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
蒸汽密度
>1 (vs air)
品質等級
蒸汽壓力
<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)
產品線
EMPLURA®
化驗
≥97% (NaOH, acidimetric)
形狀
pellets
技術
cell culture | stem cell: suitable
pH值
>14 (20 °C, 100 g/L in H2O)
mp
318 °C (lit.)
溶解度
1090 g/L
密度
2.13 g/mL at 20 °C
負離子痕跡
carbonate (as Na2CO3): ≤1%
chloride (Cl-): ≤0.012%
sulfate (SO42-): ≤0.01%
正離子痕跡
Al: ≤0.002%
Fe: ≤0.002%
heavy metals (as Pb): ≤0.002%
儲存溫度
2-30°C
SMILES 字串
[OH-].[Na+]
InChI
1S/Na.H2O/h;1H2/q+1;/p-1
InChI 密鑰
HEMHJVSKTPXQMS-UHFFFAOYSA-M
尋找類似的產品？ 前往 產品比較指南
應用
- Improvement of durability and drying shrinkage of sodium carbonate activated slag through the incorporation of calcium hydroxide and sodium hydroxide.: 本研究考察了氢氧化钠和氢氧化钙加入碳酸钠活性渣中的影响。结果表明，该材料的耐久性和干燥收缩性能大幅改善，成为需要增强性能的建筑应用的可行选择 (Construction and Building Materials, 2020)。
- Effect of Sodium Silicate to Hydroxide Ratio and Sodium Hydroxide Concentration on the Physico-Mechanical Properties of Geopolymer Binders.: 本研究调查了硅酸钠与氢氧化钠的比率以及氢氧化钠浓度对偏高岭土基土聚物粘合剂机械性能的影响。结果表明，比率和浓度都明显影响粘合剂的抗压强度和抗弯强度，这为优化土聚物配方提供了宝贵的见解(East African Journal of Engineering, 2023)。
- Effect of Sodium Hydroxide, Liquid Sodium Silicate, Calcium Hydroxide, and Slag on the Mechanical Properties and Mineral Crystal Structure Evolution of Polymer Materials.: 本研究考察了氢氧化钠、液态硅酸钠、氢氧化钙和矿渣在聚合物材料力学性能和矿物晶体结构发展中的作用。研究表明，氢氧化钠对于创造强碱性环境至关重要，可以促进有益矿物晶体的形成，从而提高材料的抗压强度(Crystals, 2021)。
- Effects of Sodium Hydroxide and Calcium Hydroxide on the Phase Equilibria of Methane Hydrates.: 本研究探讨了氢氧化钠和氢氧化钙对甲烷水合物相平衡的影响。其结果提供了有关这些化合物如何影响水合物稳定性和形成的见解——这对于天然气储存和运输中的应用至关重要(SSRN Electronic Journal, 2022)。
聯結
分析報告
碳酸盐（Na₂CO₃形式）： ≤ 1.0 %
氯化物（Cl）： ≤ 0.012 %
硫酸盐（SO₄）： ≤ 0.01 %
重金属（以铅计）： ≤ 0.002 %
Al（铝）： ≤ 0.002 %
Fe（铁）： ≤ 0.002 %
法律資訊
訊號詞
Danger
危險聲明
危險分類
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
儲存類別代碼
8A - Combustible, corrosive hazardous materials
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
分析證明 (COA)
輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號，寫有 ‘Lot’或‘Batch’.。
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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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This has been suggested to put in our septic waste system to dissolve the tree roots which are growing into the system. Is this correct??
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This product is an R&D chemical for use in a laboratory setting. A quick web search led me to find products which are specifically recommended for the application you describe, but this product would not be recommended. The SDS mentions that this product is harmful to aquatic life, should not be allowed to enter drains, etc. Using this product outside of a laboratory setting is not intended. Please review the product SDS.
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