Specification
Product Name CALCON CARBOXYLIC ACID
Synonyms 3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)
naphthalene-2-carboxylic acid
CAS NO. 3737-95-9
Molecular Formula C21H14N2O7S
Formula Weight 438.41
Appearance Dark Red Powder
Structure
   
Tests    Limits
Solubility 0.1% (95%EtOH) - Clear Yellow Solution
Absorptivity 1%/1cm,
(pH 8.8) at λ max.573.0 nm >1000
(pH 6.5) at λ max.435.0 nm


- >1000

- >490

Loss on Drying at 110°C (1hr) - <3%
   
   
REVISED: 1-1-2012  
 
 
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