- C.A.S. No.
- 603–45–2
- C.I. NO.
- 43800
- M.F.
- C19H14O3
- M.W.
- 290.32 gm/mole
Specifications:
- Dye content
- >85%
- Solubility 0.1% (Ethanol)
- Clear solution
- Absorption maximum (Ethanol+5ml 1N HCl) λmax.
- 482–487 nm
- Absorptivity (A1%/1cm, in Ethanol+5ml 1N HCl at λmax)
- >2000
- Loss on drying
- <3%