---
title: "Isobutanol (78-83-1): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/isobutanol-78-83-1/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/isobutanol-78-83-1/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/isobutanol-78-83-1/
---

Hazard search

# Isobutanol

CAS number

78-83-1

Also known as

2-Methyl-1-propanol · 2-Methylpropan-1-ol · Isobutanol (isobutyl alcohol) · Isobutyl alcohol · Isobutyl alcohol (alcohols combined) · Isobutyl alcohol (alcohols II) · Isobutyl alcohol (isobutanol) · Isobutyl alcohol (see online Passive Sampling Guide) · Isopropyl carbinol

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 50 ppm |  |
| 8-hour TWA | 154 mg/m³ |  |
| 15-minute STEL | 75 ppm |  |
| 15-minute STEL | 231 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 72** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs72.pdf) | Active (pump) | Tenax (250mg) or Chromosorb 106 (300mg) thermal desorption tube | TD, GC | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) / [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) |
| **MDHS 80** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs80.pdf) | Passive | Chromosorb 106 thermal desorption tube (350mg) with diffusive end caps |  | [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) |
| **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 | 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) |
| **MDHS 96** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://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/) |
| **MDHS 104** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Charcoal tube (100/50mg) |  | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **MDHS 104** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs104.pdf) | Active (pump) | Tenax TA (250mg) or chromosorb 106 (300mg) TD tube |  | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) / [226-358](https://analyt-mtc.com/catalog/product/skc-chromosorb-sorbent-tubes/#part-226-358) |
| **NIOSH 1401** / Alcohols by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1401.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **NIOSH 1405** / Alcohols (combined) by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/1405.pdf) | Active (pump) | Charcoal tube (100/50mg) | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |
| **OSHA 5001** / Organic Vapor Sampling Group 2 by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-5001.pdf) | Active (pump) | Set of two Anasorb 747 tubes (400mg & 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) |
| **EPA TO-17** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.epa.gov/sites/default/files/2019-11/documents/to-17r.pdf) | Active (pump) | Two Thermal Desorption tubes | TD, GC | [226-350](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-350) / [226-347](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-347) / [224-26-02](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-26-02) / [224-26-CPC](https://analyt-mtc.com/catalog/product/skc-gas-and-vapour-sampling-accessories/#part-224-26-cpc) |
| **Non-agency** / Isobutyl alcohol by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-116](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-116) |
| **Other** | Passive |  | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) |
| **Other** | Passive |  | GC-FID | [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/)