---
title: "Chlorodifluoromethane (75-45-6): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/chlorodifluoromethane-75-45-6/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/chlorodifluoromethane-75-45-6/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/chlorodifluoromethane-75-45-6/
---

Hazard search

# Chlorodifluoromethane

CAS number

75-45-6

Also known as

Monochlorodifluoromethane

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 1000 ppm |  |
| 8-hour TWA | 3590 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **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 charcoal tubes in series (front 400/200mg, back 100/50mg) | GC-FID | [226-09](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) / [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **NIOSH 1018** / Chlorodifluoromethane by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1018-1.pdf) | Active (pump) | Two charcoal tubes in series (front 400/200mg, back 100/50mg) |  | [226-09](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) / [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **Non-agency** / Chlorodifluoromethane by Colorimetric analysis | Direct-reading | Gastec Pyrotec tube |  | [810-51](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-51) |

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/)