A Material Safety Data Sheet (MSDS) for transformer oil includes:
Identification: Product name, manufacturer, and emergency contact information.
Composition: Details of the chemical composition, including any hazardous ingredients.
Hazard Identification: Potential health, environmental, and fire hazards associated with the oil.
First Aid Measures: Instructions for treating exposure through inhalation, skin contact, eye contact, or ingestion.
Firefighting Measures: Recommended extinguishing methods and protective equipment for fire situations.
Accidental Release Measures: Steps to take in the event of a spill, including containment and cleanup procedures.
Handling and Storage: Guidelines for safe handling and proper storage conditions.
Exposure Controls/Personal Protection: Recommended protective gear, such as gloves and respiratory protection.
Physical and Chemical Properties: Characteristics like appearance, odor, boiling point, and flash point.
Stability and Reactivity: Information on chemical stability and potential reactions.
Toxicological Information: Health effects from exposure, including acute and chronic toxicity.
Ecological Information: Impact on the environment, including persistence and degradability.
Disposal Considerations: Guidelines for proper disposal of the oil.
Regulatory Information: Compliance with relevant regulations and standards.

Different types of insulating oils include:
Mineral oil: The most common type used in transformers, known for its good insulating properties and thermal stability.
Silicone oil: Used in high-temperature environments due to its excellent thermal stability.
Natural ester (e.g., FR3): Biodegradable and environmentally friendly, offering fire-resistant properties.
Synthetic ester: Offers similar benefits to natural ester but with enhanced performance under extreme conditions.
PCB oil: Previously used for its insulating properties but now banned due to environmental and health concerns.

Insulating oil is used in electrical equipment, such as transformers and capacitors, to insulate and cool internal components. It prevents electrical discharges, dissipates heat, and protects against moisture and oxidation. This ensures the safe, efficient, and reliable operation of the equipment, extending its overall lifespan.