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ALUMINIUM HYDROXIDE |
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PRODUCT IDENTIFICATION |
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| CAS NO. |
21645-51-2 |
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| EINECS NO. | 244-492-7 | |
| FORMULA |
Al(OH)3 |
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| MOL WT. | 78 | |
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H.S. CODE |
2818.30 | |
| TOXICITY | ||
| SYNONYMS | Hydrated alumina; Alumina hydrate; Alumina trihydrate; | |
| ATH; Aluminum hydrate; Aluminum trihydrate; Alhydrogel; Superfos; Amphogel; Aluminum (III) hydroxide; Amorphous alumina; Trihydrated Alumina; Trihydroxyaluminum; | ||
| RAW MATERIALS | ||
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CLASSIFICATION |
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GENERAL DESCRIPTION |
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Hydrated alumina, also known as alumina trihydrate (ATH), or simply hydrate, is more accurately chemically designated as aluminum trihydroxide, Al(OH)3. It is a non-abrasive powder with a Mohs' hardness index of 2.5 - 3.5 and a specific gravity of 2.42. Alumina trihydrate is the largest volume flame retardant used in the world. On heating to 200°C, hydrated alumina decomposes into 66% alumina and 34% water. This irreversible process is, in part, what makes ATH an effective flame retardant. Aluminium hydroxide is also used as an adsorbent, emulsifier, ion exchanger, mordant, antacid, and filtering medium. It is also used in the manufacture of paper, ceramics, printing inks, detergents, for waterproofing fabrics and in dentrifrices and antiperspirants |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | odorless white powder | |
| MELTING POINT |
300 C |
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| BOILING POINT | ||
| SPECIFIC GRAVITY | 2.42 | |
| SOLUBILITY IN WATER | insoluble | |
| pH | weak basic | |
| VAPOR DENSITY | ||
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AUTOIGNITION |
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NFPA RATINGS |
Health: 1; Flammability: 0; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT | Not considered to be a fire hazard | |
| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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Production of aluminum chemicals. Major products include alum (aluminum sulfate), poly aluminum chloride (PAC), sodium aluminate, zeolites, aluminum fluoride. A raw material in the manufacture of glass, glazes and frits . A raw material in catalyst production . A flame retardant and smoke suppressant filler in plastics like: cables, rubber products and carpet backing. A raw material for fertilizers, and fibre cement board products. An extender and bodying agent in paper, solvent- and water-borne paints, UV curable coatings, inks, and adhesives. A polishing and cleansing agent, mould wash and separating agent A filler of cast polymer products such as onyx and solid surfaces. |
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| SALES SPECIFICATION | ||
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APPEARANCE |
white powder |
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Al(OH)3 |
99.5% min |
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Al2O3 |
64.0% min |
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SiO2 |
0.015% max |
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Fe2O3 |
0.02% max |
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MOISTURE |
8.0% - 10.0% |
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LOSS ON IGNITION |
34.0 - 35.0% |
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WHITENESS |
85% min |
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PARTICLE SIZE |
+150um
(3.0% max) |
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TRANSPORTATION |
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| PACKING | 25kgs, 50kgs, 1mt in Bag | |
| HAZARD CLASS | ||
| UN NO. | ||
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GENERAL DESCRIPTION OF FLAME RETARDANT AGENT |
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Flame Retardant
are substances that can be
chemically inserted into the polymer molecule
or be physically blended in polymers
after polymerization to suppress, reduce, delay
or modify the propagation of a flame
through a plastic materials. There are several classes of flame retardants;
Halogenated Hydrocarbons (Chlorine and
Bromine containing compounds and reactive
flame retardants), Inorganic flame retardants
( Boron compounds, Antimony oxides,
Aluminium Hydroxide, molybdenum compounds,
zinc and magnesium oxides ), Phosphorous
containing compounds (Organic phosphate
esters, phosphates, halogenated phosphorus
compounds and inorganic phosphorus containing
salts).
Class of Flame Retardants
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PRICE
INFORMATION
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