- C.A.S. No.
- 4196–99–0
- C.I. NO.
- 26905
- M.F.
- C22H14N4Na2O7S2
- M.Wt.
- 556.49 gm/mole
Specifications:
- Dye Content (Spectrophotometry)
- >70%
- Solubility 0.1%(Water)
- Clear Solution
- Absorption maximum.(in water) λmax.
- 506–510 nm
- Absorptivity (A1%, 1cm in water at λmax on dried substance)
- 530–740
- Loss on drying (110oC)
- <15%
- Suitability for microscopy
- To pass test