Sodium sulfate #CAS7757-82-6
Sodium Sulfate(7757-82-6), Na2S04, also known as thenardite and salt cake, is a crystalline compound that melts at 888°C (1632°F). Sodium Sulfate is found in natural form(thenardite) in Chile and Spain. It is used in the manufacture of paperboard, glass,and freezing mixtures. The hydrate, Na2S04·10H20, also known as "Glauber's salt," is a white water-soluble solid formed by heating Sodium chloride and sulfuric acid. It is used in dyeing,manufacturing glass,and in the preparation of sodium bisulfate.
Application of Sodium sulfate
It can be mainly used as the filler of synthetic detergent. Paper industry applies it for the cooking agent during the manufacture of sulfate pulp. Glass industry uses it as substitute of soda. Chemical industry applies it as the raw material for the manufacturing of sodium sulfide, sodium silicate and other chemical products. Textile industry applies it for the formulation of Vinylon spinning coagulation bath. The pharmaceutical industry applies it as laxatives. It can also be used in non-ferrous metallurgy and leather.Sodium Sulfate is the salt of sulfuric acid that is readily soluble in water and exists as crystals or crystalline powder. it is used in cara- mel production.Used in kjeldahl nitrogen determination; drying agent .Sodium sulfate is a filler in the manufacturing of synthetic detergents and soaps and a laboratory reagent. It may enhance the irritant action of certain detergents.
| Sodium sulfate Chemical Properties |
| Melting point | 884 °C (lit.) |
| Boiling point | 1700°C |
| density | 2.68 g/mL at 25 °C (lit.) |
| bulk density | 1400-1600kg/m3 |
| 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) |
| pka | 4.76 |
| 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 |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.015 λ: 280 nm Amax: 0.015 |
| Merck | 14,8680 |
| Dielectric constant | 2.7（Ambient） |
| Stability: | Stable. Incompatible with strong acids, aluminium, magnesium, strong bases. Hygroscopic. |
| Cosmetics Ingredients Functions | BULKING VISCOSITY CONTROLLING |
| InChI | 1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2 |
| InChIKey | PMZURENOXWZQFD-UHFFFAOYSA-L |
| SMILES | [Na+].[Na+].[O-]S([O-])(=O)=O |
| 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 | TSCA listed |
| HS Code | 28331100 |
| Storage Class | 13 - Non Combustible Solids |
| Hazardous Substances Data | 7757-82-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
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