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Product Delivery Locations: 
Kattupalli Port ( L & T Shipbuilding Limited shipyard ), Ennore Port ( Coromondel International Limited Port Area ), Chennai Port, Mugaiyur port, Thiruchopuram port, Silambimangalam Shipyard, Parangipettai port, PY-03 Oil Field, Kaveri port, Vanagiri port, Thirukkadaiyur port, Thirukkuvalai port, Punnakkayal port, Udangudi port, Manappad port, Koodankulam port, Chettinad Tharangambadi Port, Mathur SIDCO Industrial area, Sipcot Industrial Park Malayambakkam


Product Description: 

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.

Product Technical Specification: 
C.A.S. No. 23647-14-5
M.F. C16H9N2Na3O11S3
M.W. 570.42gm/mole


Dye Content (by Spectrophotometry) >80%
Solubility 0.1% (Dist. water) Clear solution
Absorption Maximum (water, at pH 7.0)?max 505-510nm
Absorptivity (A1%/1cm in Dist. water, at pH 7.0 at ?max) >375
Loss on drying (110°C) <10%
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