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The Chemistry of Petrol & The Tetraethyl Lead Story

18th May marks the date of birth of Thomas Midgley, who made significant contributions to something many of us make use of on a regular basis: petrol. Midgley was the research assistant to Charles Kettering, and the duo were responsible for the addition of the compound tetraethyl lead to petrol, an more

Chemical Warfare & Nerve Agents

It’s been a little while since the last post on chemical warfare agents on the site, in which we looked at the G series nerve agents, including sarin and tabun. The second of the two graphics looking at nerve agents focuses this time on the V series, including the infamous VX. The V series compounds more

The Chemistry of Deodorants vs. Antiperspirants

Deodorants and antiperspirants are products that the majority of us make use of everyday. The two terms aren’t interchangeable, however; there is a difference in the manner in which they act to reduce body odour. Today’s graphic is a collaboration with ACS Reactions looking at the chemical compounds more

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q&more articles Toxicity

  • The Right Dose

    Although acute toxicity studies in animals are an indispensable prerequisite for the ­realisation of clinical trials in humans, these can only be projected to humans to a limited extent, and thus are scientifically problematic and ethically questionable. Therefore, the international regulatory authorities increasingly recommend the use of alternative in vitro methods in the framework of safety studies in accordance with the ”3R Principle“ (Replacement, Reduction, Refinement). more

Definition

Oxygen toxicity

Oxygen toxicity Oxygen toxicity or oxygen toxicity syndrome (also known as the "Paul Bert effect") is severe hyperoxia caused by breathing oxygen at elevated partial pressure s. The high concentration of oxygen damages cell s. The precise mec ... more

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