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Chlorazol Black E is an azo dye. Chlorozol Black E is a chitin-specific stain and used to detect fungal filaments. Chlorazol Black E (Direct Black 38) can induce unscheduled DNA synthesis in liver and micronucleus in bone marrow of rats in vivo.
Chlorazol Black E (Direct Black 38) is slightly soluble in water for green light black, and adequate soluble in alcohol for green light blue-black. The strong sulfuric acid is a deep red in blue, diluted Purple dark reddish brown for to red light black precipitation; In nitric acid solution for yellow brown; In strong hydrochloric acid for dark red light black solution. For cellulose fiber dyeing, the dye absorbency is very good.
| Molecular Weight | 781.73 |
| Formula | C34H25N9Na2O7S2 |
| CAS Number | 1937-37-7 |
| Form | Solid |
| Solubility (25°C) | Water 5 mg/mL DMSO 10 mg/mL |
| Storage | 4°C, protect from light, dry, sealed |
[4] H E WILCOX. Stain Technol. STAINING PLANT TISSUES WITH CHLORAZOL BLACK E AND PIANESE III-B
[5] L Kass. Am J Clin Pathol. Staining of granulocytic cells by Chlorazol black E
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