CONGO RED INDICATOR For Microscopy

C.I.No.22120 Congo red is used to stain microscopic preparates, especially as a cytoplasm and erythrocyte stain.
 Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y

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Article No.
02930
Grade
For Microscopy
Purity
CAS No.
573-58-0
Molecular Formula
C32H22N6Na2O6S2
Molecular Weight
696.65
H.S. Code
3204.1421
Shelf Life
60 Months
MSDS
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Certificate of Analysis (COAs)
 

 

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

Packings

  • 1PB1200060

    25 g (00025)

  • 1PB1200200

    100 g (00100)

  • 1000 g (01000)

 

Specifications

Appearance Brownish red powder
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
Loss on drying (at 110°C) Max 5.0%
Sensitivity test Passes test

Safety Information and Hazard Symbols

Health Hazard
Symbol: GHS08
 Signal Word: Danger
 Hazardous Statement: H350-H361d
 Precaution Statement: P201-P281-P308 + P313
Revision Date : 28-Sep-2016
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