---
title: "1,2,4-Trichlorobenzene (120-82-1): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/1-2-4-trichlorobenzene-120-82-1/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/1-2-4-trichlorobenzene-120-82-1/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/1-2-4-trichlorobenzene-120-82-1/
---

Hazard search

# 1,2,4-Trichlorobenzene

CAS number

120-82-1

Also known as

1,2,4-Trichlorobenzene (polychlorobenzenes)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 1 ppm |  |
| 15-minute STEL | 5 ppm |  |

### Notations

-   Sk: can be absorbed through the skin

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 80** | Active (pump) |  | GC-ECD | [225-17-03](https://analyt-mtc.com/catalog/product/ptfe-polytetrafluoroethylene-filters/#part-225-17-03) / [226-30-04](https://analyt-mtc.com/catalog/product/skc-xad-sorbent-tubes/#part-226-30-04) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **NIOSH 5517** / Polychlorobenzenes by GC-ECD / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/5517.pdf) | Active (pump) | 13mm, 5µm PTFE filter in stainless steel holder with XAD-2 tube (100/50mg) | GC-ECD | [226-30-04](https://analyt-mtc.com/catalog/product/skc-xad-sorbent-tubes/#part-226-30-04) |
| **ASTM D 5466** |  |  | GC-MS |  |
| **Non-agency** / 1,2,4-Trichlorobenzene by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-131La](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-131la) |
| **Non-agency** / VOCs by solvent desorption and GC-FID / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/VOC_Chek_575_Series-Selection_Guide.pdf) | Passive | Passive sampler |  | [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) |
| **Other** | Passive |  | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) |

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/)