---
title: "p-Phenylenediamine (106-50-3): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/p-phenylenediamine-106-50-3/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/p-phenylenediamine-106-50-3/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/p-phenylenediamine-106-50-3/
---

Hazard search

# p-Phenylenediamine

CAS number

106-50-3

Also known as

1,4-Benzenediamine · 1,4-Diaminobenzene · p-Aminoaniline · p-Phenyldiamine · para-Aminoaniline · para-Phenylenediamine

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 0.1 mg/m³ |  |

### Notations

-   Sk: can be absorbed through the skin

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **OSHA 87** / m-, o- and p-Phenylenediamine by HPLC/UV / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-87.pdf) | Active (pump) | Coated glass fibre filters in 37mm cassette | HPLC-UV | [225-9004](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9004) / [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/)