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| | disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate Basic information |
| Product Name: | disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate | | Synonyms: | 1538 Brown;C.I.20285;Certicol Brown N Extra;Cetricol Brown RS;disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate;Disodium-4,4-(2,4-Dihydroxy-5-HydroxyMethyl-1,3-PhenyleneBisazo)-Di(Naphthalene-1-Sulfonate);Brown HT;1-Naphthalenesulfonic acid, 4,4-2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylenebis(azo)bis-, disodium salt | | CAS: | 4553-89-3 | | MF: | C27H18N4Na2O9S2 | | MW: | 652.56276 | | EINECS: | 224-924-0 | | Product Categories: | | | Mol File: | 4553-89-3.mol | ![disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate Structure](CAS/GIF/4553-89-3.gif) |
| | disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate Chemical Properties |
| Melting point | >300o C | | density | 0.816[at 20℃] | | vapor pressure | 0Pa at 25℃ | | storage temp. | Hygroscopic, Refrigerator, Under inert atmosphere | | solubility | DMSO (Slightly, Heated, Sonicated), Methanol (Slightly) | | form | Solid | | color | Pale Brown to Black | | Water Solubility | 99.418g/L at 25℃ | | Stability: | Hygroscopic | | LogP | 4.496 at 25℃ |
| Toxicity | LD50 oral in rat: > 2gm/kg |
| | disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate Usage And Synthesis |
| Uses | Chocolate Brown HT (CAS# 4553-89-3) is a synthetic organic food colourant, and a long-term carcinogen. | | Preparation | 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) diazo, and 4-(Hydroxymethyl)benzene-1,3-diol?coupled. | | Flammability and Explosibility | Nonflammable | | Properties and Applications | red light brown. Soluble in water for brown. The strong sulfuric acid for red purple, diluted chocolate brown for red precipitate to brown precipitation and the solution. Its water solution and strong hydrochloric acid for dark chocolate brown precipitation and the solution; Add sodium hydroxide solution for product red. |
| | disodium 4,4'-[[2,4-dihydroxy-5-(hydroxymethyl)-1,3-phenylene]bis(azo)]bisnaphthalene-1-sulphonate Preparation Products And Raw materials |
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