1.07998
1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic acid trisodium salt
GR for analysis (reagent for fluoride, zirconium, thorium)
Synonym(s):
1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic acid trisodium salt, SPADNS
About This Item
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Quality Level
pH
6.0 (22 °C, 10 g/L in H2O)
solubility
220 g/L
bulk density
810 kg/m3
storage temp.
15-25°C
InChI
1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,17,19H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-15-;;;
InChI key
LSAWBVPBZOEGOT-ZOVWSQMSSA-K
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Analysis Note
Color change with zirconium: passes testpink - violet
Absorption maximum λmax. (buffer pH 7.0): 505 - 510 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; buffer pH 7.0; calc. on dried substance): 400 - 560
Loss on Drying (105°C): ≤ 10 %
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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