Corexit 9500A
E305565
Corexit 9500A is a chemical oil dispersant widely known for its large-scale and controversial use during the Deepwater Horizon oil spill in the Gulf of Mexico.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Corexit 9500 | 1 |
| Corexit 9500A canonical | 1 |
| Corexit EC9527A | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2861482 — 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: Corexit 9500A Context triple: [Deepwater Horizon oil spill, dispersantUsed, Corexit 9500A]
-
A.
Thiokol
Thiokol was an American aerospace and chemical company best known for manufacturing the solid rocket boosters used on NASA’s Space Shuttle.
-
B.
Chamical
Chamical is a small city in central La Rioja Province, Argentina, known historically as a regional railway and agricultural center.
-
C.
Spontex
Spontex is a household cleaning products brand, best known for its sponges and related cleaning tools, owned by Newell Brands.
-
D.
Emex
Emex is a small genus of flowering plants in the knotweed family Polygonaceae, commonly known for weedy species such as Emex spinosa (spiny emex) found in disturbed and agricultural areas.
-
E.
T-Stoff (high-test hydrogen peroxide)
T-Stoff (high-test hydrogen peroxide) was a highly concentrated, volatile oxidizer used as rocket propellant in German World War II aircraft and missiles, notably the Messerschmitt Me 163.
- 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: Corexit 9500A Target entity description: Corexit 9500A is a chemical oil dispersant widely known for its large-scale and controversial use during the Deepwater Horizon oil spill in the Gulf of Mexico.
-
A.
Thiokol
Thiokol was an American aerospace and chemical company best known for manufacturing the solid rocket boosters used on NASA’s Space Shuttle.
-
B.
Chamical
Chamical is a small city in central La Rioja Province, Argentina, known historically as a regional railway and agricultural center.
-
C.
Spontex
Spontex is a household cleaning products brand, best known for its sponges and related cleaning tools, owned by Newell Brands.
-
D.
Emex
Emex is a small genus of flowering plants in the knotweed family Polygonaceae, commonly known for weedy species such as Emex spinosa (spiny emex) found in disturbed and agricultural areas.
-
E.
T-Stoff (high-test hydrogen peroxide)
T-Stoff (high-test hydrogen peroxide) was a highly concentrated, volatile oxidizer used as rocket propellant in German World War II aircraft and missiles, notably the Messerschmitt Me 163.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
chemical oil dispersant
ⓘ
oil spill dispersant formulation ⓘ |
| appliedIn |
marine environments
ⓘ
offshore oil spill scenarios ⓘ |
| associatedWith |
environmental controversy
ⓘ
marine ecosystem impact concerns ⓘ public health concerns ⓘ |
| comparedWith | Corexit EC9527A ⓘ |
| controversyAbout |
long-term environmental effects
ⓘ
toxicity to humans ⓘ toxicity to marine life ⓘ use at deepwater injection sites ⓘ |
| developedBy | Nalco Company ⓘ |
| hasComponent |
anionic surfactant
ⓘ
glycol ether solvent ⓘ hydrocarbon solvent ⓘ nonionic surfactant ⓘ solvent ⓘ surfactant ⓘ |
| hasEffect |
increases oil bioavailability to microorganisms
ⓘ
moves oil from surface to water column ⓘ reduces visible surface oil ⓘ |
| hasForm | liquid formulation ⓘ |
| hasProperty |
disperses crude oil into smaller droplets
ⓘ
increases oil dispersion in water column ⓘ reduces surface oil slicks ⓘ |
| hasRegulatoryListing |
National Contingency Plan
ⓘ
surface form:
U.S. EPA National Contingency Plan Product Schedule
|
| hasRisk |
potential acute toxicity to aquatic organisms
ⓘ
potential chronic toxicity to aquatic organisms ⓘ potential human exposure for cleanup workers ⓘ |
| marketedAs |
Corexit 9500A
self-linksurface differs
ⓘ
surface form:
Corexit 9500
|
| monitoredBy |
National Oceanic and Atmospheric Administration
ⓘ
United States Environmental Protection Agency ⓘ
surface form:
U.S. Environmental Protection Agency
|
| regulatoryStatus | approved for use as dispersant by U.S. Environmental Protection Agency ⓘ |
| replaced |
Corexit EC9527A
ⓘ
surface form:
Corexit EC9527A in some applications
|
| subjectOf |
environmental impact assessments
ⓘ
legal and policy debates ⓘ toxicological studies ⓘ |
| timeNotableUse | 2010 ⓘ |
| usedBy |
BP
ⓘ
U.S. federal agencies ⓘ
surface form:
U.S. federal response agencies
|
| usedFor |
chemical dispersion of petroleum hydrocarbons
ⓘ
oil spill response operations ⓘ |
| usedIn |
Deepwater Horizon oil spill
ⓘ
Gulf of Mexico ⓘ |
| usedMethod |
aerial spraying
ⓘ
subsea injection at wellhead ⓘ surface application ⓘ |
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: Corexit 9500A Description of subject: Corexit 9500A is a chemical oil dispersant widely known for its large-scale and controversial use during the Deepwater Horizon oil spill in the Gulf of Mexico.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Corexit EC9527A
this entity surface form:
Corexit 9500