Brand Name: SGONEK
Price: $20 -$300/Kilogram
Place of Origin: Shaanxi, China
Certification: ISO FDA SG COA MSDS
Grade: Food Grade, Industrial Grade
Payment Terms: T/T, Western Union, MoneyGram
| Product Name: | sodium sulphate anhydrous | Cas No.: | 7577-83-7 |
| Molecular Formula: | Na2SO4 | Purity: | 98% Min |
| Brand Name: | SGONEK | Certification: | ISO FDA SG COA MSDS |
Physical and chemical properties:
White crystalline or powder form;
triangular prism crystal shape;
alkaline water solution with pH at 9 – 9.5;
The highest water solubility is about 28% with temperature at 33.4°C;
When exposed to air, it is oxidized to form sodium sulfate;
When heated to high temperature, it decomposes to form sodium sulfide;
Density: 2.633(15.4°C);
Refractive Index: 1.565;
Molecular Weight: 126.04.
It most commonly occurs as a crystallineheptahydrate, which readily effloresces to form a white powder,the monohydrate. Pure sodium carbonate is a white, odorless powder that is hygroscopic (absorbs moisture from the air), has an alkaline taste, and forms a strongly alkaline water; solution. Sodium carbonate is well known domestically for its everyday use as a water softener.
It can be extracted from the ashes of many plants growing in sodium-rich soils, such as vegetation from the Middle East, kelp from Scotland and seaweed from Spain. Because the ashes of these sodiumrich plants were noticeably different from ashes of timber (used to create potash), they became known as "soda ash";
It is synthetically produced in large quantities from salt (sodium chloride) and limestone by a method known as the Solvay process.
|
Item |
USP28 |
|
Assay |
99.0~100.5% |
|
pH |
1.5~2.1 |
|
Specific rotation[a]D020 |
+5.5°~+8.9° |
|
Chloride(Cl) |
19.8~20.8% |
|
Ammonium(NH4) |
≤0.02% |
|
Sulfate(SO4) |
≤0.03% |
|
Iron(Fe) |
≤10ppm |
|
Heavy metals(Pb) |
≤10ppm; |
|
Arsenic |
≤1ppm |
|
Other amino acids |
Not detectable |
|
Loss on drying |
0.5% |
|
Residue on ignition |
≤0.10% |
It is used in dyeing industry as deoxidizer and bleaching agent for a variety of cotton fabric treating and scouring, which can prevent fabrics from local oxidation and deterioration of fibre strength. In photographic industry it is used as a reagent. In organic industry it is used as reducing agent in production of m-phenylenediamine, 25 - bared oxazolone, amino salicylic acid, etc. Textile industry uses it as a stabilizer for synthetic fibre. Other applications include various uses in paper mills, electronic industry, water treatment, etc.
Medicine, used as salting-out agent, coagulant, also used in paper, glass, printing and dyeing, synthetic fiber, leather and other industries.
Mainly used as synthetic detergent filling material. Papermaking industry used in the manufacture of sulfate pulp cooking agent. Glass industry to replace soda ash. Used for manufacturing sodium sulphide, sodium silicate and chemical industry raw materials of other chemical products. Textile industry is used to allocate vinylon spinning coagulation bath. Pharmaceutical industry is used as the delay evacuant. Also used in non-ferrous metallurgy, leather, etc.
