7727-73-3 Usage
Description
Sodium sulfate decahydrate is a white crystalline solid with the chemical formula Na2SO4·10H2O. It is a hydrated form of sodium sulfate and is commonly used in various industrial applications due to its unique properties.
Uses
Used in Paper Pulp Industry:
Sodium sulfate decahydrate is used in the Kraft Process for manufacturing paper pulp. It helps in the separation of cellulose fibers from lignin, making it easier to produce high-quality paper.
Used in Glass and Ultramarine Manufacturing:
Sodium sulfate decahydrate is used in the production of glass and ultramarine, a blue pigment. It acts as a fluxing agent, lowering the melting point of the raw materials and improving the overall quality of the final product.
Used in Textile Industry:
Sodium sulfate decahydrate is used in dyeing and printing textiles. It facilitates the leveling of dyes, reduces negative charges on fibers, and allows dye to penetrate evenly. It also helps in avoiding the corrosion of stainless steel vessels used in dyeing.
Used in Detergent Industry:
Sodium sulfate decahydrate is used as a filler in powdered home laundry detergents. It helps in improving the detergent's performance and reducing its production cost.
Used in Organic Synthesis and Instrumental Analysis:
Anhydrous sodium sulfate is used as an agent to remove water from organic solvents and their extracts for organic synthesis and instrumental analysis. It helps in obtaining pure and dry samples for further analysis and processing.
Used as a Laboratory Reagent:
Sodium sulfate decahydrate is a common laboratory reagent used for various purposes, including the precipitation of proteins and the preparation of other sodium salts.
Used in Cotton Fabric Dyeing:
Sodium sulfate decahydrate may be used to deepen the color while dyeing cotton fabrics, enhancing the overall appearance and quality of the final product.
Used as a Laxative:
Sodium sulfate decahydrate is also used as a laxative, effectively replacing the drug paracetamol in the body and providing relief from constipation.
Production
Sodium sulfate is mined from its natural mineral deposits and subjected to purification. Sodium sulfate is synthesized by the Mannheim process or Hargreaves process. Manheim’s process is based on Glauber’s reaction between sulfuric acid and sodium chloride:
2NaCl + H2SO4 → Na2SO4 + 2HCl↑
The process was devised by Johann Glauber to produce hydrochloric acid. Sodium sulfate is isolated from the solution by fractional crystallization. Hargreaves’ process also was developed to produce hydrochloric acid. It is a variation of Mannheim’s method. In this method, sulfur dioxide is used instead of sulfuric acid. The reaction is as follows:
4NaCl + 2SO2 + O2 + 2H2O → 2Na2SO4 + 4HCl↑
Sodium sulfate also is obtained as a byproduct of manufacturing phenol by caustic fusion.
Purification Methods
Crystallise sodium sulfate from water at 30o (1.1mL/g) by cooling to 0o. It becomes anhydrous at 32o.
Check Digit Verification of cas no
The CAS Registry Mumber 7727-73-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,2 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7727-73:
(6*7)+(5*7)+(4*2)+(3*7)+(2*7)+(1*3)=123
123 % 10 = 3
So 7727-73-3 is a valid CAS Registry Number.
InChI:InChI=1/Na.H2O4S.10H2O/c;1-5(2,3)4;;;;;;;;;;/h;(H2,1,2,3,4);10*1H2/q+1;;;;;;;;;;;/p-2
