FORMULA: Na2S2O3.5H2O
M. W. : 248.18
CAS NO.: 10102-17-7
DESCRIPTION: COLOURLESS COLUMNAR CRYSTALS OR WHITE GRANULAR;
EFFLORESCENT IN WARM AIR, SLIGHTLY DELIQUESCENT IN MOIST AND COLD AIR; THE
TEMPERATURE OF SOLUTION DROPS SHARPLY WHEN DIS-SOLVED IN WATER; SOLUBLE IN
AMMONIA (NH3), INSOLUBLE IN ALCOHOL. SPECIFIC GRAVITY:1.729(17℃);
MELTING POINT:48.45℃.
SPECIFICATIONS:
|
Na2S2O3.5H2O |
98% MIN. |
|
Na2S |
0.003%MAX. |
|
WATER INSOLUBLES |
0.01%MAX. |
|
IRON (AS Fe) |
0.003%MAX. |
|
PH (200g/L
SOLUTION) |
6.5-9.5 |
|
SIZE (GRAINS/G) |
50MAX |
USES: USED IN PHOTOGRAPHY, ALSO AS REDUCING AGENT FOR CHEMICAL MANUFACTURE.
IT CAN BE USED IN LEATHER AND TEXTILE INDUSTRIES, ETC.
PACKING: SUPERBAG, NET WEIGHT 1000KG.
H.S. NO.: 2832.3000