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
795429
氢氧化钠
anhydrous, free-flowing, pellets, Redi-Dri™, ACS reagent, ≥97%
别名:
‘苛性钠’
选择规格
| 规格/货号 | 是否有货 | 价格 |
|---|---|---|
500 g | 请联系客服了解存货情况 | $141.00 |
1 kg | 即日发货发货地SIGMA ALDRICH Pte Ltd | $224.00 |
2.5 kg | 请联系客服了解存货情况 | $373.00 |
12 kg | 请联系客服了解存货情况 | $946.00 |
关于此项目
Quality Segment
grade
ACS reagent, anhydrous
agency
suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3
vapor density
>1 (vs air)
vapor pressure
<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
product line
Redi-Dri™
assay
≥97%
form
pellets
quality
free-flowing
impurities
≤0.001% N compounds, ≤0.02% NH4OH ppt., ≤1.0% Na2CO3
mp
318 °C (lit.)
solubility
water: soluble 1260 g/L at 20 °C
density
2.13 g/cm3
anion traces
chloride (Cl-): ≤0.005%, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.003%
cation traces
Fe: ≤0.001%, Hg: ≤0.1 ppm, K: ≤0.02%, Ni: ≤0.001%, heavy metals (as Ag): ≤0.002%
application(s)
PFAS testing
SMILES string
[OH-].[Na+]
InChI
1S/Na.H2O/h;1H2/q+1;/p-1
InChI key
HEMHJVSKTPXQMS-UHFFFAOYSA-M
General description
Application
- 制备用于蛋白质交联技术的3,3′-双(磺酸基)-4,4′-二(氯乙酰氨基)偶氮苯钠(BSBCA)。
- 制备电解液，以研究电解液组成对电化学还原法将CO2转化为CO的影响。
- 制备用于保存睾丸生殖细胞三维染色质结构的三维(3D)载玻片法的CSK(细胞骨架)缓冲液。
- ZSM(zeolite socony mobil)沸石的合成。
氢氧化钠可用于胶体二氧化硅比表面积的滴定法测定。它可用于硼氢化钠的直接氧化，通过循环和线性伏安法、计时电流法和计时电位法开展研究。可用于制备柠檬酸缓冲液和硼酸缓冲液。
它可用于合成：
- 烷基芳基氨基磺基甜菜碱
- (3 -[4-叔辛基苯氧基乙氧基乙氧基乙基]二甲基氨丙烷磺酸酯(XOSB)
- 三磺基甜菜碱(TriSBn)
氢氧化钠可用作滴定法、溶出度测定的碱，调节pH值和去除吸气瓶中的酸性气体。
它可用于以下过程：
- 在存在金催化剂的情况下将甘油转化为甘油酸。
- 钯催化乙烯基烷氧基硅烷与芳基溴或氯化物的交叉偶联反应，以生成苯乙烯。
Features and Benefits
- 提高效率——免除需要松散硬化粉末的时间和精力
- 更加安全——避免使用工具大力敲碎团块的风险
- 更加经济——制备和溶剂化速度更快，提高效率并节约成本
- 质量保证——经过专业检测的出色品质，无抗结剂添加
- 灵活的用量选择——有从研究到放大级别的用量规格可供选择
Legal Information
1 of 1
此商品 | |||
|---|---|---|---|
| description anhydrous, free-flowing, pellets, Redi-Dri™, ACS reagent, ≥97% | description ACS reagent, ≥97.0%, pellets | description reagent grade, 97%, flakes | description reagent grade, ≥98%, pellets (anhydrous) |
| grade ACS reagent, anhydrous | grade ACS reagent | grade reagent grade | grade reagent grade |
| assay ≥97% | assay ≥97.0% | assay 97% | assay ≥98% |
| Quality Level 100 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| agency suitable for DIN 38407-42, suitable for EPA 533, suitable for EPA OTM-45, suitable for EPA 1621, suitable for SM 4500 - NH3, suitable for EPA 8327 | agency suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3 | agency suitable for DIN 38407-42, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45 | agency suitable for EPA 1621, suitable for SM 4500 - NH3 |
| form pellets | form pellets | form flakes | form pellets (anhydrous) |
| solubility water: soluble 1260 g/L at 20 °C | solubility water: soluble 1,260 g/L at 20 °C | solubility water: soluble 1260 g/L at 20 °C | solubility water: soluble 1260 g/L at 20 °C |
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
存储类别
8B - Non-combustible corrosive hazardous materials
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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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