---
title: "Diethyl phthalate (84-66-2): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/diethyl-phthalate-84-66-2/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/diethyl-phthalate-84-66-2/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/diethyl-phthalate-84-66-2/
---

Hazard search

# Diethyl phthalate

CAS number

84-66-2

Also known as

1,2-Benzenedicarboxylic acid diethyl ester · DEP · DEP (Diethyl phthalate) · Diethyl phthalate (DEP)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 5 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **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) | OVS-Tenax-Tube |  | [226-56](https://analyt-mtc.com/catalog/product/skc-osha-versatile-sampler-ovs-tubes/#part-226-56) |
| **OSHA 104** / DMP, DEP, DBP, DEHP & DNOP by GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-104.pdf) | Active (pump) | OVS-Tenax tube | GC-FID | [226-56](https://analyt-mtc.com/catalog/product/skc-osha-versatile-sampler-ovs-tubes/#part-226-56) |

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/)