---
title: "Octamethylcyclotetrasiloxane (556-67-2): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/octamethylcyclotetrasiloxane-556-67-2/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/octamethylcyclotetrasiloxane-556-67-2/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/octamethylcyclotetrasiloxane-556-67-2/
---

Hazard search

# Octamethylcyclotetrasiloxane

CAS number

556-67-2

Also known as

Cyclic dimethylsiloxane tetramer · Octamethylcyclotetrasiloxane (D4) · Siloxane (D4)

## UK workplace exposure limits

Our data hold no UK limit for this substance.

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **NIOSH 2549** / VOCs (screening) by thermal desorption and GC -MS / [Method document (opens in a new tab)](https://www.cdc.gov/niosh/docs/2003-154/pdfs/2549.pdf) | Active (pump) | Anasorb GCB2/GCB1/Carbosieve S-111 thermal desorption tube |  | [226-330](https://analyt-mtc.com/catalog/product/skc-thermal-desorption-sorbent-tubes/#part-226-330) |
| **Non-agency** / VOCs by solvent desorption and GC-FID / [Method document (opens in a new tab)](https://www.skcltd.com/images/pdfs/VOC_Chek_575_Series-Selection_Guide.pdf) | Passive | Anasorb CSC (350 mg) or Anasorb® 747 (500 mg) passive sampler |  | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) / [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |
| **Other** | Passive |  | GC-FID | [575-001](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-001) |
| **Other** | Passive |  | GC-FID | [575-002](https://analyt-mtc.com/catalog/product/skc-organic-vapour-passive-samplers/#part-575-002) |

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/)