Silicotungstic acid

Cas：
12027-38-2

Molecular Structure：

MDL：
MFCD08690885

Molecular Formula：
SiO2·12WO3·26H2O；H4[Si(W3O10)4]·xH2O

Molecular Weight：
2878.17(anhydrousbasis)

Alias：
Tungstosilicic acid hydrate

Product order：

Name	Specifications	Packing	Price	Delivery
Silicotungstic acid	AR	25g	RMB 71.5	Consulting service
Silicotungstic acid	AR	100g	RMB 231	Consulting service
Silicotungstic acid	≥99.9% metals basis	25g	RMB 649	Consulting service

Character：
白色或略带黄色的晶体。溶于水、乙醇和乙醚。受热则溶于本身的结晶水，加热至600～650℃时分解。

Quality Standard：
品级Grade                               分析纯
                                        (AR)
干燥损失loss on ignition                ≤20%
水溶性solubility H2O:                   soluble0.1 g/mL, clear, colorless
氯chloride (Cl-):                       ≤200 ppm
硫酸根sulfate (SO42-):                  ≤100 ppm
  Ca:                                   ≤200 ppm
  Cd:                                   ≤50 ppm
  Co:                                   ≤50 ppm
  Cu:                                   ≤50 ppm
  Fe:                                   ≤50 ppm
  K:                                    ≤200 ppm
  Na:                                   ≤3000 ppm
  Ni:                                   ≤50 ppm
  Pb:                                   ≤50 ppm
  Zn:                                   ≤50 ppm

≥99.9% metals basis：

外观Appearance                          白色粉末或结晶
红外光谱鉴别Infrared spectrometry       Conforms to Structure
W                                       67.5% - 70.0%  (Gravimetric Analysis)
纯度Purity                              ≥99.9% Based On Trace Metals Analysis
ICP:                                    Confirms Si and W Components Confirmed
痕量金属分析Trace Metal Analysis        ≤1000ppm by ICP Atomic emission
(As、Ba、Ca、Co、Cr、Cu、Fe、Mg、Na、Ni、Pb、Sb、Sn、Ti、V)