMB 600 million, and lasting relationships have been built with more than 5,000 industrial clients across Asia, Europe, Africa, and Oceania. This broad reach has earned strong customer loyalty and wide industry respect.
Furuida's product range includes pharmaceutical intermediates, food additives, electroplating chemicals, water treatment agents, dye auxiliaries, functional new materials, titanium compounds, metal salts, catalysts, and surfactants. These products are used in pharmaceuticals, electronics, coatings, rubber and plastics, specialty chemicals, and water treatment. From this foundation, Furuida provides customers worldwide with consistent, fairly priced products and one-stop solutions that adapt to changing market needs.
