Union Carbide Corporation
E92887
Union Carbide Corporation is a major American chemical company best known for its role in the 1984 Bhopal disaster and for producing a wide range of industrial chemicals and polymers.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T787306 — 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: Union Carbide Corporation Context triple: [Dow Chemical Company, hasSubsidiary, Union Carbide Corporation]
-
A.
Dow Chemical Company
Dow Chemical Company is a major American multinational chemical corporation known for producing a wide range of industrial, agricultural, and consumer chemical products.
-
B.
DuPont
DuPont is a major American chemical company historically known for pioneering materials science innovations and playing a key role in U.S. industrial and wartime production.
-
C.
Thiokol
Thiokol was an American aerospace and chemical company best known for manufacturing the solid rocket boosters used on NASA’s Space Shuttle.
-
D.
National Steel Company
National Steel Company was a major early American steel producer that became part of the conglomerate later known as U.S. Steel.
-
E.
SIVA chemical factory
SIVA chemical factory was an Italian industrial plant where writer and chemist Primo Levi worked as a chemist after surviving World War II.
- 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: Union Carbide Corporation Target entity description: Union Carbide Corporation is a major American chemical company best known for its role in the 1984 Bhopal disaster and for producing a wide range of industrial chemicals and polymers.
-
A.
Dow Chemical Company
Dow Chemical Company is a major American multinational chemical corporation known for producing a wide range of industrial, agricultural, and consumer chemical products.
-
B.
DuPont
DuPont is a major American chemical company historically known for pioneering materials science innovations and playing a key role in U.S. industrial and wartime production.
-
C.
Thiokol
Thiokol was an American aerospace and chemical company best known for manufacturing the solid rocket boosters used on NASA’s Space Shuttle.
-
D.
National Steel Company
National Steel Company was a major early American steel producer that became part of the conglomerate later known as U.S. Steel.
-
E.
SIVA chemical factory
SIVA chemical factory was an Italian industrial plant where writer and chemist Primo Levi worked as a chemist after surviving World War II.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
American company
ⓘ
chemical company ⓘ corporation ⓘ |
| acquiredBy | Dow Chemical Company ⓘ |
| acquisitionYear | 2001 ⓘ |
| activity |
manufacture of industrial chemicals
ⓘ
manufacture of plastics ⓘ manufacture of polymers ⓘ research and development in chemistry ⓘ |
| brand | UCAR ⓘ |
| changedNameTo | Union Carbide Corporation ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| formerHeadquartersLocation | Danbury, Connecticut ⓘ |
| foundedAs |
Union Carbide and Carbon Corporation
ⓘ
linked to:
Union Carbide Corporation
|
| foundedIn | 1917 ⓘ |
| foundedInCentury | 20th century ⓘ |
| headquartersLocation |
Houston, Texas
ⓘ
linked to:
Houston
|
| industry |
chemicals
ⓘ
petrochemicals ⓘ polymers ⓘ |
| involvedIn |
environmental litigation
ⓘ
industrial safety controversies ⓘ |
| legalForm | corporation ⓘ |
| locationCountryOfOperations |
Brazil
ⓘ
Canada ⓘ Germany ⓘ India ⓘ United States ⓘ
linked to:
United States of America
|
| notableEvent |
1984 gas leak at Bhopal
ⓘ
linked to:
Bhopal disaster
|
| notableFor | Bhopal disaster ⓘ |
| operatedPlantIn |
Bhopal, India
ⓘ
linked to:
Bhopal
|
| parentCompany |
Dow Chemical Company
ⓘ
Dow Inc. ⓘ
linked to:
Dow Chemical Company
|
| product |
adhesives
ⓘ
ethylene glycol ⓘ ethylene oxide ⓘ industrial gases ⓘ polyethylene ⓘ polypropylene ⓘ sealants ⓘ solvents ⓘ specialty polymers ⓘ vinyl chloride monomer ⓘ |
| roleInEvent | owner of Union Carbide India Limited at time of Bhopal disaster ⓘ |
| status | subsidiary ⓘ |
| stockExchangeListing | New York Stock Exchange ⓘ |
| subsidiaryInIndia |
Union Carbide India Limited
ⓘ
linked to:
Union Carbide Corporation
|
| tickerSymbol | UK ⓘ |
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: Union Carbide Corporation Description of subject: Union Carbide Corporation is a major American chemical company best known for its role in the 1984 Bhopal disaster and for producing a wide range of industrial chemicals and polymers.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Union Carbide Corporation
linked to: Union Carbide Corporation
linked to: Union Carbide Corporation
Oak Ridge Gaseous Diffusion Plant
→
managedBy
→
Union Carbide (historical operator under contract)
ⓘ
linked to: Union Carbide Corporation
subject linked to:
Union Carbide Building (as SOM partner)
linked to: Union Carbide Corporation
subject linked to:
UK
linked to: Union Carbide Corporation
linked to: Union Carbide Corporation
linked to: Union Carbide Corporation