---
title: "Paraquat dichloride (respirable dust) (1910-42-5)"
url: https://analyt-mtc.com/tools/hazard-search/paraquat-dichloride-respirable-dust-1910-42-5/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/paraquat-dichloride-respirable-dust-1910-42-5/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/paraquat-dichloride-respirable-dust-1910-42-5/
---

Hazard search

# Paraquat dichloride (respirable dust)

CAS number

1910-42-5

Also known as

Methyl viologen dichloride · N,N′-dimethyl-4,4′-bipyridinium dichloride · Paraquat · Paraquat dichloride (ISO) (respirable dust)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 0.08 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 14/4** / General inhalable or respirable dusts by gravimetric analysis (respirable) / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs14-4.pdf) | Active (pump) | IOM & foam (or cyclone) with GF filter | GR | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-772](https://analyt-mtc.com/catalog/product/iom-sampler/#part-225-772) / [225-69](https://analyt-mtc.com/catalog/product/plastic-cyclone/#part-225-69) / [225-58F](https://analyt-mtc.com/catalog/product/glass-fibre-depth-filters/#part-225-58f) |
| **NIOSH 5003** / Paraquat by HPLC/UV / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/5003.pdf) | Active (pump) | 1µm PTFE filter in cassette |  | [225-17-01](https://analyt-mtc.com/catalog/product/ptfe-polytetrafluoroethylene-filters/#part-225-17-01) / [225-2LF](https://analyt-mtc.com/catalog/product/sureseal-cassette-blanks/#part-225-2lf) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |

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/)