bromocresol green cas 76-60-8

Description

Bromocresol green
Bromocresol green quick Details
Chemical Name:Bromocresol green
CAS: 76-60-8
Molecular Formula:C21H14Br4O5S
Molecular weight:698.01
Appearance: Yellow crystal
Bromocresol green Specifications
PH Color change interval: 3.8 (yellow-green)-5.4 (blue)
Maximum absorption wavelength (nm): λ1(PH3.8)440-445
λ2(PH5.4) 615-618
Mass absorption coefficient, L/(cm.g): α1(λ1, PH3.8 dry sample)
α2(λ1, PH5.4 dry sample)
Ethanol dissolved test: Pass test
Loss on drying: ≤3.0
Residue on ignition (as SO4)%’: ≤0.25
Bromocresol green typical Properties

Item
Specifications
Results

Assay (%)
≥98.5
98.9

PH Color change interval
3.8 (yellow-green)-5.4 (blue)
Pass test

Maximum absorption wavelength (mm)
λ1 (PH3.8)440-445
442

λ2 (PH5.4) 615-618
616

Mass absorption coefficient, L/(cm.g)
α1(λ1, PH3.8 dry sample) 24-28
25

α2(λ1, PH5.4 dry sample) 53-58
55

Ethanol dissolved test
Pass test
Pass test

Loss on drying
≤3.0
2.1

Residue on ignition (as SO4)%
≤0.25
0.25

Conclusion
The results conforms with HG/T4017-2008 indicator

Bromocresol green Application
This product is used as acid-base indicator and cell staining agent.
Bromocresol green Packing
1kg/bag 25kg/drum
Bromocresol green Storage
Stored in cool, dry and ventilation place.