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Phenolphthalein

Term · Oil and gas · MLC-T-OAG-002775

An organic compound used as an indicator in drilling fluid titrations to determine alkalinity. It is colorless in acidic solutions and turns pink or fuchsia in alkaline solutions, typically above a pH of 8.2. This color change indicates the endpoint for certain alkalinity measurements, such as phenolphthalein alkalinity (P_f).

Table 1. Record
IdentifierMLC-T-OAG-002775
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-002775",
  "term": "Phenolphthalein",
  "field": "Oil and gas",
  "definition": "An organic compound used as an indicator in drilling fluid titrations to determine alkalinity. It is colorless in acidic solutions and turns pink or fuchsia in alkaline solutions, typically above a pH of 8.2. This color change indicates the endpoint for certain alkalinity measurements, such as phenolphthalein alkalinity (P_f).",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/phenolphthalein/"
}

Record 2,956 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.