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.pdf
237086
硫酸铝钾 十二水合物
ACS reagent, ≥98%
同義詞:
明矾, 硫酸钾铝 十二水合物, 钾明矾
選擇尺寸
關於此項目
98.0-102.0% (ACS specification)
跳轉至
產品名稱
硫酸铝钾 十二水合物, ACS reagent, ≥98%
InChI key
GNHOJBNSNUXZQA-UHFFFAOYSA-J
InChI
1S/Al.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4
SMILES string
O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
grade
ACS reagent
assay
≥98%
98.0-102.0% (ACS specification)
form
powder or crystals
reaction suitability
reagent type: catalyst
core: aluminum
impurities
≤0.005% insolubles
pH
3.3 (94.88 g/L)
mp
92 °C (lit.)
density
1.757 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm
cation traces
Fe: ≤0.001%
NH4+: ≤0.005%
Na: ≤0.02%
heavy metals: ≤0.001% (by ICP)
Quality Level
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本產品 | 31242 | A7210 | 1.01047 |
|---|---|---|---|
| form powder or crystals | form powder or crystals | form powder | form solid |
| assay ≥98%, 98.0-102.0% (ACS specification) | assay ≥99.5% | assay ≥98.0% | assay 99.0-100.5% (complexometric) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| grade ACS reagent | grade ACS reagent, puriss. p.a. | grade - | grade ACS reagent |
| impurities ≤0.005% insolubles | impurities ≤0.005% ammonium (NH4) | impurities ≤0.0005% Phosphorus (P), ≤0.005% Insoluble matter | impurities ≤0.005% Insoluble matter |
| mp 92 °C (lit.) | mp 92 °C (lit.) | mp 92 °C (lit.) | mp 92.5 °C |
存儲類別/等級
11 - Combustible Solids
wgk
WGK 1
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How can I determine the shelf life / expiration / retest date of this product?
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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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