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
推薦產品
品質等級
化驗
≥99.99% trace metals basis
形狀
liquid
expl. lim.
27 %
濃度
28% NH3 in H2O
pH值
11.7 (20 °C)
密度
0.9 g/mL at 25 °C (lit.)
0.9 g/mL at 25 °C
儲存溫度
2-8°C
SMILES 字串
[NH4+].[OH-]
InChI
1S/H3N.H2O/h1H3;1H2
InChI 密鑰
VHUUQVKOLVNVRT-UHFFFAOYSA-N
尋找類似的產品？ 前往 產品比較指南
一般說明
應用
- 通过使用二价或三价铁盐作为铁前体的改良可控化学共沉淀法制备磁性（Fe3O4）纳米颗粒的介质。
- 氨解反应的试剂。
- 通过一锅法缩合醛和乙酰乙酸烷基酯合成1，4 二氢吡啶的溶剂。
訊號詞
Danger
危險聲明
危險分類
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3
標靶器官
Respiratory system
儲存類別代碼
8B - Non-combustible corrosive hazardous materials
水污染物質分類（WGK）
WGK 2
閃點（°F）
Not applicable
閃點（°C）
Not applicable
從最近期的版本中選擇一個：
分析證明 (COA)
文章
Polar graphitic carbon enables UHPLC separation of highly polar pesticides, herbicides, and Vitamin D metabolites, advancing liquid chromatography capabilities.
Experts discuss challenges and production processes of nickel-rich layered oxide cathode materials in energy storage systems.
條款
Optimize β-glucuronidase hydrolysis for glucuronide metabolite analysis considering factors like time, temperature, pH, and enzyme concentration.
为了使用β-葡糖醛酸酶优化水解，必须对每种待分析的葡糖苷酸代谢物进行某些因素的评估，例如孵育时间、温度、水解pH、酶源和酶浓度。
相關內容
Separation of Tartrazine; Amaranth; Indigo carmine; New Coccine; Sunset Yellow FCF; Allura Red AC; Fast Green FCF; Erioglaucine disodium salt; Erythrosin B sodium salt; Phloxine B; Rose bengal
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How can I determine the shelf life / expiration / retest date of this product?
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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
Helpful?
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Is the concentration of item 338818-1L expressed as % w/w?
1 answer-
Yes.
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