chemical solutions to concrete problems
For a more in-depth explanation of biodegradability classifications as well as the differences between petroleum-based and water-based form release agents, see Patrick Linn's article, "Understanding Biodegradable Form Release Agents" in the April issue of Concrete Products magazine.
Simply put, biodegradability refers to a product's ability to naturally break down to its raw material state. The quicker it can do so, the more biodegradable it is. Organizations like the Federal Trade Commission (FTC) and the U.S. Environmental Protection Agency (EPA) apply regulations and standards on how to classify products as biodegradable. For example, the FTC requires proof that the "entire product [...] will completely break down and return to nature within one year". In other words, marketers can't just say an item is biodegradable; they must prove it to be.
Readily vs. Inherently Biodegradable
Biodegradability is divided into two classes: readily biodegradable and inherently biodegradable. Both have the the ability to biodegrade to their natural state when exposed to water, sunlight and microbial activity. However, they do so at different speeds. Readily biodegradable products achieve 60-100% break down in 28 days or less while inherently biodegradable products break down at 20-60% in 28 days.
Water-Based vs. Petroleum-Based Form Release Agents
You can find biodegradable release agent options in water-based formulations such as Bio-Nox and petroleum-based formulations. Water-based form release agents are suitable for most form surfaces and are safe in enclosed building sites. They are typically inherently biodegradable but not always readily biodegradable. Petroleum-based form release agents are also suitable on many surfaces and are usable in all weather conditions. Most can be considered inherently biodegradable, but not all are. Some, which incorporate vegetable oil into the formulation, such as Bio-Nox VS, are actually readily biodegradable.
A commitment to using a biodegradable form release agent will require you to pay close attention to the manufacturer's information and do your research. You can find eco-friendly options that offer exceptional results.