A Nephrotoxin is a chemical which may cause kidney damage. Common examples include antimony compounds, dimethyl sulphoxide, dimethylformamide and tetrahydrofuran. Many neurotoxins, such as some mercury compounds, are highly toxic, and must only be used under carefully-controlled conditions. A Nuisance material is one which can cause transient irritation or discomfort, but which has no long-term or systemic effects. The Odour Threshold is the lowest concentration of a vapour in air which can be detected by smell.
Peroxidizable materials can form peroxides in storage, generally when in contact with the air.
These peroxides present their most serious risk when the peroxide-contaminated material is heated or distilled, but they may also be sensitive to mechanical shock. The quantity of peroxides in a sample may be determined using a simple peroxide test strip. Photoallergic Contact Dermatitis is a skin condition brought on by exposure to light following skin contact with certain types of chemicals, such as sulphonamides. Poison Class A or B Poisons are classified by the DOT into two classes. Those in Class A are highly toxic materials which, even in very small quantities, present a hazard to life.