CONGO RED (INDICATOR) (FOR MICROSCOPY) (C. I. NO. 22120)*

CONGO RED (INDICATOR) (FOR MICROSCOPY) (C. I. NO. 22120) CONGO RED (INDICATOR) (FOR MICROSCOPY) (C. I. NO. 22120)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
C0074700500 For Microscopy 573-58-0 C32H22N6Na2O6S2 696.65 3204.1421
60 Months

Physical Properties

Physical state at 20 °C

Solid

Colour

Brownish red powder

Odour

Odorless

pH value

8-9.5

Solubility in water [% weight]

Soluble in water

Specifications

Appearance:

 Brownish red powder

Loss on dryig (at 110°C):

 Max 5.0%

Sensitivity test:

 Passes test

Appearance of solution (1.0 g/L; water):

 almost clear to slightly turbid , red solution

Transition range at pH 3.0 to pH 5.2:

 Violet to orange red

Safety Information and Hazard Symbols

Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H350-H361d
Precaution Statement: P201-P281-P308 + P313
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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