---
title: "Hydrazine (302-01-2): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/hydrazine-302-01-2/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/hydrazine-302-01-2/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/hydrazine-302-01-2/
---

Hazard search

# Hydrazine

CAS number

302-01-2

Also known as

Diamide · Diamine · Nitrogen hydride

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 0.01 ppm |  |
| 8-hour TWA | 0.013 mg/m³ |  |
| 15-minute STEL | 0.1 ppm |  |
| 15-minute STEL | 0.13 mg/m³ |  |

### Notations

-   Carc: carcinogen
-   Sk: can be absorbed through the skin

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 86** / Hydrazine by HPLC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs86.pdf) | Active (pump) | Coated glass fibre filter in cassette | IC-UV | [225-9012](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9012) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **NIOSH 3503** / Hydrazine by VIS / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/3503.pdf) | Active (pump) | Fritted midget impinger | VAS | [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 20** / Hydrazine by HPLC / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-20.pdf) | Active (pump) | Coated Firebrick tube (300mg) | HPLC-UV | [226-42-02](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-42-02) |
| **OSHA 108** / Hydrazine by LC -UV / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-108.pdf) | Active (pump) | Two treated glass fibre filters in cassette | LC-UV | [225-9012](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9012) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **Non-agency** / Hydrazine by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-185](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-185) |
| **Non-agency** / Hydrazine by Colorimetric analysis | Passive | Gastec Dosi-tube |  | [810-3D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-3d) |
| **Non-agency 22** | Active (pump) |  | CLR | [226-42-02](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-42-02) |
| **Other** | Passive |  | HPLC-UV | [500-100](https://analyt-mtc.com/catalog/product/skc-umex-100-passive-sampler-for-formaldehyde/#part-500-100) |
| **Other** | Passive |  | DR | [810-3D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-3d) |

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/)