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Ammonium thiosulfate

Molecular Structure:
MDL:
MFCD00015965
Molecular Formula:
H8N2O3S2;(NH4)2S2O3
Molecular Weight:
148.21
Alias:
铵海波 ammonium hyposulfite ammonium thiosulate
Product order:
Name Specifications Packing Price Delivery
Ammonium thiosulfate 60%溶液 500g RMB 88 Consulting service
Ammonium thiosulfate 99% 100g RMB 209 Consulting service
Ammonium thiosulfate 98% 500g RMB 649 Consulting service
Character:
无色透明液体或白色结晶。易吸湿。结晶体相对密度1.679,极易溶于水,100℃时溶解度103.3g/100ml水。60%水溶液的pH为 6.5~7.0。不溶于醇、醚,微溶于丙酮。加热至150℃则分解形成亚硫酸铵、硫黄、氨、硫化氢及水。空气中十分不稳定,在氨气中稳定。
Quality Standard:
项目                                     化学纯  
                                          (CP)
含量Assay                                50-60%
亚硫酸铵ammonium sulfite                 ≤1.0%
碱度alkalinity                           ≤0.4%
重金属Heavy metals(以铅计)               ≤0.002%
铁Iron(Fe)                               ≤0.001%
硫化物sulfide(以硫计)                    ≤0.0002%
灼烧残渣Ignition residue                 ≤0.2%

99%:

外观Appearance                          白色结晶、粉末或结晶粉末
X-衍射分析X-RAY DIFFRACTION             Conforms
纯度Purity                              98.5% - 101.5% (碘量分析)  

Storage:
密封保存。
感光工业用作照相定影剂,较钠盐更易溶解卤化银的乳膜,具有水洗时间短而银回收容易的优点,还用作镀银电镀浴的主要组分、金属表面的清净剂、铝镁金浇铸保护剂。在医药上用作杀菌剂、分析试剂。 
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