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Phenol Red IND Grade Reagent

Cas Number:143-74-8
Formula: C19H14O5S
Molar Mass:354.38
EC Number:205-609-7

Quantity:
  • IND
  • LABOR
  • 404933125

Phenol Red IND Grade Reagent


Cas Number:143-74-8

Formula: C19H14O5S

Molar Mass:354.38

EC Number:205-609-7


Properties:

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.


Usage:

Acid-base indicator. Measure the total amount of blood carbon dioxide. An indicator for preparing a disaccharide iron urea medium.


Packing:

500g/25kg





Item of Analysis

Standard

pH discoloration domain

1.2(Orange)~3.0(Yellow)

6.5(Brown yellow) ~8.0(Purple red)

Greatest absorption wavelength,λ1(pH1.2)/nm

503~506

Greatest absorption wavelength,λ2(pH3.0)/nm

430~435

Greatest absorption wavelength,λ3(pH6.5)/nm

430~435

Greatest absorption wavelength,λ4(pH8.0)/nm

557~560

Quality absorption coefficient,α11, pH1.2 dry sample)/[L/( cm·g)]

110~123

Quality absorption coefficient,α22,pH3.0 dry sample)/[L/( cm·g)]

60~68

Quality absorption coefficient,α33,pH6.5 dry sample)/[L/( cm·g)]

62~72

Quality absorption coefficient,α44,pH8.0 dry sample)/[L/( cm·g)]

115~130

Loss on drying,%

1.0 max

Residue on ignition(as SO4),%

0.2 max

Solubility in alka

to pass test



Not a hazardous substance or mixture.


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