Skip to main content

Benzidine

ADVERTISEMENT
Identification
Molecular formula
C12H12N2
CAS number
92-87-5
IUPAC name
benzidine
State
State

At room temperature, benzidine is a solid. It is stable under normal conditions but is sensitive to light and air, which can lead it to transform in both structure and appearance.

Melting point (Celsius)
128.00
Melting point (Kelvin)
401.00
Boiling point (Celsius)
401.00
Boiling point (Kelvin)
674.00
General information
Molecular weight
184.23g/mol
Molar mass
184.2280g/mol
Density
1.2500g/cm3
Appearence

Benzidine appears as a crystalline solid that can range in color from grayish-yellow to white. Over time or with exposure to air, it may darken. It is often found in the form of flakes, granules, or a powder. Benzidine is known to exhibit a sheen and it may have a slight odor.

Comment on solubility

Solubility of Benzidine

Benzidine, with the chemical formula C12H12N2, is a fascinating organic compound that exhibits unique solubility properties. It is primarily known for its use in dye production and as an intermediate in various chemical industries.

When discussing the solubility of benzidine, several key factors come into play:

  • Solvent Type: Benzidine is sparingly soluble in water but shows a greater affinity for organic solvents. This means that it dissolves more readily in solvents like benzene, ethanol, and acetone.
  • Temperature Influence: Like many organic compounds, the solubility of benzidine tends to increase with temperature, allowing for more effective dissolution in hot solvents.
  • Polarity Consideration: Due to its non-polar character, the solubility behavior aligns with the principle of "like dissolves like," indicating its preference for non-polar solvents.

In summary, understanding the solubility characteristics of benzidine not only aids in its practical applications but also highlights its chemical behavior in various environments. It's essential to consider these factors carefully when handling this compound in relevant chemical processes.

Interesting facts

Interesting Facts about Benzidine

Benzidine, a well-known organic compound, has a significant history and multiple applications in the field of chemistry and beyond. Here are some intriguing points to consider:

  • Structure: Benzidine is categorized as a diamine due to having two amino groups attached to a biphenyl structure. Its unique structure lends itself to various chemical reactions and transformations.
  • Industrial Use: Primarily, benzidine has been used in the production of azo dyes. These dyes are known for their vibrant colors and are widely utilized in textiles, inks, and plastics.
  • Health Concerns: Historically, benzidine has raised significant health concerns. It is classified as a potential human carcinogen, primarily due to its association with bladder cancer. As a result, its usage has been heavily regulated in many countries.
  • Scientific Research: Benzidine has played a crucial role in biochemical research, particularly in studies related to cellular processes and cancer biology. Its properties allow scientists to explore various molecular interactions and mechanisms.
  • Environmental Impact: The production and disposal of benzidine require careful management due to its potential toxic effects on the environment. Researchers continue to seek safer alternatives in industrial applications to minimize its footprint.

As a compound, benzidine demonstrates the intricate balance between utility and safety in chemical substances. Whether one examines its historical significance or current implications for health and the environment, benzidine remains a pivotal topic in the study of organic chemistry.

