Specification
Product Name ERIOCHROME BLACK T
Synonyms 3-Hydroxy-4-[(1-hydroxy-2-naphthalenyl)
azo]-7-nitro-1-naphthalenesulfonic Acid,
Monosodium Salt; Mordant Black 11
CAS NO. 1787-61-7
Chemical Formula C20H12N3NaO7S
Formula Weight 461.38
Appearance Black Crystalline Powder
Structure
   
Tests    Limits
Solubility 0.1% (dist. Water)

- Red Solution

Absorptivity 1% / 1cm, at
(pH 10.0 Ammonia Buffer + 2ml
0.05 M.E.D.T.A. Solution) at λ max.623.0 nm
- 464
Loss on drying at 110°C (1hr)

- 0.89%

   
   
REVISED: 1-1-2012  
 
 
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