Pyrocatechol Violet
CAS:115-41-3 Product spec:qualified
MF: C19H14O7S
MW: 386.38
Bismuth (Bi) sensitivity test: qualified
Sensitivity test to acid and alkali: qualified
Water soluble test: qualified
Residue on ignition(as sulfate): 0.4%max
Direct Red 28
CAS:573-58-0 Product spec:qualified
MF: C32H22N6Na2O6S2
MW: 696.68
PH indicator range: 3.0(bluish violet)-5.2(red)
Water-insoluble test : qualified
Moisture: 5.0%max
Residue on ignition: 27%max
Acid Violet 19
CAS:3244-88-0 Product spec:qualified
MF: C20H17N3Na2O9S3
MW: 3585.53
Biological staining test:qualified
Acid Red 87
CAS:17372-87-1 Product spec:qualified
MF:C20H6Br4Na2O5
Cresol Red
CAS:1733-12-6 Product spec:qualified
MF: C21H18O5S
Basic Violet 14
CAS:632-99-5 Product spec:qualified
MF: C20H19N3.HCl
MW: 585.53
Solvent Red 43
CAS:15086-94-9 Product spec:qualified
Molecular Formula:C20H8Br4O5
Molecular Weight:364.92
Biological Stain Test: qualified
Thymol blue
CAS:76-61-9 Product spec:qualified
Molecular formula: C27H30O5S
Molecular weight: 466.60
PH indicator range: 1.2(red)---2.8(yellow)
8.0(yellow)---9.6(blue)
Residue on ignition (as sulfate): 0.3% max
Mass-absorption coefficient(Lcm..