Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS), GR zA, Supelco®

Supplier: Merck

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

MQ100

1.07998.0025
1.07998.0025EA 230 GBP
1.07998.0025
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS), GR zA, Supelco®
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS)

Reagent for Fluoride, Zirconium, Thorium

Formula: C₁₆H₁₂N₂O₁₁S₃
MW: 570.40 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00003952
CAS Number: 23647-14-5
EINECS: 245-803-9

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Specification Test Results

Solubility 220 g/l (22 °C)
Molar Mass 570.4 g/mol
Bulk Density 810 kg/m3
pH 6.0 (10 g/l, H2O, 22 °C)
HS Code 2927 00 00
pH value 6,0
Bulk density 810 kg/m3
Storage temperature +15...+25 °C
Identity passes test
Color change with zirconium passes test pink - violet
Absorption maximum ⋋max 505 - 510 nm
Loss on drying ≤10 %

SPECIFICATIONS

Environmentally Preferable

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