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Eriochrome Black T IND Grade Reagent

Cas Number:1787-61-7
Formula: C20H12N3NaO7S
Molar Mass:461.38
EC Number:217-250-3

Quantity:
  • IND
  • LABOR
  • 401633125

Eriochrome Black T IND Grade Reagent


Cas Number:1787-61-7

Formula: C20H12N3NaO7S

Molar Mass:461.38

EC Number:217-250-3


Physicochemical properties:

Brownish black powder. It can be dissolved in hot water, cooled to a reddish brown solution, slightly soluble in ethanol and acetone. In the case of excessive hydrochloric acid, it forms a brown-purple precipitate, and when it is dark blue with sodium hydroxide, it turns red. It is dissolved in concentrated sulfuric acid to form a blue-black solution, which is diluted to form a brown precipitate. It will turn into the orange solution when concentrates nitric acid .


Usage:

An indicator for measuring water hardness. Complex indicator. Determination of calcium, magnesium, barium, indium, manganese, lead, bismuth, antimony, zinc and zirconium.


Packing:

500g/25kg





Item of Analysis

Standard

Sensitivity test

to pass test

Solubility in water

to pass test



Symbol 

Signal word 

Warning

Hazard statement

H411

Precautionary statements—Prevention

P273

Precautionary statements—Response

P391

UN No.

No Information



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