---
title: "Butyl lactate (138-22-7): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/butyl-lactate-138-22-7/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/butyl-lactate-138-22-7/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/butyl-lactate-138-22-7/
---

Hazard search

# Butyl lactate

CAS number

138-22-7

Also known as

Butyl 2-hydroxypropanoate · n-Butyl lactate

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 5 ppm |  |
| 8-hour TWA | 30 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **OSHA PV2080** / Butyl Lactate by gas chromatography using a flame ionization detector GC-FID / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-pv2080.pdf) | Active (pump) | Sorbent Tube | GC-FID | [226-01](https://analyt-mtc.com/catalog/product/skc-anasorb-sorbent-tubes/) |

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/)