2,4-D
E558515
2,4-D is a widely used synthetic herbicide, historically known as one of the main components of the defoliant Agent Orange used during the Vietnam War.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Rainbow Herbicides | 2 |
| 2,4-D canonical | 1 |
| Rainbow herbicides | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5979494 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 2,4-D Context triple: [Operation Ranch Hand, chemicalComponent, 2,4-D]
-
A.
DDT
DDT is a synthetic insecticide once widely used for agricultural and disease-control purposes, now infamous for its environmental persistence, bioaccumulation, and harmful effects on wildlife and human health.
-
B.
toxaphene
Toxaphene is a highly toxic, persistent organochlorine insecticide and environmental pollutant that has been widely banned due to its long-term ecological and health impacts.
-
C.
Balemartine
Balemartine is a small coastal village located on the island of Tiree in Scotland’s Inner Hebrides.
-
D.
Sarine
The Sarine is a major river in western Switzerland that flows through the canton of Fribourg and ultimately joins the Aare.
-
E.
Auscitain
An Auscitain is a resident or native of Auch, a historic town in the Occitanie region of southwestern France.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 2,4-D Target entity description: 2,4-D is a widely used synthetic herbicide, historically known as one of the main components of the defoliant Agent Orange used during the Vietnam War.
-
A.
DDT
DDT is a synthetic insecticide once widely used for agricultural and disease-control purposes, now infamous for its environmental persistence, bioaccumulation, and harmful effects on wildlife and human health.
-
B.
toxaphene
Toxaphene is a highly toxic, persistent organochlorine insecticide and environmental pollutant that has been widely banned due to its long-term ecological and health impacts.
-
C.
Balemartine
Balemartine is a small coastal village located on the island of Tiree in Scotland’s Inner Hebrides.
-
D.
Sarine
The Sarine is a major river in western Switzerland that flows through the canton of Fribourg and ultimately joins the Aare.
-
E.
Auscitain
An Auscitain is a resident or native of Auch, a historic town in the Occitanie region of southwestern France.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
chlorophenoxy herbicide
ⓘ
herbicide ⓘ organic compound ⓘ synthetic auxin ⓘ |
| abbreviationOf | 2,4-dichlorophenoxyacetic acid ⓘ |
| belongsToChemicalClass | phenoxyacetic acids ⓘ |
| causesInPlants |
uncontrolled cell division and growth
ⓘ
vascular tissue disruption ⓘ |
| chemicalName | 2,4-dichlorophenoxyacetic acid ⓘ |
| classifiedByIARC | Group 2B possible human carcinogen ⓘ |
| commercializedIn | 1940s ⓘ |
| degradationProcess | microbial degradation in soil ⓘ |
| discoveredInDecade | 1940s ⓘ |
| exposureRoute |
dermal contact
ⓘ
ingestion ⓘ inhalation ⓘ |
| hasChloroSubstitutionPattern | 2,4-dichloro ⓘ |
| hasEnvironmentalConcern |
non-target plant injury
ⓘ
potential water contamination ⓘ |
| hasFunctionalGroup |
carboxylic acid
ⓘ
phenoxy ⓘ |
| hasMolarMass | 221.04 g/mol ⓘ |
| hasMolecularFormula | C8H6Cl2O3 ⓘ |
| hasSoilHalfLife | on the order of days to weeks ⓘ |
| hasSoilMobility | moderately mobile ⓘ |
| hasSubstituent | chlorine ⓘ |
| hasTargetSiteOfAction | auxin receptors in plants ⓘ |
| hasToxicityProfile | moderate acute toxicity to humans ⓘ |
| mechanismOfAction | synthetic auxin mimic ⓘ |
| modeOfAction | disrupts plant growth regulation ⓘ |
| regulatedBy | United States Environmental Protection Agency ⓘ |
| regulatoryStatus | widely registered herbicide worldwide ⓘ |
| relativelySpares | grasses ⓘ |
| selectiveAgainst | broadleaf weeds ⓘ |
| usedAs |
defoliant component in Agent Orange
ⓘ
selective herbicide ⓘ |
| usedDuringConflict | Vietnam War ⓘ |
| usedFormulationType |
acid formulations
ⓘ
amine salt formulations ⓘ ester formulations ⓘ |
| usedIn |
agriculture
ⓘ
cereal crop production ⓘ lawn care ⓘ turf management ⓘ |
| usedOnCrop |
corn
ⓘ
pasture grasses ⓘ rice ⓘ sorghum ⓘ wheat ⓘ |
| wasComponentOf | Agent Orange ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 2,4-D Description of subject: 2,4-D is a widely used synthetic herbicide, historically known as one of the main components of the defoliant Agent Orange used during the Vietnam War.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 2,4-D
linked to: 2,4-D
linked to: 2,4-D