Aluminium sulfate octadecahydrate

Base Information

• Chemical Name: Aluminium sulfate octadecahydrate
• CAS No.: 7784-31-8
• Molecular Formula: Al2^.(SO4)3^.18(H2O)
• Molecular Weight: 447.32
• Hs Code.: 2833 22 00
• Mol file: 7784-31-8.mol

Synonyms:Aluminumsesquisulfate octadecahydrate;Aluminum sulfate (Al2(SO4)3) hydrate (1:18);Aluminumsulfate (Al2(SO4)3) octadecahydrate;Aluminum sulfate octadecahydrate;Aluminumsulfate octadecahydrate (Al2(SO4)3.18H2O);Aluminum trisulfate octadecahydrate;Cake alum;Dialuminum sulfate octadecahydrate;Dialuminum trisulfateoctadecahydrate;Patent alum;

Chemical Property of Aluminium sulfate octadecahydrate

Chemical Property:

• Appearance/Colour: white crystalline chunks
• Vapor Pressure: 3.35E-05mmHg at 25°C
• Melting Point: 86 °C
• Boiling Point: 330oC at 760 mmHg
• PSA: 432.06000
• Density: 1.69 g/cm³
• LogP: -1.25400
• Storage Temp.: Store at room temperature.
• Sensitive.: moisture sensitive
• Solubility.: 364g/l
• Water Solubility.: Soluble

Purity/Quality:

99% ^*data from raw suppliers

Aluminum sulfate octadecahydrate, 98+% (ACS) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi, Xn, N
• Hazard Codes: N-Xn,Xi,N,Xn
• Statements: 51/53-41-36/37/38-22
• Safety Statements: 61-37/39-29-26-39

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Uses: The compound is used heavily in the paper industry. In its acidic solution form, which contains a slight excess of H2SO4, it is used for pH control of pulp slurries, treatment of process waters, setting of dyes and also for precipitating dissolved resin for setting the size on the fibers. In slight basic form (containing a slight excess of Al2O3), it is used for treatment of drinking and waste waters (e.g., for reducing phosphorus content). Other major applications include dyeing, tanning, catalysts, modification of concrete, and in the manufacture of various chemicals and pharmaceutical products. Aluminium sulfate octadecahydrate is a preservative, the inclusive term for several inum-type compounds such as inum sulfate and inum potassium sulfate. It is used with edta to prevent discoloration of potatoes and to maintain the firmness of shrimp packs. It is also used in pickles and pickle relish.
• Physical properties: White crystal; sweet taste; density 1.62 g/cm3: decomposes at 86.5°C; soluble in water.