Structure
Identifiers
CAS:
71-43-2IUPAC name: benzene
Formula:
C6H6MW: 78.11 g/mol
Structural identifiers
SMILES: C1=CC=CC=C1
InChIKey: UHOVQNZJYSORNB-UHFFFAOYSA-N
InChI: InChI=1S/C6H6/c1-2-4-6-5-3-1/h1-6H
Specifications
Commercial
Inventory: to order
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Request a quote →Physical & chemical properties
Computed descriptors aggregated from PubChem for CAS 71-43-2.
| XLogP | 2.1 |
|---|---|
| Complexity | 15 |
| Exact mass | 78.0469501914 g/mol |
| Formal charge | 0 |
| Heavy atom count | 6 |
| Monoisotopic mass | 78.0469501914 g/mol |
| H-bond donor count | 0 |
| Rotatable bond count | 0 |
| H-bond acceptor count | 0 |
| Topological polar surface area (TPSA) | 0 Ų |
China regulatory compliance
Hazardous Chemical (China MEM Catalogue 2015)
- 应急管理部危险化学品目录
- 生态环境部优先控制化学品名录
Sourcing & suppliers — benzene
Grounded in ChemExact's verified supplier and document records. Sourcing questions are answered with ChemExact's own network — not third-party marketplaces.
Who supplies benzene in China?
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Which suppliers provide a COA or analysis report for benzene?
A batch-specific Certificate of Analysis ships with every benzene (CAS 71-43-2) order. Request the latest COA through ChemExact — every quote includes a COA and batch traceability.
Frequently asked questions
Curated by ChemExact's editorial team and reviewed by chemistry and API procurement specialists. Each factual claim is traceable to the cross-source citation graph at the bottom of the page.
What is benzene (CAS 71-43-2)?
benzene is a chemical compound with molecular formula C6H6 and molecular weight ≈ 78.11 g/mol. Its CAS Registry Number is 71-43-2. Benzene can cause cancer according to California Labor Code. It can cause developmental toxicity and male reproductive toxicity according to an independent committee of scientific and health experts.
What chemical does CAS 71-43-2 refer to?
CAS Registry Number 71-43-2 refers to benzene, molecular formula C6H6, molecular weight ≈ 78.11 g/mol. The CAS number is verifiable on PubChem, CAS Common Chemistry and ECHA. To source benzene, submit an RFQ on this page to be matched with ChemExact's verified supplier network, with batch COAs.
What is the molecular formula and weight of benzene (CAS 71-43-2)?
The molecular formula of benzene is C6H6, and the molecular weight is 78.11 g/mol. This data has been cross-verified against PubChem, ChEMBL and CAS Common Chemistry.
What are the SMILES and InChIKey of benzene?
The canonical SMILES of benzene is `C1=CC=CC=C1`, and the InChIKey is `UHOVQNZJYSORNB-UHFFFAOYSA-N`. These international identifiers are reusable in PubChem, ChemDraw, RDKit and most cheminformatics toolchains.
What are the common synonyms of benzene?
Common synonyms of benzene include: benzene, 71-43-2, benzol, Cyclohexatriene, benzole, Pyrobenzole, Benzine, Coal naphtha — 20 synonyms in total. The full list (sourced from PubChem) is available in the page header under "Show synonyms".
What is the current price of benzene (CAS 71-43-2)?
ChemExact does not publish public price lists for benzene. No verified supplier has linked this SKU yet — submit an RFQ below and our BD team will return 3+ comparative quotes within 48–72 hours, each with batch traceability and a COA. For background market context only (non-binding), industry bulletins such as ICIS or national commodity indices may be consulted independently.
How has benzene price trended recently?
benzene pricing follows upstream feedstocks, export demand, and plant turnaround cycles. ChemExact does not quote spot indices on this page. For a procurement decision, submit an RFQ — suppliers respond with current lot pricing and lead time. Independent market bulletins (ICIS, national commodity indices) may be used only as non-binding background reference.
Who are the major manufacturers of benzene in China?
China-based manufacturers of benzene (CAS 71-43-2) are matched on demand by the ChemExact business team. Submit an RFQ or contact bd@chemexact.com — a BD advisor will shortlist candidates from regulated directories (e.g. China MEM hazardous-chemicals registration at https://whpdj.mem.gov.cn/) with full provenance on each dossier. Because benzene is listed under China's hazardous-chemicals regime, only licensed entities may produce or trade it. Supplier discovery is handled through ChemExact's verified network, not third-party marketplaces.
