--- title: "Benzene (71-43-2): exposure limits and sampling — Analyt-MTC" url: https://analyt-mtc.com/tools/hazard-search/benzene-71-43-2/ lang: en alternates: en: https://analyt-mtc.com/tools/hazard-search/benzene-71-43-2/ de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/benzene-71-43-2/ --- Hazard search # Benzene CAS number 71-43-2 Also known as Benzene (by portable GC) · Benzene (Hydrocarbons, Aromatic) · Cyclohexatriene ## UK workplace exposure limits | Limit | Value | Applies to | | --- | --- | --- | | 8-hour TWA | 1 ppm | | | 8-hour TWA | 3.25 mg/m³ | | ### Notations - Carc: carcinogen - Sk: can be absorbed through the skin ## Sampling methods | Method | Sampling | Medium | Analysis | Part numbers | | --- | --- | --- | --- | --- | | **MDHS 72** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs72.pdf) | Active (pump) | Tenax (250mg) or Chromosorb 106 (300mg) thermal desorption tube | TD, GC | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) / [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) | | **MDHS 80** | Active (pump) | | GC-ECD | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) | | **MDHS 88** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs88.pdf) | Passive | Passive sampler | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) / [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) | | **MDHS 96** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **MDHS 104** / VOCs by solvent or thermal desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Charcoal tube (100/50mg) | | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **MDHS 104** / VOCs by solvent or thermal desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Chromosorb 106 TD tube (300mg) | | [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) | | **MDHS 104** / VOCs by solvent or thermal desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Tenax TD tube (250mg) | | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) | | **NIOSH 1501** / Hydrocarbons (aromatic) by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1501.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **NIOSH 2549** / VOCs (screening) by thermal desorption and GC -MS / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/2549.pdf) | Active (pump) | Anasorb GCB2/GCB1/Carbosieve S-111 thermal desorption tube | | [226-330](https://analyt-mtc.com/catalog/product/skc-thermal-desorption-sorbent-tubes/#part-226-330) | | **NIOSH 3700** / Benzene by portable GC -PID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/3700.pdf) | Active (pump) | Sample bag (Tedlar, FlexFilm or FlexFoil/FlexFoil PLUS) | P GC-PID | [232-01](https://analyt-mtc.com/catalog/product/skc-tedlar-sample-bags/#part-232-01) | | **OSHA 1005** / Benzene by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-1005.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **OSHA 1005** / Benzene by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-1005.pdf) | Passive | Passive sampler | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) | | **OSHA 5000** / Organic Vapour Sampling Group 1 by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/5000.pdf) | Active (pump) | Anasorb CSC sorbent tube | | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **ASTM D5466** / VOCs by GC -MS / [Method document (opens in a new tab)](http://www.astm.org/Standards/D5466.htm) | Active (pump) | Canister | GC-MS | | | **EPA TO-17** | Active (pump) | | TD, GC | [226-350](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-350) / [226-347](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-347) / [224-26-02](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-26-02) / [224-26-CPC](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-26-cpc) | | **EPA TO-17** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.epa.gov/sites/default/files/2019-11/documents/to-17r.pdf) | Active (pump) | Two Thermal Desorption tubes | | | | **EPA TO-17** / Toxic Organic Compounds by thermal desorption and GC / [Method document (opens in a new tab)](http://www.epa.gov/ttn/amtic/files/ambient/airtox/to-17r.pdf) | Passive | Passive sampler | | | | **Non-agency** / Benzene by Colorimetric analysis | Direct-reading | Gastec Detector Tube | | [810-121](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-121) / [810-171](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-171) | | **Non-agency** / VOCs by solvent extraction and GC / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/ULTRA_Selection_Guide_April_2017.pdf) | Passive | Anasorb CSC (500mg) passive sampler | | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) | | **Non-agency** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/ULTRA_Selection_Guide_April_2017.pdf) | Passive | Anasorb GBC1 (370mg) or Chromosorb 106 (285 mg) passive sampler | | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-103](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-103) | | **Non-agency** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/ULTRA_Selection_Guide_April_2017.pdf) | Passive | Anasorb GBC1 (370mg) or Chromosorb 106 (285 mg) passive sampler with rate reducer | | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-103](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-103) / 690-300 | | **Non-agency** / Benzene by Colorimetric analysis | Passive | Gastec Dosi-Tube | | [810-122DL](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-122dl) | | **Other** | Passive | | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) | | **Other** | Passive | | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) | | **Other** | Passive | | TD, GC | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-103](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-103) / 690-300 | | **Other** | Passive | | GC-FID | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) | | **Other** | Passive | | DR | [810-122DL](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-122dl) | | **Other Internal** | Passive | | TD, GC | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-103](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-103) / 690-300 | | **Other Internal** | Passive | | GC-FID | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) | Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling. Source: [SKC Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab)](https://www.skcltd.com/hazard-search.html); [SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)](https://international.skcinc.com/sampling-guides/)