PERAMETERS
GRADE
TECHNICAL GRADE-I
SUPERFINE GRADE-II
PROCESS    SODA ASH PROCESS    CAUSTIC PROCESS
CHEMICAL FORMULA    Na2 S O3    Na2 S O3
CAS No    7757-83-7    7757-83-7
MOLECULAR WT    126.04    126.04
ASSAY As Na2 S O3    1) 98 to 99 (By Iodometry Method)
   1) 94 to 96% (By Iodometry Method)
    2) 70 to 75 (By Formaldehyde Method).    2)94 to 96% By Formaldehyde Method).
APPEARANCE    WHITE/OFF WHITE CRYSTALLINE POWDER    WHITE COLOUR CRYSTALLINE POWDER
PH IN 10% SOLUTION AT 30C    6.0 TO 7.5    9.0 TO 10.5
SOLUTION IN 10% DISTILLED WATER    HAZY PALE YELLOW    CLEAR & COLOURLESS
IRON (As Fe)    100 PPM MAX    20 PPM MAX
HEAVY METALS (As Pb)    100 PPM MAX    10 PPM MAX
MATTER INSOLUBLE IN WATER    0.15% MAX    0.05% MAX
FREE ALKALI    2.00% MAX    0.15% MAX
FREE ACIDITY(AS Na H SO3)    20 TO 30%    NIL
PACKING    50 KG BAG WITH LINER    50 KG BAG WITH LINER
USES    1. PAPER
   2. EFFLUENT TREATMENT
   3. DETERGENTS
   4. DYES INTERMEDIATES.
   1.PAPER
   2. EFFLUENT TREATMENT
   3. DETERGENTS
   4. DYES INTERMEDIATES.
TDS
MSDS