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1.07998

Supelco

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

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About This Item

Empirical Formula (Hill Notation):
C16H9N2Na3O11S3
CAS Number:
Molecular Weight:
570.41
MDL number:
UNSPSC Code:
12352107
EC Index Number:
245-803-9
NACRES:
NB.21

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

Analysis Note

Identity (UV/VIS-Spectrum): passes test
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 %

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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