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Product Details:
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| CAS NO.: | CAS NO.81-86-7，21563-29-1 | Product Name: | 4-Bromo-1,8- Naphthalic Anhydride |
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| Type: | Fine Chemical Intermediate; Dyestuff Intermediates | Color: | White To Light Yellow Powder To Crystaline |
| Purity: | 98% | H-Bond Acceptor: | 3 |
| Molecular Weight: | 277.07 | Molecular Formula: | C12H5BrO3 |
| Usage: | Fluorescent Yellow And Orange Dyes | Solubility: | Insoluble In Water And Dilute Acid, Soluble In Dilute Alkali And Become Sodium Salt, Soluble In Concentrated Nitric Acid, Slightly Soluble In Organic Solution |
| Highlight: | 21563-29-1 dyestuffs intermediates,4Br dyestuffs intermediates,C12H5BrO3 Fluorescent dye Intermediate |
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CAS No.81-86-7 Fluorescent Yellow Dyestuff Intermediate
1. Product Description:
4-Bromo-1,8-Naphthalic Anhydride is a kind of new intermediate of fluorescent yellow & orange dyes and fluorescent whitening agent. In the industry of dyestuff, raw materials of high quality play an important role in the whole production procedure. It is mainly used for the preparation of fluorescent yellow, fluorescent orange, and other dyes.
On the other hand, 4-Bromo-1,8-Naphthalic Anhydride is also used as an important intermediate of fluorescent brightener especially for fluorescent polymers. Fine Chemical Intermediate and Dyestuff Intermediates are its main application ranges.
2. Specification:
| Product Name | 4-Bromo-1,8-Naphthalic Anhydride |
| CAS Number | 81-86-7,21563-29-1 |
| Appearance&Physical State | Off-white to beige and faint brown to light brown powder |
| Purity | 98% |
| Soluble | higher solubility in acetone, lowest solubility in the methanol and ethanol |
| Melting Point | 217-219ºC |
| Density | 1.812 g/cm3 |
| Molecular Weight | 277.07 |
| Storage Condition | well-closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. |
| Use | Fine Chemical Intermediate; Dyestuff Intermediates;Mainly used for the preparation of fluorescent yellow, fluorescent orange and other dyes. |
3. Structural Formula:
4. Catalogue:
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