Yellow powder
5 year ago
Bromocresol green (BCG) Cas NO. 76-60-8, as an important stain, has been widely used in the field of analysis. 1) CN201110395918.7 disclose a method for testing the content of free amines in NMP. The invention uses acid-base titration method to test the content of amines in NMP by preparing bromocrephenol green-methyl red indicating Chemicalbook agent. 2) CN201811547295.9 discloes a mixed indicator test paper for the determination of ammonia concentration in air and a preparation and detection method thereof, which belongs to the technical fields of environmental monitoring and industrial hygiene.
| tem | 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 |
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WHY CHOOSE US1. With a seasoned R&D team, we are experienced in producing multiple chemicals over the past ten years. 2. Tailor-made packing can also be available according to your specific requirment. 3. Fast response. Every inquiry will be answered within 24 hours. 4. Prompt delivery. We have worked with many forwarding companies for years. 5. Good quality, we have a strict quality control system. |
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