---
title: "Isopentane (78-78-4): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/isopentane-78-78-4/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/isopentane-78-78-4/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/isopentane-78-78-4/
---

Hazard search

# Isopentane

CAS number

78-78-4

Also known as

2-Methyl butane (isopentane) · 2-Methylbutane · Ethyl dimethyl methane · Isoamyl hydride · Isopentane (2-methyl butane)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 600 ppm |  |
| 8-hour TWA | 1800 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 88** | Passive |  | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |
| **MDHS 96** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **NIOSH 2549** / VOCs (screening) by thermal desorption and GC -MS / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/2549.pdf) | Active (pump) | Thermal desorption tube |  | [226-330](https://analyt-mtc.com/catalog/product/skc-thermal-desorption-sorbent-tubes/#part-226-330) |
| **EPA TO-17** / Toxic Organic Compounds by thermal desorption and GC / [Method document (opens in a new tab)](http://www.epa.gov/ttn/amtic/files/ambient/airtox/to-17r.pdf) | Active (pump) | Thermal desorption tube |  | [226-300](https://analyt-mtc.com/catalog/product/skc-thermal-desorption-sorbent-tubes/#part-226-300) |
| **Non-agency** / Isopentane by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-103](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-103) |
| **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/)