Wuxi Volksky New Materials Co.,Ltd.
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Cień:
Model No: VK-CHC-138
Marka: Volksky
Miejsce Pochodzenia: Chiny
Rodzaje: Barwniki pośrednie, Półprodukty z materiałów syntetycznych
CAS No.: 76-60-8
Name Product: Bromocresol green
MF: C21H14Br4O5S
EINECS No.: 200-972-8
Melting Point: 225 °C (dec.) (lit.)
Density: 0.79 g/mL at 20 °C
Purity: 99%
Appearance: Yellow Powder
Flash Point: 12 °C
Składowanie: no restrictions
Solubility: Solubility Sparingly soluble in water
Boiling Point: 626.0±55.0 °C(Predicted)
MOQ: 1pcs
Sample: Availiable
PH Value: 3.8～5.4
Shelf Life: 2 Years
MW: 698.01
| Jednostki sprzedaży | : | kilogram |
| Przykład obrazu | : |
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Bromokresol Green (BCG) CAS nr. 76-60-8, jako ważna plama, była szeroko stosowana w dziedzinie analizy. 1) CN201110395918.7 Ujawnij metodę testowania zawartości bezpłatnych amin w NMP. Wynalazek wykorzystuje metodę miareczkowania kwasowo-zasadowego do testowania zawartości amin w NMP poprzez przygotowanie bromokrefenolu zielonego-metylowo-czerwonego środka chemicznego. 2) CN201811547295.9 ujawnia mieszany papier testowy do oznaczania stężenia amoniaku w powietrzu oraz metody przygotowania i wykrywania, które należy do technicznych dziedzin monitorowania środowiska i higieny przemysłowej. 
| 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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FAQ
1、When will my goods be shipped? -- About 3〜5 days after prepayment is paid. 2、Can I get a sample? -- Free samples are available, but buyers needs to pay freight. 3、How long does it take for me to get a sample? -- It depends. Generally speaking, it is about 7-10 days. 4、Why is the quote offered different from the sticker price? -- As we know, prices of chemicals are not fixed, they fluctuate with the markets. 5、Is the quality of your products guaranteed? -- We have a professional R&D team, so every batch of our products is up to standard.
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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