四硼酸钠十水合物，Sodium tetraborate decahydrate；ACS reagent, ≥99.5%

别名：硼砂十水合物；十水合四硼酸钠；四硼酸钠水合物；十水四硼酸钠；Borax decahydrate, Sodium borate decahydrate

线性分子式: Na2B4O7 · 10H2O CAS号: 1303-96-4 分子量: 381.37 EC 号: 215-540-4 MDL编号: MFCD00149193 PubChem化学物质编号: 329824630 NACRES: NA.21

制造商品牌: 西格玛 Sigma-Aldrich

货号（SKU）: S9640

CAS号: 1303-96-4

MDL号: MFCD00149193

签订合同 √ 正规发票 √ 技术支持 √ 质量保障 √ 全程可追溯 √

目录价.SKU-Variant

25g
500g [+¥359.22]
2.5Kg [+¥1,207.61]
4X2.5Kg [+¥3,374.41]

¥543.19

数量:

说明

十水四硼酸钠是一种天然存在的材料，用作许多有机转化的催化剂或添加剂，例如Nef反应，Knoevenagel缩合，取代，加成，邻二醇的选择性甲基化和三甲基硅烷基炔的脱硅烷化。

一般描述

Sodium tetraborate decahydrate is a naturally occurring material used as a catalyst or additive for many organic transformations such as Nef reaction, Knoevenagel condensation, substitution, addition, selective methylation of vicinal diols, and desilylation of trimethylsilyl alkynones.

应用

Sodium tetraborate decahydrate can be used as a catalyst in the:

Regioselective thiolysis of 1,2-epoxides by using thiols to synthesize β-hydroxy sulfides.
Hetero-Michael addition of thiols with electron-deficient olefins to synthesize corresponding β-adducts.
Solvent-free Biginelli reaction to synthesize 3,4-dihydropyrimidin-2(1H)-ones.

It can also be used as an additive to prepare polypyrrole-borax composites with high dielectric properties.

属性

等级

ACS reagent

质量水平

200

蒸汽压

0.213 hPa ( 20 °C)

测定

≥99.5%

形式

powder or crystals

杂质

≤0.005% Insoluble matter

pH值（酸碱度）

9.15-9.20 (25 °C, 0.01 M in solution)

密度

1.73 g/mL at 25 °C (lit.)

痕量阴离子

chloride (Cl^-): ≤0.001%
phosphate (PO₄^3-): ≤0.001%
sulfate (SO₄^2-): ≤0.005%

痕量阳离子

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

SMILES string

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 key

CDMADVZSLOHIFP-UHFFFAOYSA-N

安全信息

象形图

GHS07,GHS08

警示用语：

Danger

危险声明

H319 - H360FD

预防措施声明

P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313

危险分类

Eye Irrit. 2 - Repr. 1B

储存分类代码

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

WGK

WGK 1

商品规格

属性名称	属性值
储存温度 Storage temp.	常温阴凉避光
全球实时库存 Availability √	美国St. Louis ≥ 20 \| 欧洲Eur. ≥ 16 \| 東京Tokyo ≥ 5 \| 香港与北京 ≥ 20

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