791768

无水碳酸钠

anhydrous, free-flowing, Redi-Dri^™, ACS reagent, ≥99.5%

• 别名: 碳酸二钠盐, 纯碱, 苏打灰：
• 线性分子式: Na₂CO₃
• CAS号: 497-19-8
• 分子量: 105.99
• Beilstein: 4154566
• EC號碼: 207-838-8
• MDL號碼: MFCD00003494
• 分類程式碼代碼: 12352302
• NACRES: NA.21

属性

• 等級: ACS reagent; anhydrous
• agency: suitable for EPA 300
• 產品線: Redi-Dri^™
• 化驗: ≥99.5%
• 形狀: powder
• 品質: free-flowing
• 雜質: ≤0.005% silica; ≤0.01% insolubles
• 損耗: ≤1.0% loss on heating
• pH值: 12 (25 °C, 106 g/L)
• mp: 851 °C (lit.)
• 負離子痕跡: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.001%; sulfur compounds (as SO₄^2-): ≤0.003%
• 正離子痕跡: Ca: ≤0.03%; Fe: ≤5 ppm; K: ≤0.005%; Mg: ≤0.005%; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES 字串: O=C(O[Na])O[Na]
• InChI: 1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
• InChI 密鑰: CDBYLPFSWZWCQE-UHFFFAOYSA-L

说明

應用

• Denitrification mechanism of NaOH in the presence of carbon.: Explores the interaction between sodium carbonate and other chemicals in environmental applications, particularly focusing on denitrification processes important for water treatment (Li et al., 2005).


• Evaluation of capillary electrophoresis for determining the concentration of dissolved silica in geothermal brines.: Discusses the role of sodium carbonate in modifying sample pH for capillary electrophoresis, essential for accurate measurement of silica in complex geothermal fluids (Santoyo et al., 2005).

生化／生理作用

缓冲液成分，可用于去除外周膜蛋白。

法律資訊

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

安全信息

• 象形圖: GHS07
• 訊號詞: Warning
• 危險聲明: H319
• 防範說明: P264 - P280 - P305 + P351 + P338 - P337 + P313
• 危險分類: Eye Irrit. 2
• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable