ASTM D5222 - High Fire-Point Mineral Electrical Insulating Oils

We perform testing by Specification ASTM D5222, which covers a high fire-point mineral oil based insulating fluid used as a dielectric and cooling medium. High fire-point insulating oil, unlike conventional mineral insulating oil, has a fire-point of at least 300C. This type of insulating oil can also be referred to as ‘less flammable’ mineral insulating oil.

For additional information on this specification or to purchase a copy, please click HERE to open a new window and visit the ASTM website.

The following is a list of tests required by Specification ASTM D5222. Some of these tests are customized for this exact specification. Alcor Petrolab and Phoenix Chemical Laboratory specialize in unusual and custom testing, and our testing capabilities are continuing to expand; contact us today to discuss the exact testing you need. To see more information about one of these tests, click on the test method number. 

Physical Tests

• ASTM D1524 - Visual Examination
• ASTM D1500 - Color Analysis
• ASTM D92 - Flash & Fire Point Test
• ASTM D611 - Aniline Point Test
• ASTM D971 - Interfacial Tension Test
• ASTM D97 - Pour Point Test
• ASTM D1298 - Density (API Gravity)
• ASTM D445 - Kinematic Viscosity Test

Electrical Tests

• ASTM D1816 - Dielectric Strength Test
• ASTM D877 - Dielectric Strength Test
• ASTM D2300 - Gassing Tendency
• ASTM D924 - Dielectric Constant Test

Chemical Tests

• ASTM D1275 - Copper Corrosion Test
• ASTM D878 - Inorganic Chlorides and Sulfates
• ASTM D664 - Acid Number Test
  or ASTM D974 - Acid/Base Number
• ASTM D1533 - Karl Fischer Water Content
• ASTM D2440 - Oxidation Stability Test
• ASTM D2112 - Oxidation Stability Test
• ASTM D2668 - Oxidation Inhibitor Content
  or ASTM D4768 - Oxidation Inhibitor Content
• ASTM D4059 - PCB Content