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| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Product Name: | Acid Brown 440 |
| Synonyms: | AcidBrownA;C.I.AcidBlack440;Brown PNR;C.I.Acid Brown 440;4-[[2,6-Dihydroxy-3-[(4-nitrophenyl)azo]-5-[[4-(phenylamino)-3-sulfophenyl]azo]phenyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid trisodium sal;Apollo Leather Brown PLA;C.I. 34908;Daedo Acid Brown PNR |
| CAS: | 93376-15-9 |
| MF: | C34H25N8NaO14S3 |
| MW: | 888.79 |
| EINECS: | |
| Product Categories: | |
| Mol File: | 93376-15-9.mol |
| Preparation | 5-Amino-2-(phenylamino)benzenesulfonic acid, 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid, 4-Nitrobenzenamine respectively diazotization and Coupled with resorcinol. |
| brown. Mainly used for leather color. |
| Raw materials | 4-Aminodiphenyamine-2-sulfonic acid-->Resorcinol-->8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate-->4-Nitroaniline |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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