三氧化钨CAS1314-35-8

CAS:1314-35-8
Molecular formula:O3W
分子量：231.84
外观：淡黄色粉末
EINECS：215-231-4

同义词：CI77901;TUNGSTENTRIOXIDE99.999%;TUNGSTENTRIOXIDE,99.5%;钨(VI)的氧化物(99.9994%W)PURATREM;钨(VI)的氧化物(Chemicalbookmin.99.8%-W)

What is Tungsten trioxide CAS 1314-35-8？

Tungsten trioxide CAS 1314-35-8 and blue tungsten oxide are two common tungsten oxides at present. Tungsten trioxide is also known as tungsten oxide and has the chemical formula WO3. Light yellow triclinic powder crystal. When the temperature is higher than 740°C, it transforms into an orange tetragonal crystal, and returns to its original shape after cooling. It is stable in air, with a melting point of 1473°C, a boiling point higher than 1750°C, and a relative density of 7.16. Tungsten trioxide is the most stable type of tungsten oxide. It is insoluble in water and inorganic acids except hydrofluoric acid. It can be dissolved in hot concentrated sodium hydroxide solution and ammonia water to form soluble tungstate. When the temperature is higher than 650℃, it can be reduced by H2, and at 1000~1100℃, it can be reduced by C to obtain tungsten powder.

规格

项目	标准	结果，
WO₃	≥99.9%	99.95%
Pb	≤0.0001%	0.0001%
Bi	≤0.0001%	0.0001%
Sb	≤0.0005%	0.0004%
As	≤0.005%	0.005%
Fe	≤0.005%	0.005%
Al	≤0.0005%	0.0005%
Si	≤0.001%	0.0009%
Ni	≤0.0007%	0.0006%
Ca	≤0.001%	0.001%
Mg	≤0.0007%	0.0005%
Mo	≤0.02％的	0.018%
K	≤0.005%	0.005%
Na	≤0.005%	0.005%
Cu	≤0.0003%	0.0003%
Mn	≤0.001%	0.0005%
P	≤0.0007%	0.0006%
S	≤0.0007%	0.0005%

应用

使用钨金属、合金钢、防火织物等等，并用于陶瓷行业
用作分析试剂以及还使用的准备金属钨及其盐
用作原材料，用于制作钨金属。用于制造碳化钨、绘图钨丝、粉末冶金，使x-射线屏幕和防火料。它也可以作为着色剂和分析试剂，用于陶瓷。
它可以用作原材料，用于制作钨金属，使得烧结碳化物、切割工具、模具并绘制的钨丝。它还可用于粉末冶金。它还可用于X射线的屏幕和防火料，以及为着色剂和分析的陶瓷。试剂等。
蓝色氧化钨是用于生产钨粉，掺杂钨粉、钨条、钨棒，.... 和烧结碳化物，等等。黄色氧化钨是使用电极和生产的其他钴产品、气压计和湿度计.

Tungsten-trioxide-application