China wholesale Activated Alumina - Wet Aluminium Hydroxide – Ton Year Detail:
Chemical Name: Industrial Grade Aluminium Hydroxide Wet Powder
Synonyms: Hydrated alumina; Alumina hydrate; Alumina trihydrate; ATH; Aluminum hydrate; Aluminum trihydrate; Alhydrogel; Superfos; Amphogel; Aluminum (III) hydroxide; Amorphous alumina; Trihydrated Alumina; Trihydroxyaluminum
Molecular Formula: Al(OH)3
CAS No.：21645-51-2
H.S. CODE: 28183000
Aluminium hydroxide, Al(OH)3, is the most stable form of aluminium in normal conditions. It is found in nature as the mineral gibbsite (also known as hydrargillite) and its three, much more rare, polymorphs: bayerite, doyleite and nordstrandite. Closely related are aluminium oxide hydroxide, AlO(OH), and aluminium oxide, Al2O3, differing only by loss of water. These compounds together are the major components of the aluminium ore bauxite. Freshly precipitated aluminium hydroxide forms gels, which is the basis for application of aluminium salts as flocculants in water purification. This gel crystallizes with time. Aluminium hydroxide gels can be dehydrated (e.g., with the utility of water-miscible non-aqueous solvents like ethanol) to form an amorphous aluminium hydroxide powder, which is readily soluble in acids. Heat-dried aluminium hydroxide powder is known as activated alumina and is used in gas purification, as a catalyst support and an abrasive.
Applications:
All kinds of aluminum compounds; Flame retardant additives for flammable materials (such as plastic, rubber, paper, pigment and coating); Water purifying agent, desiccant, glass and building materials, and fillers, etc.
Specification of wet powder:
|
Al(OH)3 |
99.8% min |
|
Al2O3 |
64.8% min |
|
SiO2 |
0.012% max |
|
Fe2O3 |
0.01% max |
|
Na2O |
0.4% max |
|
Moisture |
0.1% max |
|
L.O.I. |
35%max |
|
Particle size |
+150um(3.0%max) +75um(45.0%max) +45um(40.0%max) -26um(8.0%max) |
Product detail pictures:
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