---
title: "Chlorine dioxide (10049-04-4): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/chlorine-dioxide-10049-04-4/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/chlorine-dioxide-10049-04-4/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/chlorine-dioxide-10049-04-4/
---

Hazard search

# Chlorine dioxide

CAS number

10049-04-4

Also known as

Chlorine oxide · Chlorine peroxide

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 0.1 ppm |  |
| 8-hour TWA | 0.28 mg/m³ |  |
| 15-minute STEL | 0.3 ppm |  |
| 15-minute STEL | 0.84 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **OSHA ID 202** | Active (pump) |  | IC-CD | [225-36-2](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-2) / [225-22](https://analyt-mtc.com/catalog/product/biosampler/#part-225-22) |
| **OSHA ID-126SGX** / Chlorine & Chlorine dioxide by Titration / [Method document (opens in a new tab)](http://www.osha.gov/dts/sltc/methods/inorganic/t-id126sgx-pv-01-0112-m/t-id126sgx-pv-01-0112-m.html) | Active (pump) | Impinger with glass fibre prefilter |  | [225-36-2](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-2) / [225-22](https://analyt-mtc.com/catalog/product/biosampler/#part-225-22) / 225-2708 / [225-2901](https://analyt-mtc.com/catalog/product/filter-supports/#part-225-2901) / [225-3-23](https://analyt-mtc.com/catalog/product/sureseal-cassette-blanks/#part-225-3-23) |
| **OSHA ID-202** / Determination of Chlorine Dioxide in Workplace Atmospheres by IC -CD / [Method document (opens in a new tab)](https://www.osha.gov/dts/sltc/methods/inorganic/id202/id202.html) | Active (pump) | Impinger | IC-ECN | [225-36-1](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-1) / [225-22](https://analyt-mtc.com/catalog/product/biosampler/#part-225-22) / [225-36-2](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-2) / [225-36-5](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-5) |
| **OSHA ID-210** / Chlorine Dioxide by IC -CD / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-id210.pdf) | Active (pump) | Impinger |  | [225-36-2](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-2) / [225-36-5](https://analyt-mtc.com/catalog/product/skc-impingers/#part-225-36-5) / [225-22](https://analyt-mtc.com/catalog/product/biosampler/#part-225-22) |
| **Non-agency** / Chlorine dioxide by Colorimetric analysis | Direct-reading | Gastec Detector tube |  | [810-23M](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-23m) / [810-23L](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-23l) / [810-8H](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-8h) / [810-8La](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-8la) |

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/)