---
title: "Hydrogen chloride (7647-01-0): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/hydrogen-chloride-7647-01-0/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/hydrogen-chloride-7647-01-0/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/hydrogen-chloride-7647-01-0/
---

Hazard search

# Hydrogen chloride

CAS number

7647-01-0

Also known as

Hydrochloric acid, anhydrous · Hydrogen chloride (gas & aerosol mists) · Hydrogen chloride (hydrochloric acid)

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 1 ppm |  |
| 8-hour TWA | 2 mg/m³ |  |
| 15-minute STEL | 5 ppm |  |
| 15-minute STEL | 8 mg/m³ |  |

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **NIOSH 7907** / Volatile Acids by IC / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/7907.pdf) | Active (pump) | Coated quartz filter and quartz prefilter | IC-CD | [225-9032](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9032) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **OSHA ID 174SG** | Active (pump) |  | IC | [226-10-03](https://analyt-mtc.com/catalog/product/skc-silica-gel-sorbent-tubes/#part-226-10-03) |
| **OSHA ID-174SG** / Hydrogen chloride by IC / [Method document (opens in a new tab)](http://www.osha.gov/dts/sltc/methods/partial/t-id174sg-pv-01-8602-m/t-id174sg-pv-01-8602-m.html) | Active (pump) | Silica gel tube (400/200mg) | IC | [226-10-03](https://analyt-mtc.com/catalog/product/skc-silica-gel-sorbent-tubes/#part-226-10-03) |
| **Non-agency** / Hydrogen chloride by Colorimetric analysis | Active (pump) | Gastec Detector tube |  | [810-14R](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-14r) / [810-14M](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-14m) / [810-14L](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-14l) / [810-80](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-80) / [810-8HH](https://analyt-mtc.com/catalog/product/gastec-colour-gas-detector-tubes/#part-gst-8hh) |
| **Non-agency** / Hydrogen chloride by Colorimetric analysis | Passive | Gastec Dosi-tube |  | [810-14D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-14d) / [810-132D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-132d) |
| **Other** | Passive |  | DR | [810-132D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-132d) |
| **Other** | Passive |  | DR | [810-14D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-14d) |
| **Other** | Passive |  | DR | [810-17D](https://analyt-mtc.com/catalog/product/gastec-passive-dosi-tubes/#part-gst-17d) |

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/)