C27H30O5S  M.W : 466,60 
 CAS : 76-61-9 
 EC : 200-973-4 
P : P102-P202 Specifications :
- Appearance  Brownish green powder
- Acidic transition range pH  1.2
- red to yellow 
- Alkaline transition range pH  8
- yellow to blue 
- Loss on drying  ? 10%
- Dye content  ? 95%
packaging: glass bottle, volume: 5 g, pcs per sales unit: THBL-00D-005