Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS) ≥80%, Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPY
Synonyms:
SPADNS, 2-(4-Sulphophenylazo)chromotropic acid trisodium salt, 4,5-Dihydroxy-3-(4-sulphophenylazo)-2,7-naphthalenedisulphonic acidtrisodium salt, 1,8-Dihydroxy-2-(4-sulphophenylazo)naphthalene-3,6-disulphonic acidtrisodium salt, Sulphanilic acid azochromotrope, 2-(p-sulphophenylazo)-1,8-Dihydroxy-3,6-Naphthalenedisulphonic acidtrisodium salt, Trisodium 1,8-Dihydroxy-2-(4-sulphophenylazo)naphthalene-3,6-disulphonate
M-Clarity™ quality level = MQ200
S9256-10G
S9256-25G
S9256-50G
S9256-10GEA
52.4
GBP
S9256-10G
S9256-25G
S9256-50G
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS) ≥80%, Sigma-Aldrich®
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS)
Sulfanilic acid azochromotrop. ≥80%
Formula:
C₁₆H₁₂N₂O₁₁S₃ MW: 570,40 g/mol Storage Temperature: Room Temperature |
MDL Number:
MFCD00003952 CAS Number: 23647-14-5 |
Specification Test Results
Appearance (Form) | Powder |
Infrared spectrum | Conforms to Structure |
Carbon | 26.0 - 35.0 % |
Nitrogen | 3.6 - 5.9 % |
E1% | ≥470 |
pH | 7.0 |
Lambda Max | 505 - 510 nm |
Purity (HPLC) | ≥80.0 % |
Solubility (Colour) | Red |
Solubility (Turbidity) 50 mg plus 5 mL, H2O |
Clear to Very Slightly Hazy |
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