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
439134
乙腈
≥99.9%, gradient grade, suitable for UV/Vis spectroscopy, HPLC
别名:
ACN, 乙腈, 氰甲烷, 甲基氰
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产品名称
乙腈, suitable for HPLC, gradient grade, ≥99.9%
等級
gradient grade
品質等級
蒸汽密度
1.41 (vs air)
蒸汽壓力
72.8 mmHg ( 20 °C)
描述
HPLC gradient analysis <= 0.5 mAU @254 nm
HPLC gradient analysis <= 3 mAU @ 210 nm
baseline drift at 210 nm <= 15 mAU
化驗
≥99.9%
形狀
liquid
自燃溫度
973 °F
純化經由
sub-micron filtration
expl. lim.
16 %
技術
HPLC: suitable
UV/Vis spectroscopy: suitable
雜質
≤0.0002% free alkali (as NH3)
≤0.001% free acid (as CH3COOH)
≤0.01% water (Karl Fischer)
≤0.5 ppb quinine fluor., 365 nm
≤1 ppb quinine fluor., 254 nm
蒸發殘留物
<0.0002%
折射率
n20/D 1.344 (lit.)
bp
81-82 °C (lit.)
mp
−45 °C (lit.)
溶解度
water: soluble
密度
0.786 g/mL at 25 °C (lit.)
&lambda ；
H2O reference
紫外吸收
λ: 195 nm Amax: ≤0.12
λ: 200 nm Amax: ≤0.032
λ: 230 nm Amax: ≤0.0044
應用
food and beverages
形式
neat
SMILES 字串
CC#N
InChI
1S/C2H3N/c1-2-3/h1H3
InChI 密鑰
WEVYAHXRMPXWCK-UHFFFAOYSA-N
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此商品 | 34998 | 900667 | 34881 |
|---|---|---|---|
| grade gradient grade | grade HPLC Plus | grade - | grade - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| assay ≥99.9% | assay ≥99.9% | assay ≥99.92% | assay ≥99.8% (GC) |
| application(s) food and beverages | application(s) food and beverages | application(s) food and beverages | application(s) food and beverages |
| technique(s) HPLC: suitable, UV/Vis spectroscopy: suitable | technique(s) HPLC: suitable, IR spectroscopy: suitable | technique(s) mass spectrometry (MS): suitable | technique(s) HPLC-GC: suitable, HPLC: suitable, gas chromatography (GC): suitable |
| solubility water: soluble | solubility - | solubility - | solubility - |
一般說明
應用
- 花青素的色谱分离：乙腈是高效液相色谱（HPLC）中用于分离花青素和其他酚类化合物的优选溶剂。研究探索了通过在流动相中用甲醇代替乙腈来控制花青素分离的选择性，突出了溶剂在优化色谱条件以提高分辨率和检测灵敏度方面的作用（Deineka等人，Journal of Analytical Chemistry，2021年）。
- 过氧草酸盐化学发光检测：乙腈用于过氧草酸盐化学发光检测α-氨基酸。溶剂与水和乙酸乙酯形成稳定混合溶液的能力增强了化学发光反应，从而可以对各种样品中的氨基酸进行灵敏和选择性检测。该应用对于生化和临床分析至关重要（Kan等人，American Journal of Analytical Chemistry，2020年）。
- DNA 修饰的电化学检测：乙腈用于电化学方法检测DNA修饰，例如5-甲酰尿嘧啶。（2-苯并咪唑基）乙腈标记反应中溶剂的稳定作用增强了检测DNA修饰的选择性和灵敏度，这对于基因组和生物医学研究至关重要（Tang等人，Analytical Chemistry，2021年）。
- 色谱中的替代溶剂：研究了在反相HPLC中用乙醇代替乙腈来测定花青素。这种替代旨在保持色谱性能，同时减少与乙腈使用相关的环境影响和成本。研究结果表明，在不影响分析质量的情况下，使用乙醇作为更环保的替代品的可行性（Deineka等人，Journal of Analytical Chemistry，2023年）。
包裝
作为实验室试剂的全球领导者，我们始终如一地不断探索提高产品安全性的新方法。新开发4L溶剂瓶采用先进的密封技术消除漏液，让溶剂处理变得更加安全和便利。
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準備報告
相關產品
訊號詞
Danger
危險分類
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2
儲存類別代碼
3 - Flammable liquids
水污染物質分類（WGK）
WGK 2
閃點（°F）
35.6 °F - closed cup
閃點（°C）
2.0 °C - closed cup
实验方案
A guide to create solvent systems used for the thin-layer chromatography assay of Novabiochem products.
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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?
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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Are these poly inner containers designed to be removed and used separately from the stainless steel overpack?
1 answer-
The drum consists of an inner poly drum and an outer CS shell, which are intended to be used together. It is crucial to note that these components have not been designed for separate usage. Removing the inner poly drum from the outer CS shell is not advised.
Helpful?
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Do the poly inner containers comply with any recognized specifications, such as DOT spec 34 or UN rating 1H1?
1 answer-
The CS shell should bear the UN Mark typically appearing as "1A2/X50/S/20/USA...".
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我们的科学家团队拥有各种研究领域经验，包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.
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