2,6-Dichlorophenolindophenol sodium salt, dark green powder indicator

Supplier: MP Biomedicals

Synonyms: Sodium 4-(3,5-dichloro-4-oxocyclohexa-2,5-dienylideneamino)phenoxide, Tillmans' reagent, 2,6-Dichloroindophenol sodium, 2,6-Dichloroindophenol sodium salt, 2,6-Dichloroindophenol sodium derivative

0215011801 0215011810 0215011825
ICNA0215011801EA 77.5 SGD
ICNA0215011801 ICNA0215011810 ICNA0215011825
2,6-Dichlorophenolindophenol sodium salt, dark green powder indicator
2,6-Dichlorophenolindophenol sodium salt

Indicator for vitamin C.


2,6-dichlorophenolindophenol sodium salt is a redox dye commonly used as a monitor of the light reactions in photosynthesis because it is an electron acceptor that is blue when oxidized and colorless when reduced. It is part of the Hill reagents family. DCPIP can also be used as an indicator for Vitamin C. If vitamin C, which is a good reducing agent, is present, the blue dye, which turns pink in acid conditions, is reduced to a colorless compound by ascorbic acid.


Freely soluble in water, alcohol; soluble in 0,1% (50% ethanol - clear blue solution), (ethanol + 1 N 1 ml Na₂CO₃.


Caution: Research Use Only (RUO).

Formula: C₁₂H₆Cl₂NNaO₂
MW: 290,08 g/mol
Storage Temperature: Ambient
CAS Number: 620-45-1

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Specification Test Results

Identity Test Passes
UV/VIS: λ max (water) 604 ± 5 nm
Moisture ≤12%

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