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239186
Aluminum hydroxide
reagent grade
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| Size/SKU | Availability | Price |
|---|---|---|
25 g | Available to ship TODAYfromMILWAUKEE | $62.70 $47.02 |
500 g | Available to ship TODAYfromMILWAUKEE | $84.60 |
2 kg | Estimated to ship onAugust 24, 2026fromMILWAUKEE | $248.00 $186.00 |
About This Item
Linear Formula:
Al(OH)3
CAS Number:
Molecular Weight:
78.00
NACRES:
NA.55
PubChem Substance ID:
UNSPSC Code:
12352305
EC Number:
244-492-7
MDL number:
Concentration:
50.0-57.5% (Al (as Al2O3), EDTA titration)
Form:
powder
Grade:
reagent grade
$47.02
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grade
reagent grade
Quality Segment
form
powder
composition
Al2O3, 50-57%
concentration
50.0-57.5% (Al (as Al2O3), EDTA titration)
solubility
water: insoluble
density
2.42 g/cm3 at 20 °C
SMILES string
O[Al](O)O
InChI
1S/Al.3H2O/h;3*1H2/q+3;;;/p-3
InChI key
WNROFYMDJYEPJX-UHFFFAOYSA-K
General description
Aluminum hydroxide (Al (OH)3) is an amphoteric compound, soluble in both base and acids. It is used as a precursor for alumina catalysts and flame-retardant materials. Aluminum hydroxide is primarily used as a feedstock to produce other aluminum compounds, including sodium aluminate, activated alumina, aluminum nitrate, zeolites, polyaluminum chloride, aluminum chloride, and specialty calcined aluminas.
Application
Aluminum hydroxide may be used:
- In the preparation of Li2O–Al2O3–SiO2 (LAS) glass-ceramic systems.
- As a aluminum precursor in the preparation of alumina.
Other Notes
may contain aluminum carbonate species
1 of 1
This Item | |||
|---|---|---|---|
| description reagent grade | description (fine powder pure, hydrargillite), Technipur® | description United States Pharmacopeia (USP) Reference Standard | description powder, hydrargillite EMPLURA® |
| grade reagent grade | grade - | grade pharmaceutical primary standard | grade - |
| concentration 50.0-57.5% (Al (as Al2O3), EDTA titration) | concentration - | concentration - | concentration - |
| Quality Level 100 | Quality Level 100 | Quality Level - | Quality Level 200 |
| form powder | form - | form powder | form powder |
| solubility water: insoluble | solubility - | solubility water: insoluble | solubility water: insoluble at 20 °C |
| density 2.42 g/cm3 at 20 °C | density 2.42 g/cm3 at 20 °C | density 2.42 g/cm3 at 20 °C | density 2.42 g/cm3 at 20 °C |
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Storage Class
13 - Non Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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What is the particle size of aluminum hydroxide product 239186 (CAS 21645-51-2) powder? Is it as fine as a nanopowder?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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What is the solubility of aluminum hydroxide product 239186 (CAS 21645-51-2)?
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The product is insoluble in water but is soluble in alkaline aqueous solution, HCl, and H2SO4 solution.
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