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
About This Item
推薦產品
品質等級
化驗
99%
mp
>350 °C (lit.)
SMILES 字串
[Na+].[Na+].[O-][Se]([O-])=O
InChI
1S/2Na.H2O3Se/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
InChI 密鑰
BVTBRVFYZUCAKH-UHFFFAOYSA-L
尋找類似的產品？ 前往 產品比較指南
訊號詞
Danger
危險分類
Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1
安全危害
儲存類別代碼
6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
水污染物質分類（WGK）
WGK 2
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
文章
Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.
抗氧化剂可保护生物系统免受含氧自由基和氧化还原过渡金属离子（如铁、铜和镉）引起的氧化损伤。
條款
Selenium's roles range from essential dietary element to semiconductor in advanced applications like xerography.
硒的角色從必要的食物元素到先進應用中的半導體，如 Xerography。
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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Is this product suitable for cell culture? What is the difference between this product and S5261? Are both suitable for the cell?
1 answer-
Product 214485 has not been tested for cell culture applications. The suitability would need to be determined by the end-user. However, product S5261 is tested for cell culture applications.
Please see the link below to review the S5261 product datasheet as well as a sample Certificates of Analysis for each item.
S5261 Datasheet
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/245/224/s5261pis.pdfS5261 Certificate of Analysis
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/S5261-BULKSLCN8615.pdf214485 Certificate of Analysis
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/214485-BULKMKCT7508.pdfHelpful?
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If I am freezing my stock solutions of sodium selenite (in solution), how long are they stable for at -20°C / what is the shelf life at -20°C once in solution?
1 answer-
Unfortunately, stability studies at -20°C have not been conducted. Stock solutions are quite stable when stored refrigerated. Media supplements containing selenite, such as ITS (I3146), are stored at 2 - 8 °C and offer a 2 year shelf life. This should apply to the single component sodium selenite solution, as well. It is unknown if the freeze/thaw process may cause some precipitation. If the stock solution has already been frozen, thaw slowly overnight in the refrigerator to minimize this possibility.
Please see the link below to review a sample Certificate of Analysis for the ITS supplement I3146.
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/I3146-5MLSLCN8789.pdfHelpful?
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How should Product 214485, Sodium selenite, be stored?
1 answer-
Sodium selenite should be stored at room temperature in a dry place. Sodium selenite is a moisture sensitive compound.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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What is Product 214485, Sodium selenite, soluble in?
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Sodium selenite is soluble in water (50 mg/mL), yielding a clear to slightly hazy, colorless to very faint yellow solution.
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How stable is Product 214485, Sodium selenite, in solution?
1 answer-
Stock solutions of sodium selenite may be frozen. Working aliquots are stable for 30 days at 2-8 °C.
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