氟化亞錫 Stannous flouride
分子式:H2F2Sn 分子量:158.7227
用 途:用于牙膏生產(chǎn),以保護牙齒防止鈣被溶出。日化行業(yè)用,減少藥物過敏。用于釬焊鋁合金的軟釬劑。用作光譜純試劑
性 質(zhì):白色單斜晶系結晶。熔點215℃。沸點850℃。溶于冷水中。在水中易水解和氧化。
CAS NO.:7783-47-3
項目
ITEM
指標
電子級
醫(yī)藥級
含量Assay %
99
94
錫(Sn) %
74
71.2
氟 F %
23.5-24.8
22.3-25.5
銻(Sb)ppm %
30
50
鉛(Pb)ppm %
10
10
砷(As)ppm %
1
3
汞(Hg)ppm
1
2
鐵(Fe)ppm
5
10
硅(Si)ppm
50
50
PH(0.4%水溶液)
2.8-3.5
2.8-3.5
干燥失重(105℃/4H)
0.2
0.2
Molecular formula:H2F2Sn Molecular weight:158.7227
Application:Used in toothpaste production to protect teeth from calcium dissolution. Used in the daily chemical industry to reduce drug allergy. A solder used to braze aluminum alloys.
Property:White monoclinic crystals. The temperature of 215 ° C. The boiling point of 850 ° C. Soluble in cold water and hydrofluoric acid. It is easily hydrolyzed in water.
CAS NO.:7783-47-3