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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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| Color: | White To Light Yellow Powder To Crystaline | Purity: | 98% |
| Molecular Weight: | 277.07 | H-Bond Acceptor: | 3 |
| Molecular Formula: | C12H5BrO3 | Application: | Fine Chemical Intermediate; Dyestuff Intermediates |
| High Light: | 4Br Fluorescent Whitening Agent,277.07 21563-29-1,277.07 Fluorescent Whitening Agent |
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4-Bromo-1,8- naphthalic anhydride CAS 21563-29-1 Fine Chemical Dyesuff 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 with 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:
5. Patent:
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