Category: Chemicals

Today’s workplace uses thousands of chemicals, many of which are hazardous. The resources in this section will help guide you in the safe and legal identification, storage, transport, and use of these chemicals, and in making sure that your employees right to know how to be safe around such substances is provided, as required by law.

Sulfur dioxide molecular structure

Sulfur Dioxide Permissible Exposure Limits: OSHA vs. NIOSH

The combustion of fossil fuels accounts for 75% to 85% of emissions of sulfur dioxide (SO2), but the chemical is also generated by multiple industrial activities, including the manufacture of hydrosulfites and other sulfur-containing chemicals; to bleach wood pulp and paper; to process, disinfect, and bleach food; for waste and water treatment in metal and […]


TSCA Fees Proposed for FY2019-FY2021

In its latest rulemaking to implement the 2016 amendments to the Toxic Substances Control Act (TSCA), the EPA is proposing a fee structure to partly defray the Agency’s administrative costs. The fee authority was authorized by Congress to provide the Agency with a sustainable source of funds to fulfill its legal obligations, mainly under three […]


Confidential Business Information under TSCA

The EPA has floated several approaches to assigning unique identifiers (UIDs) to chemical substances to protect information claimed as confidential by the manufacturers of the substances.


Fewer Field Trials Needed to Register Seed-Treatment Uses

The Health Effects Division (HED) of EPA’s Office of Chemical Safety and Pollution Prevention has issued a memo that explains when the number of field trials to develop residue data for seed-treatment uses can be reduced.


Progress Made on TSCA Risk Evaluations, EPA Reports

As required by the 2016 amendments to the Toxic Substances Control Act (TSCA), the EPA has issued its second annual plan identifying existing chemical substances for which risk evaluations are expected to be initiated or completed in 2018, the resources necessary for their completion, the status of each risk evaluation initiated but not yet completed, […]

Chemicals TSCA

TSCA Reporting Deadline Is Approaching for Chemical Manufacturers

In August 2017, the EPA finalized the Toxic Substances Control Act (TSCA) Inventory Notification Requirements, less formally referred to as the TSCA Inventory Reset Rule. The purpose of the rule is to clarify the status of the tens of thousands of chemicals in the TSCA Chemical Substance Inventory by designating each as either “active” or […]


What’s Changed with Tier II Reports?

The new year has just arrived, but March 1 will be here before you know it and, with it, the deadline for submitting your Tier II Hazardous Chemical Inventory reports. Much has stayed the same for Tier II reporting, but do you know what has changed on this year’s Tier II report?


Sometimes, It’s the Little Things That Get You: New Guidance on Engineered Nanomaterials

When Martians invaded Earth in H.G. Wells’s novel, War of the Worlds, none of Earth’s armies and none of Earth’s weapons could stop their relentless march. What ultimately saved humanity? A microscopic bacterium. As the unfortunate Martian invaders discovered, sometimes it’s the little things that get you. In a nonfiction analogue, researchers who work with […]


Nanoparticles Have Many Benefits; International Agencies Are Still Working on the Hazards

In Lawrence Raab’s poem, “Attack of the Crab Monsters,” a biochemist bewails the fact that his research has outstripped his preparedness to deal with its potential hazards. “It’s the old story, predictable/as fallout,” the narrator opines, “the rearrangement of molecules.” The narrator’s molecules have been rearranged into the form of a crab-monster—“I’m not used to […]

Laboratory safety, fume hood

PFAS in the Workplace

Yesterday we discussed a recent U.S. Environmental Protection Agency (EPA) initiative to address per- and polyfluoroalkyl substances (PFAS). Today we will look at ways to control PFAS exposure in the workplace.