906 Oil Spill Cleanup

Methanol (Methyl Alcohol)

What is Methanol?

Methanol is a flammable, colorless liquid with a mild, slightly sweet or alcoholic odor. It is added as a hydrate inhibitor in pipelines or used in spill response in cold regions. A worker handling a leaking container can get it on their hands and breathes in vapors. Common uses include:

• As a hydrate inhibitor to prevent ice or gas hydrates in pipelines.
• As an antifreeze additive in offshore drilling fluids and equipment.
• As a solvent in refining and cleaning operations.
• In emergency response, methanol may be used during oil spill cleanup in chemical applications.

Methanol is easy to confuse with water or ethanol-based products, making proper labeling and handling especially important.

Health Risks

Methanol can enter the body through inhalation, skin contact, or accidental ingestion—especially when working in enclosed spaces, during spills, or while mixing or transferring chemicals.

• Short-term (acute) exposure can cause:
  • Headache, dizziness, and nausea.
  • Eye and respiratory tract irritation.
  • Fatigue, lack of coordination, or confusion.
• Severe exposure may result in:
  • Damage to the optic nerve, which can cause partial or permanent blindness.
  • Coma, seizures, or even death in high concentrations or through ingestion.
• Long-term (chronic) exposure may cause:
  • Neurological damage, including tremors or memory loss.
  • Worsening vision problems.

Because methanol is absorbed through the skin, personal protective equipment (PPE) such as gloves and chemical-resistant clothing should always be worn when handling methanol or methanol-containing products.

Occupational Exposure Limits

• NIOSH Recommended Exposure Limit (REL): TWA 200 ppm (260 mg/m³); STEL 250 ppm (325 mg/m³); skin notation (indicates absorption through skin).
• OSHA Permissible Exposure Limit (PEL): TWA 200 ppm (260 mg/m³).

Use ventilation systems, gas monitors, and PPE to reduce the risk of overexposure. Always follow site-specific safety protocols and report symptoms of methanol exposure immediately.

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