Krafft point
E827086
The Krafft point is the characteristic temperature above which ionic surfactants become sufficiently soluble in water to form micelles, marking a sharp change in their solution behavior.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Krafft point canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9868248 — 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: Krafft point Context triple: [Friedrich Krafft, notableConcept, Krafft point]
-
A.
Curie point (Curie temperature)
The Curie point (Curie temperature) is the critical temperature at which a ferromagnetic or ferrimagnetic material loses its permanent magnetism and becomes paramagnetic.
-
B.
Kohlrausch
Kohlrausch is a German surname most notably associated with physicist Friedrich Kohlrausch, known for his pioneering work in electrical conductivity and physical chemistry.
-
C.
Néel temperature
Néel temperature is the critical temperature below which an antiferromagnetic material transitions from a disordered to an ordered magnetic state.
-
D.
Kapitsa
Kapitsa is a Russian surname most notably associated with a family of prominent physicists, including Nobel laureate Pyotr Kapitsa and science popularizer Sergei Kapitsa.
-
E.
Gouy
Gouy is a small commune in northern France located within the administrative boundaries of the canton of Le Cateau-Cambrésis.
- 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: Krafft point Target entity description: The Krafft point is the characteristic temperature above which ionic surfactants become sufficiently soluble in water to form micelles, marking a sharp change in their solution behavior.
-
A.
Curie point (Curie temperature)
The Curie point (Curie temperature) is the critical temperature at which a ferromagnetic or ferrimagnetic material loses its permanent magnetism and becomes paramagnetic.
-
B.
Kohlrausch
Kohlrausch is a German surname most notably associated with physicist Friedrich Kohlrausch, known for his pioneering work in electrical conductivity and physical chemistry.
-
C.
Néel temperature
Néel temperature is the critical temperature below which an antiferromagnetic material transitions from a disordered to an ordered magnetic state.
-
D.
Kapitsa
Kapitsa is a Russian surname most notably associated with a family of prominent physicists, including Nobel laureate Pyotr Kapitsa and science popularizer Sergei Kapitsa.
-
E.
Gouy
Gouy is a small commune in northern France located within the administrative boundaries of the canton of Le Cateau-Cambrésis.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
colloid chemistry concept
ⓘ
physical chemistry concept ⓘ |
| alsoKnownAs | Krafft temperature NERFINISHED ⓘ |
| appliesTo | ionic surfactants ⓘ |
| associatedWith |
absence of micelles below the Krafft temperature
ⓘ
precipitation of hydrated surfactant crystals below the Krafft temperature ⓘ sudden change in surface tension behavior above the Krafft temperature ⓘ sudden increase in conductivity above the Krafft temperature ⓘ |
| category |
phase behavior parameter
ⓘ
surfactant property ⓘ |
| characterizedBy | sharp increase in surfactant solubility with temperature ⓘ |
| contrastedWith | cloud point of nonionic surfactants ⓘ |
| definedAs | temperature above which an ionic surfactant becomes sufficiently soluble to form micelles ⓘ |
| dependsOn |
counterion type
ⓘ
ionic strength of solution ⓘ presence of additives ⓘ surfactant molecular structure ⓘ |
| field |
colloid and interface science
NERFINISHED
ⓘ
surfactant science ⓘ |
| hasConsequence |
determines temperature range of micellar solutions
ⓘ
limits the lowest temperature at which an ionic surfactant is effective ⓘ |
| importantFor |
ensuring surfactant solubility at use temperature
ⓘ
selection of surfactants for low-temperature applications ⓘ |
| influencedBy |
addition of electrolytes
ⓘ
headgroup charge density ⓘ hydrophobic chain length of surfactant ⓘ mixed surfactant systems ⓘ |
| marks | onset of micelle formation for ionic surfactants ⓘ |
| measuredIn |
Kelvin
NERFINISHED
ⓘ
degrees Celsius ⓘ |
| namedAfter | Friedrich Krafft NERFINISHED ⓘ |
| observedBy |
conductivity measurements
ⓘ
light scattering techniques ⓘ solubility measurements ⓘ surface tension measurements ⓘ |
| occursWhen | solubility of surfactant equals its critical micelle concentration ⓘ |
| relatedTo |
cloud point
ⓘ
critical micelle concentration ⓘ micellization ⓘ |
| temperatureRegionAbove | surfactant is soluble and forms micelles ⓘ |
| temperatureRegionBelow | surfactant is poorly soluble and often crystalline ⓘ |
| usedIn |
design of cleaning products
ⓘ
formulation of detergents ⓘ optimization of foaming and wetting properties ⓘ pharmaceutical formulations with ionic surfactants ⓘ |
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: Krafft point Description of subject: The Krafft point is the characteristic temperature above which ionic surfactants become sufficiently soluble in water to form micelles, marking a sharp change in their solution behavior.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.