Sodium Sulfate CAS#7757-82-6
Industrial Versatility: Sodium sulfate is crucial in various industrial processes, including the production of glass, paperboard, and chemical manufacturing.
Chemical Process Control: It plays an essential role in controlling pH and solubility properties in chemical processes, making it indispensable for many applications.
Hydrated Form Benefits: Glauber's salt (Na₂SO₄·10H₂O) is widely used in dyeing, glass manufacturing, and the preparation of sodium bisulfate.
Natural Occurrence: Sodium sulfate occurs naturally in regions like Chile and Spain, making it an abundant resource for industrial use.
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 sodium sulfate, in its anhydrous form as thenardite, can be found in regions such as Chile and Spain. It plays a vital role in several industrial processes, including the production of paperboard, glass, and freezing mixtures.
The hydrated form, Na₂SO₄·10H₂O, commonly referred to as Glauber's salt, is a white, water-soluble solid formed by heating a mixture of sodium chloride and sulfuric acid. Glauber's salt is widely utilized in dyeing, the manufacturing of glass, and in the preparation of sodium bisulfate. Additionally, sodium sulfate is essential in chemical processes that require specific pH control or solubility properties. Its versatility makes it a key component in various applications, contributing to industries like textiles, chemical production, and materials science.
Parameters
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 |
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 |
