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 |  | 2,5-DICHLORO-4-NITROANILINE Basic information |  
 | Product Name: | 2,5-DICHLORO-4-NITROANILINE |  | Synonyms: | 2,5-dichloro-4-nitro-anilin;2,5-dichloro-4-nitro-benzenamin;Benzenamine,2,5-dichloro-4-nitro-;2,5-DICHLORO-4-NITROANILINE;2,5-Dichloro-4-nitrobenzenamine;TIMTEC-BB SBB003478;2,5-Dichloro-4-nitroaniline,97%;2,5-DICHLO-4-NITROANILINE |  | CAS: | 6627-34-5 |  | MF: | C6H4Cl2N2O2 |  | MW: | 207.01 |  | EINECS: | 229-591-5 |  | Product Categories: | Intermediates of Dyes and Pigments;Amines;C2  to  C6;Nitrogen  Compounds;Building Blocks;C6;Chemical Synthesis;Nitrogen Compounds;Organic Building Blocks |  | Mol File: | 6627-34-5.mol |    |  
  
 |  | 2,5-DICHLORO-4-NITROANILINE Chemical Properties |  
 | Melting point  | 154-158 °C (lit.) |  | Boiling point  | 360.98°C (rough estimate) |  | density  | 1.6257 (rough estimate) |  | refractive index  | 1.6100 (estimate) |  | storage temp.  | Keep in dark place,Inert atmosphere,Room temperature |  | pka | pK1:-1.74(+1) (25°C) |  | form  | powder to crystal |  | color  | Light yellow to Amber to Dark green |  | BRN  | 2211952 |  | CAS DataBase Reference | 6627-34-5(CAS DataBase Reference) |  | EPA Substance Registry System | 2,5-Dichloro-4-nitroaniline (6627-34-5) |  
  
| Hazard Codes  | Xi |  | Risk Statements  | 36/37/38 |  | Safety Statements  | 26-36-37/39 |  | RIDADR  | 2811 |  | WGK Germany  | 3 |  | RTECS  | BX2950000 |  | HS Code  | 29214200 |  
  
 |  | 2,5-DICHLORO-4-NITROANILINE Usage And Synthesis |  
 | Chemical Properties | yellow powder |  | Uses | 2,5-Dichloro-4-nitroaniline may be employed as an indicator for the estimation of acidity of strong acids. |  | General Description | 2,5-Dichloro-4-nitroaniline is primary aniline indicator. Its pKa in sulfonate and water are -2.12 and -1.78, respectively. |  | Purification Methods | Recrystallise it from EtOH, then sublime it in vacuo.[Beilstein 12 H 735, 12 II 400.] |  
  
 |  | 2,5-DICHLORO-4-NITROANILINE Preparation Products And Raw materials |  
 | Raw materials | 1,4-Benzenediamine, 2,5-dinitro--->N-(2,5-dichloro-4-nitrophenyl)acetamide-->2',5'-DICHLOROACETANILIDE-->1,4-Dichloro-2,5-dinitrobenzene-->Ammonia-->1,4-Dichlorobenzene |  | Preparation Products | 1-IODO-2,4,5-TRICHLOROBENZENE-->AMACEL ORANGE 4R |  
  
 
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