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Tetrachlorobenzene isomers added to ProEZGC!

Tetrachlorobenzenes are manufactured as intermediates for the production of fungicides, herbicides, defoliants, insecticides as well as dielectric fluids for transformers (1). There are three isomers with the following chlorine substitutions; 1,2,3,4 / 1,2,3,5 / 1,2,4,5. While the chemical industry measures these compounds for purity they are also found in the environment as the result of […]

Glycols…. Tis The Season!

Tis the season to be thinking about glycols…. Why you ask?  Well its currently winter as I’m writing this and glycols, specifically propylene glycol (PG) and ethylene glycol (EG), along with other ingredients, are used in airports for deicing planes.  Propylene glycol based fluids are more common since they are less toxic than ethylene glycol […]

Choosing Your Citral Column

The name ‘citral’ or 3,7-dimethyl-2,6-octadienal, suggests the scent of lemons so it’s not surprising that another name for this compound is lemonal. There are two isomers of this compound with the same chemical formula (C10H16O); geranial (citral A) and neral (citral B). As seen in the image to the right, the difference between these compounds […]