CONGO RED INDICATOR
CONGO RED INDICATOR For Microscopy
C.I.No.22120Congo red is used to stain microscopic preparates, especially as a cytoplasm and erythrocyte stain.
Short Name: CONGO RED INDICATOR
Synonym: Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y
Basic Details
Article No.
LG1480
Grade
For Microscopy
Purity
CAS No.
573-58-0
HS Code
3204.1421
Shelf Life
60 Months
Packings Avialable
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
Chemical 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 & Hazard Symbols
Symbol
GHS08
Signal Word
Danger
Hazardous Statement
H350-H361d
Precaution Statement
P201-P281-P308 + P313