Benzene
Benzene (CAS 71-43-2, C6H6, MW: 78.11) is a foundational aromatic hydrocarbon, recognised for its sweet odour and distinct ring structure. It serves as a crucial building block in the chemical industry. Benzene is primarily used as a precursor in the synthesis of various organic compounds, including plastics, resins, synthetic fibres, and detergents, and also finds application as a solvent.
Chemical Synthesis Intermediate
Benzene is a fundamental feedstock for producing ethylbenzene (for styrene), cumene (for phenol and acetone), and cyclohexane (for nylon). These intermediates are vital for manufacturing a vast array of polymers and other organic chemicals.
Solvent Applications
Due to its solvency properties, benzene is utilised as a solvent in specific industrial processes and for dissolving various organic materials, although its use is restricted due to health concerns.
Laboratory Reagent
In analytical and research laboratories, benzene serves as a reagent and a high-purity solvent for specific chromatographic techniques, particularly HPLC and UHPLC, under the CHROMASOLV Plus grade.
| Molecular weight | 78.11 |
|---|---|
| Empirical formula | C6H6 |
| Assay | ≥99.9% |
| Grade | CHROMASOLV® Plusfor HPLC |
| Colour | APHA: ≤20 |
| Boiling point | 80 °C(lit.) |
| Density | 0.874 g/mL at 25 °C(lit.) |
| Melting point | 5.5 °C(lit.) |
| Refractive index | n20/D 1.501(lit.) |
| Vapour pressure | 166 mmHg (37.7 °C)74.6 mmHg (20 °C) |
| Vapour density | 2.77 (vs air) |
| Autoignition temp | 1043 °F |
| Impurities tested | ≤0.02% water (Karl Fischer) |
Hazard statements
- H225Highly flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
- H315Causes skin irritation
- H319Causes serious eye irritation
- H340May cause genetic defects
- H350May cause cancer
- H372Causes damage to organs through prolonged exposure
Precautionary statements
- P201Obtain special instructions before use
- P210Keep away from heat, sparks and open flames. No smoking
- P301IF SWALLOWED
- P305IF IN EYES
- P308IF exposed or concerned
- P331Do NOT induce vomiting
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -11 °C / 12.2 °F |
| Transport (UN / ADR) | UN 1114 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 45-46-11-36/38-48/23/24/25-65 |
| Safety statements (S) | 53-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Expl Lim | 8 % |
|---|---|
| λ | H2O reference |
| Evapn Residue | <0.0005% |
| Uv Absorption | λ: 280 nm Amax: 1.0λ: 290 nm Amax: 0.15λ: 300 nm Amax: 0.06λ: 330 nm Amax: 0.02λ: 350-400 nm Amax: 0.01 |
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 Benzene (CAS 71-43-2) primarily used for?
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Benzene (CAS 71-43-2) is primarily used as a key intermediate in the synthesis of plastics, resins, synthetic fibres, and detergents. It also functions as a solvent in specific industrial applications and as a laboratory reagent.
What are the CAS number and molecular formula for Benzene?
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The CAS number for Benzene is 71-43-2, and its molecular formula is C6H6.
What grade and purity does Tech Serve Solutions supply for Benzene?
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Tech Serve Solutions supplies Benzene in the CHROMASOLV® Plus for HPLC grade, with an assay of ≥99.9% and ≤0.02% water content. TSS does not represent this product as USP, BP, or EP grade.
How is Benzene packed and shipped by Tech Serve Solutions?
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Benzene is supplied in Amber Glass Bottles. As a hazardous material (UN 1114, Class 3, Packing Group II), it is exported in compliance with all relevant international transportation regulations.
How can I request a quote or sample for Benzene?
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To request a quote or sample for Benzene, please contact our sales department through the website or by phone, providing your specific requirements and shipping details.
What are the main safety concerns when handling Benzene?
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Benzene is highly flammable (H225) and poses serious health risks, including carcinogenicity (H350) and mutagenicity (H340), and can cause organ damage (H372). Handle with extreme caution in a well-ventilated area, wearing appropriate personal protective equipment, including safety shields, gloves, and a suitable respirator.
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