---
title: "Silica amorphous (7699-41-4): exposure limits and sampling"
url: https://analyt-mtc.com/tools/hazard-search/silica-amorphous-7699-41-4/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/silica-amorphous-7699-41-4/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/silica-amorphous-7699-41-4/
---

Hazard search

# Silica amorphous

CAS number

7699-41-4

Also known as

Silica amorphous (inhalable dust) · Silica amorphous (respirable dust) · Silica, amorphous (respirable)

## UK workplace exposure limits

Our data hold no UK limit for this substance.

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 14/4** | Active (pump) |  | GR | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-5-25](https://analyt-mtc.com/catalog/product/button-sampler/#part-225-5-25) / [225-69](https://analyt-mtc.com/catalog/product/plastic-cyclone/#part-225-69) / [225-772](https://analyt-mtc.com/catalog/product/iom-sampler/#part-225-772) |
| **NIOSH 7501** | Active (pump) |  | XRD | [225-8208A](https://analyt-mtc.com/catalog/product/gla-5000-pvc-membrane-filters/#part-225-8208) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) / [225-01-02](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-01-02) / [225-3851-PW](https://analyt-mtc.com/catalog/product/disposable-parallel-particle-impactors/#part-225-3851-pw) |

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 Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)](https://international.skcinc.com/sampling-guides/)