---
title: "Isophorone (78-59-1): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/isophorone-78-59-1/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/isophorone-78-59-1/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/isophorone-78-59-1/
---

Hazard search

# Isophorone

CAS number

78-59-1

Also known as

1,1,3-Trimethyl-3-cyclohexene-5-one · 3,5,5-Trimethylcyclohex-2-enone · 3,5,5-Trimethylcyclohex-2-enone (isophorone) · Isoacetophorone · Isophorone (3,5,5-trimethylcyclohex-2-enone) · Isophorone (see online Passive Sampling Guide)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 15-minute STEL | 5 ppm |  |
| 15-minute STEL | 29 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)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs72.pdf) | Active (pump) | Thermal desorption tube | TD, GC | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) |
| **MDHS 80** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs80.pdf) | Passive | Tenax thermal desorption tube with diffusive end caps |  | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) |
| **MDHS 88** / VOCs by solvent desorption and GC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs88.pdf) | Passive | Passive sampler | 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/) |
| **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 TD tube (250mg) |  | [226-357](https://analyt-mtc.com/catalog/product/skc-tenax-sorbent-tubes/#part-226-357) |
| **NIOSH 2508** / Isophorone by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/2508.pdf) | Active (pump) | Anasorb 747 tube (140/70mg) | GC-FID | [226-81A](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/#part-226-81a) |
| **NIOSH 2556** / Isophorone by GC-FID / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/2556.pdf) | Active (pump) | XAD-4 tube (80/40mg) | GC-FID | [226-93](https://analyt-mtc.com/catalog/product/skc-xad-sorbent-tubes/#part-226-93) |
| **EPA TO-17** | Active (pump) |  | 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) |
| **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** / Isophorone by Colorimetric analysis | Direct-reading | Gastec detector tube |  | [810-154](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-154) |
| **Non-agency** / VOCs by thermal desorption and GC / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/ULTRA_Selection_Guide_April_2017.pdf) | Passive | Anasorb GCB1 (370mg) or Tenax TA (265mg) passive sampler |  | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-104](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-104) |
| **Other** | Passive |  | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |
| **Other** | Passive |  | TD, GC | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-104](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-104) |
| **Other Internal** | Passive |  | TD, GC | [690-101](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-101) / [690-104](https://analyt-mtc.com/catalog/product/skc-ultra-passive-samplers/#part-690-104) |

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/)