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Congo Red IND Grade Reagent

Cas Number:573-58-0
Formula: C32H22N6Na2O6S2
Molar Mass:696.66
EC Number:209-358-4

Quantity:
  • IND
  • LABOR
  • 405633122

Congo Red IND Grade Reagent


Cas Number:573-58-0

Formula: C32H22N6Na2O6S2

Molar Mass:696.66

EC Number:209-358-4


Properties:

Brownish red powder. It is soluble in water, ethanol, slightly soluble in acetone, almost insoluble in ether. The maximum absorption wavelength (pH 7.3) is 488 nm (E1%1 cm595). The median lethal dose (rat, vein) is 190 mg/kg.


Usage:

Acid-base indicator, pH :3.0 (blue-violet) ~ 5.0 (red). The hydrochloric acid and paper acidity in the gastric juice can be measured. Determination of boric acid, cyanide. Additive for biological media. Biological staining, such as embryonic sectioning, plant mucin, cellulose, elastic tissue, etc.


Packing:

500g/25kg





Item of Analysis

Standard

pH discoloration domain

3.0(Blue purple)~5.2(Red)

The transparency of the indicator solution

to pass test

Insoluble in water,%

1.0 max

Moisture,%

5.0 max

Residue on ignition(as SO4),%

27.0 max



Symbol 

Signal word 

Danger

Hazard statement

H350


H361

Precautionary statements—Prevention

P201


P202


P280

Precautionary statements—Response

P3008+P313

Precautionary statements—Storage

P405

UN No.

No Information

Flash point

No Information




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