---
title: "Bromomethane (74-83-9): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/bromomethane-74-83-9/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/bromomethane-74-83-9/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/bromomethane-74-83-9/
---

Hazard search

# Bromomethane

CAS number

74-83-9

Also known as

Bromomethane (methyl bromide) · Methyl bromide · Methyl bromide (bromomethane)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 5 ppm |  |
| 8-hour TWA | 20 mg/m³ |  |
| 15-minute STEL | 15 ppm |  |
| 15-minute STEL | 59 mg/m³ |  |

### Notations

-   Sk: can be absorbed through the skin

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 88** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs88.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) |
| **NIOSH 2520** / GC-AED / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/252080.pdf) | Active (pump) | Sorbent Tube | GC-Aed | [226-82](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-82) / [226-44-02](https://analyt-mtc.com/catalog/product/skc-specific-sorbent-tubes/#part-226-44-02) |
| **OSHA PV2040** | Active (pump) |  | GC-FID | [226-83](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-83) |
| **OSHA PV2040** / Methyl bromide by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-pv2040.pdf) | Active (pump) | Anasorb 747 tube (400/200mg) | GC-FID | [226-82](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-82) / [222-3L-1](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-222-3l-1) / [224-29D](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-29d) |
| **ASTM D5466** / VOCs by GC -MS / [Method document (opens in a new tab)](http://www.astm.org/Standards/D5466.htm) | Active (pump) | Canister | GC-MS |  |
| **Non-agency** / Methyl bromide by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-136H](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-136h) / [810-136L](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-136l) / [810-136LA](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-136la) / [810-136LL](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-136ll) |
| **Other** | Passive |  | GC-FID | [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) |

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/)