SPADNS manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai, Sharjah, UAE, Gulf, Middle East, Muscat Oman, Kenya Africa. Get the best quality of SPADNS at a competitive price from us. We have ready stock of SPADNS in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.
SURAT CHEMICAL TAG::
SPADNS excellent quality manufacturer, exporter and supplier. SPADNS (4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene disulfonic acid, trisodium salt) is indicator for zirconium, thorium and colorimetric indicator for fluoride.
C.A.S. No.23647-14-5
M.F.C16H9N2Na3O11S3
M.W.570.42gm/mole
Specifications:
Dye Content (by Spectrophotometry)>80%
Solubility 0.1% (Dist. water)Clear solution
Absorption Maximum (water, at pH 7.0)?max505-510nm
Absorptivity (A1%/1cm in Dist. water, at pH 7.0 at ?max)>375
Loss on drying (110°C)<10%
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