Congo red indicator grade

Supplier: Thermo Scientific
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Avg. Ratings: 0.0 out of 5

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Synonyms: Sodium 3,3'-([1,1'-biphenyl]-4,4'-diylbis(diazene-2,1-diyl))bis(4-aminonaphthalene-1-sulphonate)Direct Red 28Disodium 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalene-1-sulphonate)CI 22120

ACRO110501000EA 32 GBP
ACRO110501000 ACRO110505000
Congo red indicator grade
Congo Red
Formula: C₃₂H₂₂N₆Na₂O₆S₂
MW: 696.67 g/mol
Melting Pt: >360 °C
Storage Temperature: Ambient
MDL Number: MFCD00004028
CAS Number: 573-58-0
EINECS: 209-358-4
Merck Index: 12,02562

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Specification Test Results

Appearance Dark red to red-brown Powder
Infrared spectrum Conforms
UV spectrum Complies
Solubility (0.1 % in water) Clear
Visual transition interval from pH 3.0 (violet) to pH 5.2 (red-orange)

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