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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: | CROCEIN SCARLET 7B |
| Synonyms: | CROCEIN SCARLET 7B;CI 27165;CI NO 27165;ACID RED 71;ACID ORANGE 12;CROCEIN SCARLET 7B C.I. NO. 27165;1-Naphthalenesulfonic acid, 7-hydroxy-8-2-methyl-4-(2-methyl-4-sulfophenyl)azophenylazo-, disodium salt;C.I. ACID RED 71) |
| CAS: | 6226-76-2 |
| MF: | C24H18N4Na2O7S2 |
| MW: | 584.53 |
| EINECS: | 612-981-8 |
| Product Categories: | |
| Mol File: | 6226-76-2.mol |
| Melting point | 181-188℃ |
| storage temp. | room temp |
| Colour Index | 27165 |
| form | Powder |
| color | red to brown |
| Water Solubility | Soluble in water |
| Safety Statements | 22-24/25 |
| WGK Germany | 3 |
| Uses | Crocein Scarlet 7B is used in Crowle’s reagent. The reagent is needed for observing latent fingerprints, particularly bloody prints. Dyes and metabolites. | |||||||||||||||||||||||
| 2′,3-Dimethyl-4-amino-4′-sulfoazobenzene?diazo, and 7-Hydroxynaphthalene-1-sulfonic acid coupling. | ||||||||||||||||||||||||
| Biological Activity | Crocein Scarlet 7B (acid red 71) is used in Crowle′s reagent. The reagent is needed for observing latent fingerprints, particularly bloody prints. | |||||||||||||||||||||||
red. Soluble in water for product red, soluble in ethanol for red orange. The strong sulfuric acid for blue, pink is diluted. In water solution to join strong hydrochloric acid for product red; Add thick sodium hydroxide solution for shallow red sauce.
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| Raw materials | 7-hydroxynaphthalene-1-sulphonic acid-->6-[(4-amino-m-tolyl)azo]toluene-3-sulphonic acid |
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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