Benzidine
Benzidine (CAS: 92-87-5; Formula: C12H12N2; MW: 184.24) is an aromatic amine used primarily as an analytical standard. Historically, it found applications in the dye industry and as a reagent in clinical diagnostics. Due to its carcinogenic properties, its use is now highly restricted and primarily confined to laboratory settings for specific analytical purposes where its unique chemical properties are required.
- IUPAC
- 4,4′-Diaminobiphenyl
- Synonyms
- 4,4′-Diaminobiphenyl4,4'-BiphenyldiamineDitolyl
Analytical Standard
Benzidine serves as a reference standard in analytical chemistry for chromatography and other quantitative or qualitative analyses. Its well-defined properties make it suitable for calibrating instruments and validating analytical methods.
Reagent in Diagnostics (Historical)
Historically, Benzidine was employed in diagnostic tests, such as for detecting blood or certain metals. Its use in these applications has largely been phased out due to safety concerns.
Dye Intermediate (Historical)
In the past, Benzidine was a key intermediate in the synthesis of various azo dyes. However, due to its significant health risks, this application is now virtually obsolete.
| Molecular weight | 184.24 |
|---|---|
| Empirical formula | C12H12N2 |
| Assay | ≥98.0% (N) |
| Grade | analytical standard |
Hazard statements
- H302Harmful if swallowed
- H350May cause cancer
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P201Obtain special instructions before use
- P273Avoid release to the environment
- P308IF exposed or concerned
- P501Dispose of contents and container per local regulations
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1885 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 45-22-50/53 |
| Safety statements (S) | 53-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... UGT1A4(54657) |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Benzidine used for?
+
Benzidine (CAS: 92-87-5) is primarily used as an analytical standard in laboratory settings. Historically, it had applications in dye synthesis and clinical diagnostics, but these are now largely discontinued due to its carcinogenic nature.
What is the CAS number and molecular formula for Benzidine?
+
The CAS number for Benzidine is 92-87-5, and its molecular formula is C12H12N2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Benzidine as an analytical standard with an assay of ≥98.0% (N). We do not represent this product as USP, BP, or EP grade.
What are the main safety concerns when handling Benzidine?
+
Benzidine is a known carcinogen (H350) and is harmful if swallowed (H302). It is also very toxic to aquatic life with long-lasting effects (H410). Strict adherence to safety protocols, including the use of appropriate personal protective equipment like respirators and gloves, and working in a well-ventilated area, is essential.
Can Benzidine be exported by Tech Serve Solutions?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Benzidine (UN 1885, Hazard Class 6.1, Packing Group II).
How can I request a quote or sample for Benzidine?
+
To request a quote or sample for Benzidine, please contact our sales team through the website or by phone. Specify the required quantity and any specific delivery requirements.
▶ Related products
(−)-Curcumol
C15H24O2
Cell Biology
(±) Clopidogrel hydrogensulfate
Cell Biology
(±)-L-Alliin
C6H11NO3S
Cell Biology
(±)-2-Amino-4-phosphonobutyric acid
C4H10NO5P
Cell Biology
(±)-2-Methylarachidonoyl-2′-fluoroethylamide
C23H38NOF
Cell Biology
(±)-3,4-Methylenedioxy-N-ethylamphetamine hydrochloride
Cell Biology
(±)-3,4-Methylenedioxyamphetamine hydrochloride
Cell Biology
(±)-3,4-Methylenedioxymethamphetamine hydrochloride
Cell Biology
▶ Explore more
3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis
3-Methyl-1,5-pentanediol
Chemical Synthesis
3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis