Arsenic is used as a preservative, pesticide, herbicide and as a semiconductor enhancement. The toxic element is found in inorganic and organic compounds and can cause grave problems if humans come into contact with it. More »

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Arsenic is a naturally occurring semi-metal element. Its atomic number is 33, and its only stable isotope has an atomic weight of 74.92. Arsenic has been used since ancient times, but it was first isolated by the German ... More »

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Symptoms of arsenic poisoning include dark urine, abdominal pain, diarrhea and vomiting, according to MedicineNet. Other symptoms include delirium, vertigo and cardiac problems. In extreme cases, arsenic poisoning may re... More »

A useful tool for homeowners and landscapers, 2,4-D killer is a commonly used pesticide and herbicide. Its full chemical name is 2,4-Dichlorophenoxyacetic acid, and was developed by a British scientist after World War II... More »

TBHQ, or tert-butylhydroquinone, is an organic, crystalline substance that is used as a preservative in many foods. It can be found as an additive in many unsaturated vegetable oils and in animal fats that are edible. More »

Salt is used as a preservative because of its low cost and ease of use compared to other preservative methods. Refrigeration requires electricity, while chemical preservatives can alter the taste of food and cause health... More »

Saltpeter, or potassium nitrate, is used as a food preservative and additive. It is also used for fertilizer and is a large component of gunpowder. It is also used as an oxidizing agent for rockets and fireworks. More »