1,5-Diphenylcarbazide
1,5-Diphenylcarbazide (CAS: 140-22-7) is an organic compound with the linear formula C<sub>6</sub>H<sub>5</sub>NHNHCONHNHC<sub>6</sub>H<sub>5</sub> and a molecular weight of 242.28 g/mol. This compound is known for its chromogenic properties and is primarily utilised as a reagent in analytical chemistry for the detection and quantification of specific substances. Its suitability for testing chromate sensitivity is a key characteristic.
- IUPAC
- 1,5-Diphenylcarbohydrazide,sym.-Diphenylcarbazide
- Synonyms
- C6H5NHNHCONHNHC6H51,5-Diphenylcarbohydrazidesym.-Diphenylcarbazide
Analytical Reagent for Hexavalent Chromium Detection
1,5-Diphenylcarbazide is widely employed as a sensitive reagent for the colorimetric determination of hexavalent chromium (Cr(VI)). It forms a distinct red-violet complex in the presence of Cr(VI) under acidic conditions, enabling quantitative analysis in various matrices.
Indicator in Titrations
This compound can serve as an indicator in certain redox titrations. Its ability to undergo distinct colour changes upon oxidation or reduction makes it useful for endpoint detection in specific analytical procedures.
Research and Development
In organic synthesis and chemical research, 1,5-Diphenylcarbazide acts as a building block or intermediate. Its hydrazide structure allows for participation in various organic reactions, contributing to the development of new chemical entities.
| Molecular weight | 242.28 |
|---|---|
| Linear formula | C6H5NHNHCONHNHC6H5 |
| Solubility | aqueous acetone: passes test |
| Suitability | passes test for sensitivity to chromate |
| Melting point | 170-175 °C(lit.)173-176 °C |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
| Ignition residue | ≤0.05% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 1,5-Diphenylcarbazide used for?
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1,5-Diphenylcarbazide (CAS: 140-22-7) is primarily used as an analytical reagent for the detection and quantification of hexavalent chromium. It also finds application as an indicator in specific titrations and as a building block in chemical synthesis.
What is the CAS number and formula for 1,5-Diphenylcarbazide?
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The CAS number for 1,5-Diphenylcarbazide is 140-22-7, and its linear formula is C<sub>6</sub>H<sub>5</sub>NHNHCONHNHC<sub>6</sub>H<sub>5</sub>.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,5-Diphenylcarbazide at a purity suitable for general laboratory and analytical use. Please refer to the specific product certificate of analysis for detailed specifications. TSS does not represent this product as USP, BP, EP, or pharmaceutical grade.
What are the safety and handling considerations for 1,5-Diphenylcarbazide?
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1,5-Diphenylcarbazide is classified as a warning substance, causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It is advised to wear appropriate personal protective equipment, including a dust mask (NIOSH N95), eyeshields, and gloves, and to handle it in a well-ventilated area. Avoid breathing dust and contact with skin and eyes.
How is 1,5-Diphenylcarbazide packed, shipped, and exported?
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1,5-Diphenylcarbazide is carefully packed in compliance with international shipping regulations. Tech Serve Solutions has extensive experience in exporting fine chemicals globally to research institutions, laboratories, and industrial clients.
How can I request a sample or a quote for 1,5-Diphenylcarbazide?
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To request a sample or a detailed quote for 1,5-Diphenylcarbazide, please contact our sales department via the website or direct inquiry, providing your specific requirements.
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