Specification
Product Name TROPAEOLIN O
Synonyms Acid orange 6; Chrysoin; Resorcinol yellow
CAS NO. 547-57-9
C.I. NO. 14270
Molecular Formula C12H9N2NaO5S
Formula Weight 316.27
Appearance Dark-orange to rust-colored powder
Structure
   
Tests    Limits
Lambda max.

- 490nm (in 0.1N Sodium Hydroxide)

Dye content

- ~65%

Visual Transition Interval

- From pH 11.0 (yellow)
To pH 12.7 (red)

Solubility (10mg/ml 1N NH4OH) - Clear, red brown solution
   
   
REVISED: 1-1-2012  
 
 
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