| CHROMOTROPE 2B Basic information |
| Product Name: | CHROMOTROPE 2B |
| Synonyms: | 2,7-Naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo-]-,disodiumsalt;7-naphthalenedisulfonicacid,4,5-dihydroxy-3-[(4-nitrophenyl)azo]-disodium;AcidRed176(16575);Chromotropicacid2B;C.I.Acid Red 176;C.I.Mordant Black 93;Chromotrope Red 4B;Sodium 2-(p-nitrophenylazo)chromotropate |
| CAS: | 548-80-1 |
| MF: | C16H9N3Na2O10S2 |
| MW: | 513.37 |
| EINECS: | 208-959-9 |
| Product Categories: | |
| Mol File: | 548-80-1.mol |
| CHROMOTROPE 2B Chemical Properties |
| Melting point | 300 °C |
| Colour Index | 16575 |
| form | Crystalline Powder |
| color | Dark green to dark purple |
| Merck | 14,2240 |
| BRN | 4109733 |
| CAS DataBase Reference | 548-80-1(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt (548-80-1) |
| Safety Information |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 3 |
| TSCA | Yes |
| MSDS Information |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| CHROMOTROPE 2B Usage And Synthesis |
| Chemical Properties | dark green to dark purple crystalline powder |
| Uses | As a dye; as a reagent for boric acid or borates. |
| Uses | Chromotrope 2B is a chromotropic acid azo dye and a groundwater pollutant removed from the environment via photoelectrochemical mineralization. |
| Preparation | 4-Nitrobenzenamine diazo, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid?coupling. |
| Properties and Applications | blue-ray red. Soluble in water for yellow light red, not soluble in alcohol. The strong sulfuric acid for dark purple, diluted into yellow light red solution. In water solution to join hydrochloric acid solution to become yellow, add sodium hydroxide for blue-ray red.StandardLight FastnessSoapingPersperation FastnessOxygen bleachingFastness to seawaterFadingStainFadingStainFadingStainISO6-7444-5 |
| CHROMOTROPE 2B Preparation Products And Raw materials |
| Raw materials | N-Methyl-4-nitroaniline-->CHROMOTROPIC ACID SODIUM SALT-->1,8-Dihydroxynaphthylene-3,6-disulfonic acid-->4-Nitroaniline |
| Preparation Products | ACID VIOLET 3 |
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