Code	Pack Size	Price
453S1	25g	£7.49	Out of Stock

Product Info
CAS-Number: 573-58-0
In Stock: No
Hazchem: No

Documents

Congo red

Other names: C.I. 22120, Direct Red 28, Disodium 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalene-1-sulphonate), cobalt monosulfate heptahydrate,
Formula: C₃₂H₂₂N₆Na₂O₆S₂
CAS No: 573–58–0
EINECS No: 209–358–4
Appearance: red brown powder
Mol weight: 696.66 g mol?1
Density: 2.03 g/cm³
Solubility: soluble in water
Melting Point: 360 C

Acid-Base indicator – congo red

Approximate pH range for color change: 3.0–5.0
Color of acid form: blue
Color of base form: red

Keywords:

Congo red, where to buy Congo red, Congo red msds, 573-58-0, C.I. 22120, C32H22N6Na2O6S2, Direct Red 28, Disodium 3 3-[[1,1-biphenyl]-4 4-diylbis(azo)]bis(4-aminonaphthalene-1-sulphonate), 209-358-4,