Phenol Red IND Grade Reagent
Bright red to deep red crystal or fine crystalline powder. It is stable in the air. 1 g can be dissolved in about 1300 ml of water, about 350 ml of ethanol, and 500 ml of acetone. It is also soluble in red hydroxide or alkali carbonate solution, reddish, and azeotrope with zinc powder. And it is almost insoluble in ether and chloroform. The maximum absorption wavelength is 557 (360) nm. Irritating.
Acid-base indicator. Measure the total amount of blood carbon dioxide. An indicator for preparing a disaccharide iron urea medium.
Item of Analysis
pH discoloration domain
6.5(Brown yellow) ~8.0(Purple red)
Greatest absorption wavelength,λ1(pH1.2)/nm
Greatest absorption wavelength,λ2(pH3.0)/nm
Greatest absorption wavelength,λ3(pH6.5)/nm
Greatest absorption wavelength,λ4(pH8.0)/nm
Quality absorption coefficient,α1(λ1, pH1.2 dry sample)/[L/( cm·g)]
Quality absorption coefficient,α2(λ2,pH3.0 dry sample)/[L/( cm·g)]
Quality absorption coefficient,α3(λ3,pH6.5 dry sample)/[L/( cm·g)]
Quality absorption coefficient,α4(λ4,pH8.0 dry sample)/[L/( cm·g)]
Loss on drying,%
Residue on ignition(as SO4),%
Solubility in alka
to pass test
Not a hazardous substance or mixture.