SODIUM THIOSULFATE

 

SYNONYM: SODIUM HYPOSULFITE

 

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