Hazard search
Calcium hydroxide - inhalable fraction
- CAS number
- 1305-62-0
- Also known as
- Calcium dihydroxide · Calcium hydrate · Calcium hydroxide · Calcium hydroxide (calcium) · Calcium hydroxide (see Particulates Not Otherwise Regulated, total and respirable) · Calcium hydroxide - respirable fraction · Hydrated lime · Slaked lime
UK workplace exposure limits
| Limit | Value | Applies to |
|---|---|---|
| 8-hour TWA | 5 mg/m³ | Calcium hydroxide - inhalable fraction |
| 8-hour TWA | 1 mg/m³ | Calcium hydroxide - respirable fraction |
| 15-minute STEL | 4 mg/m³ | Calcium hydroxide - respirable fraction |
Sampling methods
| Method | Sampling | Medium | Analysis | Part numbers |
|---|---|---|---|---|
| MDHS 14/4 General inhalable or respirable dusts by gravimetric analysis (total inhalable) Method document (opens in a new tab) | Active (pump) | IOM sampler | 225-70A | |
| MDHS 14/4 General inhalable or respirable dusts by gravimetric analysis (respirable) Method document (opens in a new tab) | Active (pump) | IOM sampler & foam, or cyclone | 225-70A 225-772 225-69 | |
| NIOSH 7020 Calcium and compounds, as Ca by AA-F Method document (opens in a new tab) | Active (pump) | Filter Cassette | AA-F | 225-3-01 225-1 225-3100 |
| OSHA ID 121 | Active (pump) | AA or AES | 225-3-01 225-1 | |
| OSHA ID-121 Metal & metalloid particulates in Workplace Atmospheres by AA/AES Method document (opens in a new tab) | Active (pump) | 0.8µm MCE filter in cassette | 225-3-01 225-1 | |
| 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 | |
| BS ISO 15202-1: 2020 Determination of metals and metalloids in airborne particulate matter by ICP | Active (pump) | IOM with 0.8µm MCE filter and foam | 225-70A 225-1930 225-772 | |
| Other |
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)