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
239232
Calcium hydroxide
ACS reagent, ≥95.0%
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About This Item
Prodotti consigliati
Grado
ACS reagent
Saggio
≥95.0%
Stato
powder
Impurezze
≤0.03% insol. in HCl
≤0.1% S compounds
≤3.0% calcium carbonate
pH
12.4-12.6 (20 °C)
Densità
2.24 g/mL at 25 °C (lit.)
Anioni in tracce
chloride (Cl-): ≤0.03%
Cationi in tracce
Fe: ≤0.05%
K: ≤0.05%
Mg: ≤0.5%
Na: ≤0.05%
Sr: ≤0.05%
heavy metals: ≤0.003% (by ICP)
Stringa SMILE
O[Ca]O
InChI
1S/Ca.2H2O/h;2*1H2/q+2;;/p-2
AXCZMVOFGPJBDE-UHFFFAOYSA-L
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Categorie correlate
Descrizione generale
Applicazioni
- In the pretreatment of technical lignin during the pyrolysis in a fluidized bed reactor to overcome the agglomeration to produce phenolic-rich bio-oil.
- As a catalyst in the pyrolysis of pinewood in a fixed bed reactor.
Avvertenze
Danger
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3
Organi bersaglio
Respiratory system
Codice della classe di stoccaggio
13 - Non Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
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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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