Hazard search

Chlorine dioxide

CAS number
10049-04-4
Also known as
Chlorine oxide · Chlorine peroxide

UK workplace exposure limits

LimitValueApplies 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

MethodSamplingMedium AnalysisPart numbers
OSHA ID 202 Active (pump) IC-CD 225-36-2
225-22
OSHA ID-126SGX
Chlorine & Chlorine dioxide by Titration
Method document (opens in a new tab)
Active (pump) Impinger with glass fibre prefilter 225-36-2
225-22
225-2708
225-2901
225-3-23
OSHA ID-202
Determination of Chlorine Dioxide in Workplace Atmospheres by IC -CD
Method document (opens in a new tab)
Active (pump) Impinger IC-ECN 225-36-1
225-22
225-36-2
225-36-5
OSHA ID-210
Chlorine Dioxide by IC -CD
Method document (opens in a new tab)
Active (pump) Impinger 225-36-2
225-36-5
225-22
Non-agency
Chlorine dioxide by Colorimetric analysis
Direct-reading Gastec Detector tube 810-23M
810-23L
810-8H
810-8La

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); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)