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(P2404)
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English
time-weighted average exposure limit
recommended or required concentration limit for chemical exposure in a workplace in a given work day
TWAEL
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Data type
Quantity
Statements
instance of
Wikidata property related to chemistry
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Wikidata property for physical quantities
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short name
TWAEL
(English)
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subject item of this property
time-weighted average concentration
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Wikidata property example
acetone
time-weighted average exposure limit
590
milligram per cubic meter
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property proposal discussion
https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/42#P2404
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Constraints
property constraint
type constraint
class
chemical substance
chemical compound
simple substance
relation
instance of
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mandatory qualifier constraint
property
duration
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allowed qualifiers constraint
property
applies to jurisdiction
duration
route of administration
reason for deprecation
reason for preferred rank
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allowed units constraint
item of property constraint
gram per litre
millilitre per litre
milligram per cubic meter
parts per million
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range constraint
maximum value
1,000
minimum value
0
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property scope constraint
constraint status
mandatory constraint
property scope
as main value
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citation needed constraint
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