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Sodium Thiosulfate
- group name
- Chemical Raw Materials
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- 1 piece
- brand name
- TSH
- update time
- Fri, 18 Nov 2011 13:20:20 GMT
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Min Order1 piece
Briefing
Grade Standard: Electron Grade, Industrial Grade
Purity: 99%min.
Detailed
Appearance: Colorness Columnar Crystal
Application: Major for Industry and photography...
Inspection Standard: HG/T 2328-2006.
|
ANALYSIS ITEMS |
SPECIFICATION |
RESULTS | ||
|
PREMIUM GRADE |
FIRST GRADE | |||
|
PURITY (Na2S2O3·5H2O) |
% ≥ |
99 |
98 |
99.15 |
|
PH VALUE (200 g/l liquor) |
% ≤ |
6.5-9.5 |
7.5 | |
|
SULPHIDE MASS FRACTION (basis as S) |
% ≤ |
0.001 |
0.003 |
0.0009 |
|
MATTER INSOLUBLE IN WATER |
% ≤ |
0.01 |
0.03 |
0.01 |
|
IRON MASS FRACTION (basis as Fe) |
% ≤ |
0.002 |
0.003 |
0.0018 |
|
APPEARANCE |
CLEAR MONOCLINIC CRYSTAL | |||
|
CONCLUSION |
PREMIUM GRADE | |||
General Use:
Its major use is in photography for dissolving silver halides from photographic emulsions;
Sodium thiosulfate is also used in the tanning of leather;
in bacteriological water assessment;
and in treating cyanide poisoning;
for automatic hand warmers.