Property talk:P2240

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median lethal dose (LD50)
the dose required to kill half the members of a tested population after a specified test duration (LC₅₀ → P2712)

Represents	median lethal dose (Q711849)
Has quality	median (Q226995)
Data type	Quantity
Template parameter	en:Template:Chembox_Hazards: "LD50" - Template:Chembox Hazards (Q14396345)
Domain	According to this template: chemical compound (Q11173) According to statements in the property: type of chemical entity (Q113145171) or chemical element (Q11344) When possible, data should only be stored as statements
Allowed values	According to this template: positive rational numbers According to statements in the property: 0 ≤ 𝓧 ≤ 1,000 When possible, data should only be stored as statements
Allowed units	milligram per kilogram (Q21091747) or gram per kilogram (Q21061369)
Example	According to this template: mercuric chloride (Q143200)=>41 mg/kg with species=rat, route of administration (P636)=dermal According to statements in the property: potassium cyanide (Q192470) → 11 milligram per kilogram mercuric chloride (Q143200) → 41 milligram per kilogram When possible, data should only be stored as statements
Source	safety data sheet (Q222067) (note: this information should be moved to a property statement; use property source website for the property (P1896))
Tracking: usage	Category:Pages using Wikidata property P2240 (Q126375386)
See also	median lethal concentration (LC50) (P2712)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value Database reports/Constraint violations/P2240 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 527 Main statement 525 99.6% of uses Qualifier 2 0.4% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Type “type of chemical entity (Q113145171), chemical element (Q11344)”: item must contain property “instance of (P31)” with classes “type of chemical entity (Q113145171), chemical element (Q11344)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#Type Q113145171, Q11344, SPARQL

Required qualifier “applies to taxon (P2352)”: this property should be used with the listed qualifier. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#mandatory qualifier, SPARQL

Required qualifier “route of administration (P636)”: this property should be used with the listed qualifier. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#mandatory qualifier, SPARQL

Units: “milligram per kilogram (Q21091747), gram per kilogram (Q21061369)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#Units

Range from “0” to “1000”: values should be in the range from “0” to “1000”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#Range

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P2240#Scope, hourly updated report, SPARQL

Citation needed: the property must have at least one reference (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#citation needed

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2240#Entity types

This property is being used by: ca:Plantilla:Infotaula compost químic, ca:Plantilla:Infotaula de fàrmac, ca:Plantilla:Amadalvarez/traduccions 2, ca:Plantilla:Infotaula de fàrmac/prova, ca:Plantilla:Infotaula fàrmac, ca:Plantilla:Infotaula fàrmac/prova eu:Txantiloi:Konposatu kimiko infotaula/probak, eu:Txantiloi:Konposatu kimiko infotaula ha:Template:Infobox chemical, ha:Samfuri:Infobox chemical incubator:Template:Wp/shi/Infobox chemical kab:Talɣa:Infobox chemical shi:Talɣa:Infobox chemical ga:Teimpléad:WD Bosca Sonraí Druga, ga:Teimpléad:WD Bosca Sonraí Comhdhúil Cheimiceach ff:Template:Infobox chemical gv:Clowan:WD Kishtey Fys Co-vunstoo Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)