--- title: "Dichloromethane (75-09-2): exposure limits and sampling" url: https://analyt-mtc.com/tools/hazard-search/dichloromethane-75-09-2/ lang: en alternates: en: https://analyt-mtc.com/tools/hazard-search/dichloromethane-75-09-2/ de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/dichloromethane-75-09-2/ --- Hazard search # Dichloromethane CAS number 75-09-2 Also known as DCM · Dichloromethane (methylene chloride) · Dichloromethane (see methylene chloride) · Methylene chloride · methylene chloride (Dichloromethane) · Methylene chloride (see online Passive Sampling Guide) · Methylene dichloride ## UK workplace exposure limits | Limit | Value | Applies to | | --- | --- | --- | | 8-hour TWA | 100 ppm | | | 8-hour TWA | 353 mg/m³ | | | 15-minute STEL | 200 ppm | | | 15-minute STEL | 706 mg/m³ | | ### Notations - BMGV: a biological monitoring guidance value exists - 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) | Chromosorb 106 tube (300mg) | TD, GC | [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) | | **MDHS 80** | Active (pump) | | TD, GC | [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) | | **MDHS 88** / VOCs by solvent desorption and GC-FID / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs88.pdf) | Passive | Anasorb CSC (350 mg) or Anasorb® 747 (500 mg) 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)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf) | Active (pump) | Two tandem charcoal tubes (150mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) | | **MDHS 104** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://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 thermal desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Chromosorb 106 tube (300mg) | | [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) | | **NIOSH 1005** / Dichloromethane by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1005.pdf) | Active (pump) | Two charcoal tubes (150mg) in series | 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)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/2549.pdf) | Active (pump) | Thermal desorption tube | | [226-330](https://analyt-mtc.com/catalog/product/skc-thermal-desorption-sorbent-tubes/#part-226-330) | | **OSHA 80** / Methylene chloride by GC-FID / [Method document (opens in a new tab)](http://www.osha.gov/dts/sltc/methods/organic/org080/org080.html) | Active (pump) | Carbosieve S-III tube (130/65mg) | | | | **OSHA 1025** | Active (pump) | | GC-FID | [226-82](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-82) / [224-29D](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-29d) / [222-3L-1](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-222-3l-1) | | **ASTM D 5466** | | | GC-MS | | | **EPA** | Active (pump) | | GC-FID | [226-82](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-82) | | **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** / Dichloromethane by Colorimetric analysis | Direct-reading | Gastec detector tube | | [810-138](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-138) / [810-138L](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-138l) / [810-51L](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-51l) | | **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 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 with rate reducer | | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) / 690-300 | | **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 | | GC-FID | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) / 690-300 | | **Other Internal** | Passive | | GC-FID | [690-105](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-105) / 690-300 | 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/)