Which suppliers in East / North / South China stock benzene?
Regional supply of benzene (CAS 71-43-2) is matched on demand through ChemExact's own verified network. Submit an RFQ stating your target region (East / North / South China), or reach the ChemExact business team at bd@chemexact.com — a BD advisor will match verified producers from regulated enterprise registries and return comparable quotes with COAs. When ChemExact's geo-browse directory is enabled, city-level supplier pages list credentials and last review dates. Cross-province shipment of benzene requires compliant hazmat carriers where applicable.
Who are the largest global producers of benzene?
International supply of benzene (CAS 71-43-2) is arranged by the ChemExact business team based on export credentials. Submit an RFQ or contact bd@chemexact.com — a BD advisor will match qualified exporters and return batch COAs, trade terms, and Incoterms. For regulatory due diligence, consult ECHA REACH (CAS 71-43-2), US EPA CompTox, or Japan NITE — these are compliance references, not procurement marketplaces.
What grades of benzene are commercially available?
benzene is typically supplied in the following grades: Industrial / Technical (≥ 99%, bulk feedstock), Reagent (AR/CP/GR, ≥ 99.5%, lab analytics), HPLC / GC (≥ 99.9%, chromatography & spectroscopy). Grade-specific specs are confirmed via the supplier's SDS and CoA. ChemExact lets verified suppliers attach hash-validated CoA/SDS files on their brand product pages.
Where can I download the SDS / MSDS for benzene (CAS 71-43-2)?
Authoritative SDS sources: ① PubChem 'Safety and Hazards' section — https://pubchem.ncbi.nlm.nih.gov/compound/241; ② US NIH Hazardous Substances Data Bank (HSDB); ③ ECHA REACH dossier; ④ Supplier-attached SDS on verified ChemExact brand pages. ChemExact does not host SDS files directly (to avoid version drift); all SDS links route to source.
Related research papers
Open-access publications referencing benzene (CAS 71-43-2), sourced from OpenAlex.
A consistent and accurate<i>ab initio</i>parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu
The M06 suite of density functionals for main group thermochemistry, thermochemical kinetics, noncovalent interactions, excited states, and transition elements: two new functionals and systematic testing of four M06-class functionals and 12 other functionals
Palladium-Catalyzed Cross-Coupling Reactions of Organoboron Compounds
Analysis of nitrate, nitrite, and [15N]nitrate in biological fluids
A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010
Occurrence of the potent mutagens 2- nitrobenzanthrone and 3-nitrobenzanthrone in fine airborne particles
Authoritative external references
Every chemistry property, compliance flag and literature claim on this page is traceable to the authoritative external sources below. Click any link to verify on the publishing institution's original page.
- NIST WebBook · Benzene ↗ — NIST · Standard Reference Data Program
- OpenAlex papers ↗ — OurResearch · OpenAlex
- ChEMBL · CHEMBL277500 ↗ — EMBL-EBI · ChEMBL
- China compliance (IECSC) ↗ — MEE · China IECSC
- PubChem PUG-View · CID 241 ↗ — National Library of Medicine · PubChem
- PubChem · CID 241 ↗ — National Library of Medicine · PubChem
Content & data statement.
Commercial information on this page (CAS, HS, EC, purity grade, indicative price band, lead time, inventory status,
REACH and FDA flags) is captured from supplier-controlled documents by the ChemExact editorial desk and reviewed
on a recurring cycle. Chemistry data — structures, synonyms, physico-chemical properties, hazard classifications and
the cited literature — is reconciled against internationally recognised authorities (including but not limited to
PubChem, CAS Common Chemistry, ECHA, China MEM, ChEMBL and OpenAlex) and cross-checked by our editors.
Disclaimer: This page is intended as a procurement-side technical reference and does not constitute legal, regulatory, or medical advice. Lot-level conformity is determined by the supplier-signed CoA and SDS. Transport, storage and handling must follow the applicable jurisdictional regulations and product SDS. If you spot a discrepancy with an authoritative source, please contact our editorial team — we review correction requests within five business days.
Disclaimer: This page is intended as a procurement-side technical reference and does not constitute legal, regulatory, or medical advice. Lot-level conformity is determined by the supplier-signed CoA and SDS. Transport, storage and handling must follow the applicable jurisdictional regulations and product SDS. If you spot a discrepancy with an authoritative source, please contact our editorial team — we review correction requests within five business days.
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