class codes of chemically active substances (C)
value list of classes of groups of chemically active substances in accordance with IEC 60721-3-1:2018, Table 4
- Terms
- 3
- Used by properties
- 1
Terms3#
Applies to locations in rural and some urban areas, with low industrial activity and moderate traffic. In winter, heating methods in concentrated urban areas may cause increased contamination. Conditions are specified in IEC 60721-3-1:2018, Table 4.
Applies to locations with normal levels of contaminants as experienced in urban areas with industrial activity scattered over the whole area, or with heavy traffic. Salt mist is present in coastal areas. Conditions are specified in IEC 60721-3-1:2018, Table 4.
Applies to locations in the immediate vicinity of industrial sources, with chemical emissions. Salt mist is present in coastal areas. Conditions are specified in IEC 60721-3-1:2018, Table 4.
Metadata#
- Source document
- IEC 60721-3-1:2018, Table 4
- Version
- 1
- Revision
- 1
- Status
- Standard
- Publisher
- IEC
- Published in
- IEC 61360-7
- Responsible committee
- IEC/SC 3D
- Change request
C00193- Dates
- Original: 2026-06-02
- Current version: 2026-06-02
- Current revision: 2026-06-02