Products Description
Sodium sulfate (CAS No. 7757‑82‑6, molecular formula: Na₂SO₄), alternatively named thenardite or salt cake, is a crystalline inorganic compound with a melting point of 888 °C (1632 °F). Its natural mineral form, thenardite, occurs in deposits across Chile and Spain. It serves as a key raw material for manufacturing paperboard, glass and freezing mixtures.
Its hydrate form, Na₂SO₄·10H₂O, commonly referred to as Glauber's salt, is a white, water‑soluble solid. It can be synthesized by reacting sodium chloride with sulfuric acid, and finds practical uses in textile dyeing, glass production, and the preparation of sodium bisulfate.
Products Chemical Properties
| Melting point | 884 °C (lit.) |
| Boiling point | 1700°C |
| bulk density | 1400-1600kg/m3 |
| 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 |
| pka | 4.76 |
| form | powder (fine) |
| color | White |
| Specific Gravity | 2.68 |
| Odor | wh. cryst. or powd., odorless, bitter saline taste |
| PH | 5.2-8.0 (50g/l, H2O, 20℃) |
| PH Range | 5.2 - 9.2 |
| 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 |
| HS Code | 28331100 |
| Hazardous Substances Data | 7757-82-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Products Application
Sodium sulfate boasts diversified industrial applications. It is widely adopted as a filler in synthetic detergent formulations.
Within the paper sector, it functions as a cooking agent for sulfate pulp production. The glass industry uses it as an alternative to soda ash. In chemical manufacturing, it acts as a raw material to produce sodium sulfide, sodium silicate and other chemical compounds.
For textile processing, it is added to coagulation baths for vinylon fiber spinning. The pharmaceutical field applies it as a laxative agent. Furthermore, it finds applications in non-ferrous metallurgy and leather processing.
Company Profile
Furuida (Jinan) Chemical Technology Co., Ltd., headquartered in Shandong, China, is a modern fine chemical enterprise that combines R&D, production, sales, and global services. It focuses on new chemical materials and follows values of integrity, quality, and customer-first service. Continuous innovation and strict quality management drive its international growth, operational standards, and brand reputation.
Supported by an experienced foreign trade and technical support team, a mature global supply network, and resilient supply chain capabilities, Furuida generates annual sales over RMB 600 million and serves more than 5,000 industrial clients. Its business spans Asia, Europe, Africa, and Oceania.
The product range covers pharmaceutical intermediates and raw materials, food additives, electroplating chemicals, water treatment agents, dye auxiliaries, functional materials, titanium compounds, metal salts, catalysts, and surfactants. These are used in pharmaceuticals, electronics, coatings, rubber and plastics, fine chemicals, and water treatment. Furuida provides reliable, cost-effective solutions and complete one-stop services to global partners.