Synonyms
BENZIDINE
92-87-5
4,4'-Diaminobiphenyl
[1,1'-Biphenyl]-4,4'-diamine
p-Diaminodiphenyl
4-(4-aminophenyl)aniline
4,4'-Bianiline
biphenyl-4,4'-diamine
4,4'-Biphenyldiamine
4,4'-Diaminodiphenyl
p,p-Bianiline
p,p'-Diaminobiphenyl
4,4'-Biphenylenediamine
4,4'-Diphenylenediamine
Fast Corinth Base B
p,p'-Dianiline
Benzidin
Benzidina
Benzydyna
p,p'-Bianiline
Benzioine
Benzidine base
C.I. Azoic Diazo Component 112
p-Benzidine
(1,1'-Biphenyl)-4,4'-diamine
RCRA waste number U021
4,4'-Diamino-1,1'-biphenyl
Benzidin [Czech]
Benzydyna [Polish]
Benzidina [Italian]
1,1'-Biphenyl-4,4'-Diamine
Biphenyl, 4,4'-diamino-
NCI-C03361
CCRIS 71
HSDB 948
CI Azoic diazo component 112
NSC 146476
Biphenyl,4,4'-diamino-
C.I. 37225
EINECS 202-199-1
UN1885
UNII-2X02101HVF
Benzidine, 95%
BRN 0742770
p,p'-diaminodiphenyl
CI 37225
DTXSID2020137
CHEBI:80495
AI3-00140
2X02101HVF
BENZIDINE [MI]
BENZIDINE [HSDB]
BENZIDINE [IARC]
MFCD00039765
4, 4'-Biphenylenediamine
NSC-146476
biphenyl -4,4'-ylenediamine
DTXCID80137
BIPHENYL,4,4'-DIAMINO
4-13-00-00364 (Beilstein Handbook Reference)
NSC146476
UN 1885
{[1,} 1'-Biphenyl]-4,4'-diamine
BENZIDIN (CZECH)
BENZIDINE (IARC)
BENZIDINE, DYES METABOLIZED TO [IARC]
BENZYDYNA (POLISH)
BENZIDINA (ITALIAN)
PHENYLBUTAZONE IMPURITY E [EP IMPURITY]
4'-amino(1,1'-biphenyl)-4-ylamine
4'-Amino[1,1'-biphenyl]-4-ylamine
((1,) 1'-Biphenyl)-4,4'-diamine
CAS-92-87-5
BENZIDINE, DYES METABOLIZED TO (IARC)
PHENYLBUTAZONE IMPURITY E (EP IMPURITY)
RCRA waste no. U021
pBenzidine
pDiaminodiphenyl
p,pBianiline
p,p'Dianiline
p,p'Diaminobiphenyl
4,4'Bianiline
4,4'-Benzidine
4,4'diaminobiphenyl
4,4'Biphenyldiamine
4,4'Diaminodiphenyl
4,4'-Diamonophenyl
[1,4'-diamine
Biphenyl,4'-diamino-
4,4'Biphenylenediamine
4,4'Diphenylenediamine
4.4'- diaminobiphenyl
Biphenyl, 4,4'diamino
WLN: ZR DR DZ
Benzidine (ACGIH:OSHA)
4,4'Diamino1,1'biphenyl
Biphenyl-4,4'-ylenediamine
Oprea1_312205
SCHEMBL29021
YSWG265
1,1'Biphenyl)4,4'diamine
MLS002303016
Benzidine, analytical standard
BIDD:GT0832
CHEMBL15901
IFLab1_004231
Benzidine, >=98.0% (N)
HMS3091M16
Benzidine [UN1885] [Poison]
[4-(4-aminophenyl)-phenyl]-amine
Tox21_202359
Tox21_300405
BBL013163
MSK1202-100M
STK317796
AKOS000118878
AKOS016402822
CCG-202856
FB18197
4,4a(2)-Diamino-1,1a(2)-biphenyl
IDI1_009986
NCGC00091340-01
NCGC00091340-02
NCGC00091340-03
NCGC00254474-01
NCGC00259908-01
4'-Amino[1,1'-biphenyl]-4-ylamine #
AS-17227
SMR000033596
Benzidine Solution in Methanol, 100ug/mL
(1,1'-Biphenyl)-4,4'-diamine (9CI)
Benzidine, purum p.a., >=98.0% (N)
DB-057341
Benzidine 2000 microg/mL in Dichloromethane
Benzidine, ISOPAC(R), >=98.0% (N)
NS00010863
4,4'-Benzidine 10 microg/mL in Acetonitrile
EN300-18328
4,4'-Benzidine 100 microg/mL in Acetonitrile
A844372
AC-907/25014310
Q410066
SR-01000596939
[1,1'-biphenyl]-4,4'-diamine (ACD/Name 4.0)
SR-01000596939-1
Z57901921
4'-Amino[1,1'-biphenyl]-4-ylamine (ACD/Name 4.0)
F1679-0261
Benzidine Solution, 2000 in Dichloromethane, 1 mL second source
[1,1'-Biphenyl]-4,4'-diamine;4,4'-Bianiline;4,4'-Biphenyldiamine
202-199-1
26997-10-4