Hazard search
Molybdenum (insoluble)
- CAS number
- 7439-98-7
- Also known as
- Mo · Molybdenum (Elements by Cellulosic Internal Capsule Sampler) · Molybdenum (Elements by ICP Aqua Regia Ashing) · Molybdenum (Elements by ICP HNO3 Digestion) · Molybdenum (Elements by ICP HNO3/HClO4 Ashing) · Molybdenum (Elements on Wipes) · Molybdenum (soluble) · Molybdenum compounds (insoluble) (as Mo) · Molybdenum compounds (soluble) (as Mo) · Molybdenum insolubles (as Mo) · Molybdenum insolubles (as Mo) (respirable fraction) · Molybdenum solubles (as Mo)
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 10 mg/m³ | Molybdenum (insoluble) |
| 15-minute STEL | 20 mg/m³ | Molybdenum (insoluble) |
| 8-hour TWA | 5 mg/m³ | Molybdenum (soluble) |
| 15-minute STEL | 10 mg/m³ | Molybdenum (soluble) |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 91/2 Metals & metalloids by XRF Method document (opens in a new tab) | Active (pump) | IOM or cyclone with 0.8µm MCE filter | XRF | 225-70A 225-1930 |
| NIOSH 7300 Elements by ICP (Nitric/perchloric acid ashing) Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter or 5µm PVC filter in 37mm cassette | ICP-AES | 225-3-01 225-1 |
| NIOSH 7301 Elements by ICP (Aqua regia ashing) Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter or 5µm PVC filter in 37mm cassette | ICP-AES | 225-3-01 225-1 225-803 |
| NIOSH 7303 Elements by ICP (Hot block/HCl/HNO3 Digestion) Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in 37mm cassette | ICP-AES | 225-3-01 225-1 |
| NIOSH 7306 Elements by Cellulosic Internal Capsule Sampler ICP -AES Method document (opens in a new tab) | Active (pump) | Solu-CAP MCE Filters Preloaded in Cassettes and Cassette Holder | ICP-AES | 225-8517 225-1 |
| NIOSH 9102 Elements on wipes by ICP -AES Method document (opens in a new tab) | Surface | Wipe | ICP-AES | 225-2414 225-2415 |
| OSHA 125G Metals & metalloid particulates by ICP Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter with back-up pads | 225-3-01 225-1 | |
| OSHA ID 121 | Active (pump) | AA or AES | 225-3-01 225-1 225-503 225-105 | |
| OSHA ID 125G | Active (pump) | ICP-AES | 225-3-01 225-3100 225-1 | |
| OSHA ID-121 Metal & metalloid particulates by AAS Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter with back-up pads | 225-3-01 225-1 | |
| OSHA ID-204 Workplace Substances by X-Ray Fluorescence Method document (opens in a new tab) | Active (pump) | MCE or PVC filters in cassette | ||
| BS ISO 15202-1: 2020 Determination of metals and metalloids in airborne particulate matter by IC | Active (pump) | IOM with 0.8µm MCE filter | 225-70A 225-1930 | |
| BS ISO 15202-1: 2020 Determination of metals and metalloids in airborne particulate matter by ICP | Active (pump) | IOM with 0.8µm MCE filter | 225-70A 225-1930 |
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); SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)