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Sulfur Trioxide & Sulfuric Acid

Toxic Substance

    What is Sulfur Trioxide & Sulfuric Acid?

    CAS#: Sulfur Trioxide 007446-11-9, Sulfuric Acid 007664-93-9

    Sulfur trioxide (SO3) is generally a colorless liquid. It can also exist as ice- or fiber-like crystals or as a gas. When SO3 is exposed to air, it rapidly takes up water and gives off white fumes. It can react with water to form sulfuric acid.

    SO3 is also called sulfuric oxide and sulfuric anhydride. It is used in the production of sulfuric acid and other chemicals, and explosives.

    Sulfuric acid is a clear, colorless, oily liquid that is very corrosive. It is also called sulphine acid, battery acid, and hydrogen sulfate. It is used in the manufacture of fertilizers, explosives, other acids, and glue; in the purifiction of petroleum; in the pickling of metal; and in lead-acid batteries (used in most vehicles).

    Related Resources for Sulfur Trioxide & Sulfuric Acid

    • Public Health Statement
      Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.
    • ToxFAQ
      Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.
    • Toxicological Profile
      Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.
    This page was updated on 05/21/2008