Sodium tetraborate

Molecular Structure：

MDL：
MFCD00081185

Molecular Formula：
Na2B4O7

Molecular Weight：
201.22

Alias：
无水硼砂，酸式硼酸钠，焦硼酸钠，硼氧化钠，熔融硼砂，四硼酸钠 Borax, fused sodium borate Borax Anhydrous

Product order：

Name	Specifications	Packing	Price	Delivery
Sodium tetraborate	AR	500g	RMB 74.8	促销
Sodium tetraborate	AR	1kg	RMB 145.2	促销
Sodium tetraborate	99.998%	5g	RMB 209	现货
Sodium tetraborate	99.998%	25g	RMB 759	现货
Sodium tetraborate	99.998%	100g	RMB 2189	现货
Sodium tetraborate	99.998%	500g	RMB 8778	现货

Character：
无臭、无色、半透明、味咸的晶体或白色晶状粉末。微溶于乙醇，微溶于冷水，易溶于热水。
沸点：1575℃
熔点：741℃
折光率: 1.501
密度： 2.367

Quality Standard：
AR

外观Appearance                          白色结晶
纯度Purity                              ≥95.0%
重金属Heavy metals (as Pb)              <50 ppm
水中不溶物Insoluble matter in H2O       <0.05 %
痕量分析Trace analysis :
Cl                                     < 500 ppm
PO4                                    < 50 ppm
Ca                                     < 200 ppm
Fe                                     < 50 ppm
Cu                                     < 50 ppm
K                                      < 500 ppm
Mg                                     < 200 ppm
Ni                                     < 50 ppm
Pb                                     < 50 ppm

99.998% metals basis:

外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.998% Based on Trace Metals Impurities
Titration by NAOH (% B)                 21.0 - 22.0 %
ICP:                                    Confirms Na and B Components Confirmed
痕量金属分析total metallic impurities   ≤30ppm by By ICP and
  AA Combined
(Ba、Ca、Cr、Cu、Fe、Mg、Zn、Li、K、Rb、Cs)

Storage：
易吸潮，密封保存。
供医药、冶金、鞣革、陶瓷、纺织及制食物保存剂用。