---
title: "4,4'-Methylenedianiline (101-77-9): sampling methods"
url: https://analyt-mtc.com/tools/hazard-search/4-4-methylenedianiline-101-77-9/
lang: en
alternates:
  en: https://analyt-mtc.com/tools/hazard-search/4-4-methylenedianiline-101-77-9/
  de: https://analyt-mtc.com/de/tools/gefahrstoffsuche/4-4-methylenedianiline-101-77-9/
---

Hazard search

# 4,4'-Methylenedianiline

CAS number

101-77-9

Also known as

4,4'-Diaminodiphenylmethane · 4,4'-Methylenebisbenzeneamine · 4,4'-Methylenedianiline (MDA) · Diphenylmethanediamine · MDA

## UK workplace exposure limits

| Limit | Value | Applies to |
| --- | --- | --- |
| 8-hour TWA | 0.01 ppm |  |
| 8-hour TWA | 0.08 mg/m³ |  |

### Notations

-   BMGV: a biological monitoring guidance value exists
-   Carc: carcinogen
-   Sk: can be absorbed through the skin

## Sampling methods

| Method | Sampling | Medium | Analysis | Part numbers |
| --- | --- | --- | --- | --- |
| **MDHS 75** / Aromatic amines by HPLC / [Method document (opens in a new tab)](http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs75.pdf) | Active (pump) | IOM & glass fibre filter (requires coating) | HPLC | [225-70A](https://analyt-mtc.com/catalog/product/haz-dust-7204-particulate-monitor/#part-225-70a) / [225-58F](https://analyt-mtc.com/catalog/product/glass-fibre-depth-filters/#part-225-58f) / [225-9004](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9004) |
| **NIOSH 5029** / 4,4,-Methylenedianiline by HPLC -UV/ECD / [Method document (opens in a new tab)](http://www.cdc.gov/niosh/docs/2003-154/pdfs/5029.pdf) | Active (pump) | Coated glass fibre filter in cassette | HPLC-UV | [225-9004](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9004) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |
| **OSHA 57** / 4,4'-Methylenedianiline by GC-ECD / [Method document (opens in a new tab)](https://www.osha.gov/sites/default/files/methods/osha-57.pdf) | Active (pump) | Coated glass fibre filter in cassette | GC-ECD | [225-9004](https://analyt-mtc.com/catalog/product/skc-coated-treated-filters/#part-225-9004) / [225-1](https://analyt-mtc.com/catalog/product/aluminium-respirable-dust-cyclone/#part-225-1) |

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/)