JP-4
E790542
JP-4 is a wide-cut, kerosene-gasoline blend jet fuel formerly used extensively by the U.S. military, known for its high volatility and low flash point.
All labels observed (1)
| Label | Occurrences |
|---|---|
| JP-4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9297887 — 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: JP-4 Context triple: [JP-7, hasHigherFlashPointThan, JP-4]
-
A.
JP-7
JP-7 is a specialized high-flashpoint jet fuel developed for sustained use in extreme temperatures and speeds, most notably in high-altitude reconnaissance aircraft.
-
B.
Jet-A kerosene
Jet-A kerosene is a widely used aviation turbine fuel for jet and turboprop aircraft, characterized by its high energy density, controlled combustion properties, and strict performance and safety specifications.
-
C.
Aerozine 50
Aerozine 50 is a hypergolic liquid rocket propellant consisting of a 50/50 mixture of hydrazine and unsymmetrical dimethylhydrazine, valued for its storability and reliable ignition in space launch and missile systems.
-
D.
RP-1
RP-1 is a highly refined kerosene-based rocket propellant commonly used in liquid-fueled launch vehicles.
-
E.
Kerosene
"Kerosene" is a 2005 country song and breakthrough hit by Miranda Lambert, known for its fiery lyrics about revenge and empowerment.
- 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: JP-4 Target entity description: JP-4 is a wide-cut, kerosene-gasoline blend jet fuel formerly used extensively by the U.S. military, known for its high volatility and low flash point.
-
A.
JP-7
JP-7 is a specialized high-flashpoint jet fuel developed for sustained use in extreme temperatures and speeds, most notably in high-altitude reconnaissance aircraft.
-
B.
Jet-A kerosene
Jet-A kerosene is a widely used aviation turbine fuel for jet and turboprop aircraft, characterized by its high energy density, controlled combustion properties, and strict performance and safety specifications.
-
C.
Aerozine 50
Aerozine 50 is a hypergolic liquid rocket propellant consisting of a 50/50 mixture of hydrazine and unsymmetrical dimethylhydrazine, valued for its storability and reliable ignition in space launch and missile systems.
-
D.
RP-1
RP-1 is a highly refined kerosene-based rocket propellant commonly used in liquid-fueled launch vehicles.
-
E.
Kerosene
"Kerosene" is a 2005 country song and breakthrough hit by Miranda Lambert, known for its fiery lyrics about revenge and empowerment.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
aviation fuel
ⓘ
jet fuel ⓘ wide-cut fuel ⓘ |
| advantage |
good low-temperature starting characteristics
ⓘ
wide boiling range ⓘ |
| chemicalType | kerosene-gasoline blend ⓘ |
| color | water-white to straw-colored ⓘ |
| combustionProperty |
readily forms flammable vapors at ambient temperatures
ⓘ
wide flammability limits ⓘ |
| contains |
gasoline-range hydrocarbons
ⓘ
kerosene-range hydrocarbons ⓘ |
| containsAdditives |
antioxidants
ⓘ
corrosion inhibitors ⓘ fuel system icing inhibitor ⓘ metal deactivators ⓘ static dissipater additives ⓘ |
| density | lower than kerosene-based jet fuels like JP-8 ⓘ |
| disadvantage |
high flammability hazard
ⓘ
higher volatility compared to kerosene-only jet fuels ⓘ increased fire risk in crashes ⓘ |
| energyContent | lower than JP-8 per unit volume ⓘ |
| flashPoint | low ⓘ |
| flashPointApprox |
around −10 °F
ⓘ
around −23 °C ⓘ |
| freezingPointApprox | around −60 °C ⓘ |
| handlingClassification | highly flammable liquid ⓘ |
| hydrocarbonRange | approximately C4 to C16 ⓘ |
| introducedBy |
United States military
ⓘ
linked to:
United States Armed Forces
|
| introducedInDecade | 1950s ⓘ |
| largelyReplacedBy | kerosene-based JP-8 ⓘ |
| NATOCode | F-40 ⓘ |
| phaseOutReason |
environmental and health concerns
ⓘ
fire hazard in ground handling and crashes ⓘ safety concerns ⓘ |
| primaryComponents | hydrocarbons ⓘ |
| regulatoryConcern | occupational exposure to vapors ⓘ |
| replacedBy |
JP-8
ⓘ
linked to:
Jet-A kerosene
|
| replacedIn | U.S. military fuel system ⓘ |
| standardizedBy | U.S. military specification ⓘ |
| storageRequirement | explosion-proof handling procedures ⓘ |
| typicalUseStatus | obsolete in U.S. military service ⓘ |
| usedBy |
U.S. Air Force
ⓘ
linked to:
United States Air Force
U.S. Army ⓘ
linked to:
United States Army
United States military ⓘ
linked to:
United States Armed Forces
|
| usedExtensivelyDuring |
Cold War era
ⓘ
linked to:
Cold War
|
| usedFor | cold-weather operations ⓘ |
| usedIn | military jet aircraft ⓘ |
| usedInConflict | Vietnam War ⓘ |
| volatility | high ⓘ |
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: JP-4 Description of subject: JP-4 is a wide-cut, kerosene-gasoline blend jet fuel formerly used extensively by the U.S. military, known for its high volatility and low flash point.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.