Product name: Bromocresol Purple
No.:A034
CAS No.: 115-40-2
M F: C21H166BrO5S
Property: Light yellow or light rosy crystalline powder, soluble in ethyl alcohol and alkali solution, insoluble in water.
Molecular weight: 540.22
Use: Acid-base indicator
Technical index |
Item: | Result |
Soluble test in ethyl alcohol | Qualified |
Ignition residue% | ≤0.1 |
Maximum absorption wavelength(nm) | λ1 (PH5.2) 427-431
λ2 (PH6.8) 588-591 |
Mass-absorption coefficient (L/cm?g) | α1(λ1PH5.2，dry sample) 40-45
α2 (λ2PH6.8，dry sample) 100.0-110.0 |
Drying loss% | ≤0.5 |