| http://www.w3.org/ns/prov#value | - d for cleaning hard surfaces, including household cleansers for windows, sinks, counters, ovens, tubs, or other food preparation surfaces and plumbing fixtures; (9) used as a water softening chemical, antiscale chemical, or corrosion inhibitor intended for use in closed systems such as boilers, air conditioners, cooling towers, or hot water heating systems. (D) The Department of Health and Environ
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