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Chemical cited in Corpus Christi water situation: What is Indulin AA-86?

City officials in Corpus Christi, Texas, are warning residents not to use tap water after a chemical may have contaminated the water supply Wednesday.

The chemical was identified Thursday as Indulin AA-86.

In a statement, Valero Refining blamed "third party operations in the area of Valero’s asphalt terminal. We do not believe this issue is being caused by Valero’s Corpus Christi refineries."

What is Indulin AA-86?

Indulin AA-86 is an asphalt emulsifying agent.

Who made it?

It is made by MeadWestvaco Corporation - Specialty Chemicals Division, in Charleston, S.C.

What does it look like?

It is a viscous, dark amber liquid.

Is it dangerous?

The material is considered hazardous by the OSHA Hazard Communication Standard (29 CFR 1910.1200)

Is it harmful to people?

It can cause:

  • Eye and skin burns
  • Severe respiratory tract irritation
  • Allergic skin reaction
  • Damage to respiratory tract, skin, eye, lens or cornea, digestive system, gastrointestinal tract

For more in-depth information on Indulin AA-86, click here (PDF)