NALCO 77352 (CMIT/MIT mixture) has a very high acute toxicity to fish, aquatic invertebrates, and algae. It is classified as Very Toxic to Aquatic Life (H400) .

As Elias read through the document, the "story" of the chemical unfolded:

Causes severe skin irritation and potentially serious eye damage upon contact. Sensitization: May cause an allergic skin reaction. Environmental Hazard: Very toxic to aquatic life. Hazard Statements H302: Harmful if swallowed. H314: Causes severe skin burns and eye damage. H317: May cause an allergic skin reaction. H400: Very toxic to aquatic life. 3. First Aid Measures (Section 4 of SDS)

Having the SDS is not enough. OSHA requires that employees are trained on:

The story of NALCO 77352 became a quiet legend: not of a spill or a fire, but of a document—a simple safety data sheet—that had spoken clearly, and of two people who had listened.

: He noted the requirement for nitrile gloves and safety goggles. Nalco 77352 was powerful, and the SDS made it clear that while it cleaned the city's water, it shouldn't meet his skin or eyes.

A spill of NALCO 77352 represents a significant environmental and personnel hazard. The following protocol should be followed by trained personnel wearing full PPE:

The Safety Data Sheet (SDS) for Nalco 77352 provides critical information on the safe handling, use, storage, and disposal of this chemical product. The SDS is designed to communicate hazards and precautions associated with the product to ensure the safety of workers, users, and the environment.

: A mixture of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (CMIT/MIT) at 1–5% concentration. Stabilizers/Salts

Under the Globally Harmonized System (GHS) of Chemical Classification, NALCO 77352 carries the signal word . It is classified as an acutely hazardous and corrosive substance.