Aluminum hydroxide CAS No.21645-51-2
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Category：Pharmaceutical Materials Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
CAS No.21645-51-2
Name
Aluminum hydroxide
Synonyms
alugel
alumigel
alcoac333
alcoac330
alcoac30bf
C.I. 77002
aluminicacid
aluminahydrated
Aluminiumhydrate
Aluminium hydrate
Aluminum hydroxide
Alumina trihydrate
Aluminium Hydroxide
aluminum trihydrate
Aluminum hydroxide, dried [JAN]
| Attribute | Details |
|---|---|
| Chemical Name | Aluminum Hydroxide |
| CAS Number | 21645-51-2 (anhydrous); 1330-44-5 (hydrate) |
| Synonyms | Al(OH)3; Aluminum Trihydroxide; Hydrated Alumina; Algeldrate; Aluminum hydroxide hydrate |
| Molecular Formula | Al(OH)3 |
| Molecular Weight | 78.00 g/mol (anhydrous); varies with hydration state |
| Appearance | White amorphous powder or colloidal suspension |
| Physical Properties | Insoluble in water; soluble in acids and alkaline solutions; melts at approximately 300°C; decomposes to alumina and water upon heating |
| Chemical Properties | Amphoteric; reacts with acids to form aluminum salts and water; reacts with bases to form aluminates and water |
| Uses | – Pharmaceutical: Used as an antacid to treat hyperacidity and ulceration by neutralizing stomach acid. – Flame Retardant: Widely used as a flame retardant additive in plastics, rubber, and other polymeric materials. – Water Treatment: Used in water purification processes to remove impurities by flocculation. – Industrial: Used in the manufacture of glass, ceramics, and refractory materials; as a raw material in the production of aluminum. |
| Production Methods | Produced from bauxite ore through various processes such as the Bayer process or sintering process, followed by precipitation and purification steps. |
| Safety Information | Considered non-toxic and non-irritating; however, prolonged exposure to dust may cause respiratory irritation; handle with appropriate personal protective equipment and refer to the MSDS for detailed safety and handling instructions. |
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