NILE CHEMICALS
SPADNS
GR
SPECIFICATION
2( p-Sulphophenylazo )
1,8-dihydroxynaphthalene-3,6-disulphonic
acid trisodium salt
C
16
H
9
N
2
O
11
S
3
Na
3
M.W.
570.42
( A complexometric indicator for
zirconium and thorium and fluoride )
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