2,2'-dichlorobenzidine
- CAS No.
- 84-68-4
- Chemical Name:
- 2,2'-dichlorobenzidine
- Synonyms
- 2,2'-dichlorobenzidine;Gentamycin Sulfate Impurity 25;2,2'-Dichlorobiphenyl-4,4'-diamine;2,2'-Dichloro-4,4'-diaminobiphenyl;4,4’-Diamino-2,2’-dichlorobiphenyl;4,4'-Diamino-2,2'-dichlorobiphenyl;4-(4-amino-2-chlorophenyl)-3-chloroaniline;[1,1'-Biphenyl]-4,4'-diamine,2,2'-dichloro-;4-(4-azanyl-2-chloro-phenyl)-3-chloro-aniline;4-(4-amino-2-chlorophenyl)-3-chlorobenzenamine
- CBNumber:
- CB6875747
- Molecular Formula:
- C12H10Cl2N2
- Molecular Weight:
- 253.13
- MDL Number:
- MFCD00209459
- MOL File:
- 84-68-4.mol
- MSDS File:
- SDS
| Melting point | 165°C |
|---|---|
| Boiling point | 398.89°C (rough estimate) |
| Density | 1.3171 (rough estimate) |
| refractive index | 1.6400 (estimate) |
| pka | 3.58±0.10(Predicted) |
| FDA UNII | 1BZE6L344R |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| HazardClass | IRRITANT |
| HS Code | 2921599090 |
2,2'-dichlorobenzidine price
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Biosynth | FD116602 | 2,2'-Dichloro-1,1'-biphenyl-4,4'-diamine | 84-68-4 | 250mg | $215 | 2026-06-04 | Buy |
| Biosynth | FD116602 | 2,2'-Dichloro-1,1'-biphenyl-4,4'-diamine | 84-68-4 | 500mg | $350 | 2026-06-04 | Buy |
| Biosynth | FD116602 | 2,2'-Dichloro-1,1'-biphenyl-4,4'-diamine | 84-68-4 | 1000mg | $520 | 2026-06-04 | Buy |
| Biosynth | FD116602 | 2,2'-Dichloro-1,1'-biphenyl-4,4'-diamine | 84-68-4 | 2000mg | $820 | 2026-06-04 | Buy |
| Biosynth | FD116602 | 2,2'-Dichloro-1,1'-biphenyl-4,4'-diamine | 84-68-4 | 5000mg | $1200 | 2026-06-04 | Buy |
2,2'-dichlorobenzidine Chemical Properties,Uses,Production
Chemical Properties
3,3' -Dichlorobenzidine is barely discolored on exposure to air and is chemically resistant to water. Oxidizing agents, such as bromine water, potassium dichromate, and iron(III) chloride, cause the formation of a green color. With gold, the green color is still detectable at a dilution of 1 : 5000000. N-Acetyl-3,3' -dichlorobenzidine and N,N' - diacetyl-3,3' -dichlorobenzidine form when 3,3' - dichlorobenzidine is treated with acetic anhydride in dilute alcohol. The tetrazotizing behavior is similar to that of benzidine and o-tolidine.
Uses
3,3' -Dichlorobenzidine was introduced about 1932 and is now the most important diphenyl base. It is used as the starting material for pigments with yellow and red shades. These are used for coloring printing inks, paints, plastics, and rubbers. The important diarylide yellow pigments, which are incorrectly known as benzidine yellows, are formed by the combination of 3,3' - dichlorobenzidine with acetic acid arylides. 3,3' - Dichlorobenzidine is also used in the production of polyurethane rubbers.
Uses
4,4''-Diamino-2,2''-Dichlorobiphenyl is a useful reactant for the synthesis of benzidine, L-proline, and diaminofluorene derivatives which are hepatitis C virus NS5A inhibitors.
Production Methods
2,2' -Dichlorobenzidine is made from m-nitrochlorobenzene, preferably using zinc dust and sodium hydroxide solution. It is subsequently rearranged and isolated in the form of a dihydrochloride.
Production Methods
3,3' -Dichlorobenzidine is made from o-nitro-chlorobenzene by reduction with zinc dust and sodium hydroxide solution and subsequent rearrangement with dilute hydrochloric acid or sulfuric acid. It is assayed by titration with sodium nitrite solution in dilute hydrochloric acid and detected in human urine by colorimetry using chloramine. The detection limit is 0.1 mg/kg.
Solubility in water
It is almost insoluble in water but readily soluble in alcohol.
Purification Methods
Crystallise the benzidine from EtOH or H2O. [Beilstein 13 H 234, 13 I 66, 13 II 106, 13 III 477, 13 IV 384.]
2,2'-dichlorobenzidine Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Accela ChemBio Inc. | +1(858) 699-3322 | marketing@accelachem.com | United States | 6022 | 65 |
| Amadis Chemical Company Limited | 571-89925085 | sales@amadischem.com | China | 131885 | 58 |
| Aikon International Limited | 025-58859352 13913916777 | dt3@aikonchem.com | China | 15490 | 58 |
| Henan Alfachem Co.,Ltd. | 0371-55051623 18137891487 | 3983243027@qq.com | China | 9965 | 58 |
| Shenzhen Polymeri Biochemical Technology Co., Ltd. | +86-400-002-6226 | sales@rrkchem.com | China | 57336 | 58 |
| Shanghai Thunder Biological Technology Co., Ltd. | 18621609968 | 1162686636@qq.com | China | 1028 | 58 |
| Alfa Chemistry | +1-5166625404; | Info@alfa-chemistry.com | United States | 20000 | 58 |
| Accela ChemBio Inc. | +1-858-6993322 +86-18019713315 | info@accelachem.com | United States | 21189 | 58 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10452 | 58 |
