Unusual Handling Hazards: Toxic quantities of hydrogen sulfide (H2S) may be present in storage tanks
and bulk transport vessels which contain or have contained this material. Persons opening or entering
these compartments should first determine if H2S is present. See Exposure Controls/Personal
Protection -Section 8. Do not attempt rescue of a person over exposed to H2S without wearing
approved supplied-air or self-contained breathing equipment. If there is a potential for exceeding
one-half the occupational exposure standard, monitoring of hydrogen sulfide levels is required. Since the
sense of smell cannot be relied upon to detect the