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S9640

Sigma-Aldrich

四硼酸钠 十水合物

ACS reagent, ≥99.5%

同義詞:

硼砂 十水合物, 硼酸钠 十水合物

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About This Item

線性公式:
Na2B4O7 · 10H2O
CAS號碼:
分子量::
381.37
EC號碼:
MDL號碼:
分類程式碼代碼:
12352300
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

品質等級

agency

suitable for SM 4500 - NH3

蒸汽壓力

0.213 hPa ( 20 °C)

化驗

≥99.5%

形狀

powder or crystals

雜質

≤0.005% Insoluble matter

pH值

9.15-9.20 (25 °C, 0.01 M in solution)

密度

1.73 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%

正離子痕跡

Ca: ≤0.005%
Fe: ≤5 ppm
heavy metals (as Pb): ≤0.001%

SMILES 字串

O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2

InChI

1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;

InChI 密鑰

CDMADVZSLOHIFP-UHFFFAOYSA-N

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一般說明

十水合四硼酸钠是一种天然存在的材料,可用作许多有机转化的催化剂或添加剂,如内夫反应、克内文纳格尔缩合反应、取代、加成、邻二醇的选择性甲基化和三甲基硅基炔酮的脱硅基化。

應用

十水四硼酸钠可作为催化剂用于:
  • 使用硫醇合成 β-羟基硫化物,对 1,2-环氧化合物进行区域选择性硫解。
  • 硫醇与缺电子烯烃的杂 Michael 加成,以合成相应的 β-加合物。
  • 无溶剂 Biginelli 反应,以合成 3,4-二氢嘧啶-2(1H)-酮。
还可作为添加剂制备具有高介电性能的聚吡咯-硼砂复合材料。

法律資訊

象形圖

Exclamation markHealth hazard

訊號詞

Danger

危險聲明

危險分類

Eye Irrit. 2 - Repr. 1B

儲存類別代碼

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

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)

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