Dichromate salt

{
  "id": "MLC-T-OAG-001060",
  "term": "Dichromate salt",
  "field": "Oil and gas",
  "definition": "A salt containing hexavalent chromium, such as sodium dichromate or potassium dichromate, that was added to water-based muds as a corrosion inhibitor and as a thermal stabilizer for lignite and lignosulfonate. It acts as an anodic inhibitor by forming a protective oxide film on steel. Hexavalent chromium is toxic, so such salts are now restricted in muds that are discharged to the environment.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/dichromate-salt/"
}