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239186

Sigma-Aldrich

氢氧化铝

reagent grade

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About This Item

线性分子式:
Al(OH)3
CAS号:
21645-51-2
分子量:
78.00
EC號碼:
244-492-7
MDL號碼:
MFCD00003420
分類程式碼代碼:
12352305
PubChem物質ID:
329752517
NACRES:
NA.55
濃度:
50.0-57.5% (Al (as Al2O3), EDTA titration)
等級:
reagent grade

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等級

reagent grade

品質等級

100

形狀

powder

成份

Al2O3, 50-57%

濃度

50.0-57.5% (Al (as Al2O3), EDTA titration)

溶解度

water: insoluble

密度

2.42 g/cm3 at 20 °C

SMILES 字串

O[Al](O)O

InChI

1S/Al.3H2O/h;3*1H2/q+3;;;/p-3

InChI 密鑰

WNROFYMDJYEPJX-UHFFFAOYSA-K

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一般說明

氢氧化铝（Al (OH)3）是一种两性化合物，可溶于碱和酸。它用作氧化铝催化剂和阻燃材料的前体。氢氧化铝主要用作生产其他铝化合物的原料，包括铝酸钠、活性氧化铝、硝酸铝、沸石、聚合氯化铝、氯化铝和特种煅烧氧化铝。

應用

氢氧化铝可用于：
  • 制备Li2O–Al2O3–SiO2 (LAS)玻璃陶瓷系统。
  • 作为制备氧化铝的铝前体。

其他說明

可能含有碳酸铝物质

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類（WGK）

nwg

閃點（°F）

Not applicable

閃點（°C）

Not applicable

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
0000325964
0000325965
0000363962
MKCW2481
MKCV5819

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Arsenate adsorption on amorphous aluminum hydroxide.
Anderson MA, et al.
Journal of Colloid and Interface Science, 54(3), 391-399 (1976)
Hydrothermal extraction of potassium from potassic quartz syenite and preparation of aluminum hydroxide.
Ma X, et al.
International Journal of Mineral Processing, 147, 10-17 (2016)
Utilization of alum sludge for producing aluminum hydroxide and layered double hydroxide.
Wang LY, et al.
Ceramics International, 40(10), 15503-15514 (2014)
Property enhancement of kenaf fiber reinforced composites by in situ aluminum hydroxide impregnation.
Xia C, et al.
Industrial Crops and Products, 79, 131-136 (2016)
Biosorption of fluoride from drinking water using spent mushroom compost biochar coated with aluminum hydroxide.
Chen GJ, et al.
Desalination and Water Treatment, 1-11 (2015)
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  3. What is the solubility of aluminum hydroxide product 239186 (CAS 21645-51-2)?

    1 answer

    1. The product is insoluble in water but is soluble in alkaline aqueous solution, HCl, and H2SO4 solution.

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