Congo red, Certified, 10 gram

Congo red is an organic compound, the sodium salt of 3,3′-([1,1′-biphenyl]-4,4′-diyl)bis(4-aminonaphthalene-1-sulfonic acid). It is an azo dye. Congo red is water-soluble, yielding a red colloidal solution; its solubility is greater in organic solvents.

Product Identifier

CAS No. : 573-58-0

EC No. : 209-358-4

C.I. No. : 22120

Molecular Formula : C₃₂H₂₂Na₂N₆O₆S₂

Molecular Weight : 696.66

HS Code : 3212 90 90

Storage : Below 30°C

Shelf life : 4 years

Technical Specification

Appearance : Red to brown powder

Solubility : 20 ppm in water yields clear to slightly turbid solution

Visual pH Transition : pH 3.0 (violet) - pH 5.2 (Orange-red)

Absorption maxima : 497 - 500 nm (20 ppm in water at pH 5.2)

Loss on drying (at 105°C, 2 hr) : <= 8.0%

Note :

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Congo red, Certified, 10 gram - ABL

Congo red, Certified, 10 gram - ABL

Rp 825.740

Deskripsi