Most of them seemed to have coal tar in some form.

Do not use coal tar to treat large skin areas.

Some forms of coal tar may be applied 1 to 4 times per day.

Check the label of any coal tar product you are using.

There may be other drugs that can interact with coal tar.

Use coal tar carefully near the eyes or in skin folds.

Some coal tar preparations can be put on for several hours and then washed out.

Do not use coal tar over long periods of time without your doctor's advice.

Shake the coal tar shampoo well just before each use.

Store coal tar at room temperature away from moisture and heat.

Operations were still based on coal tar, salt, and construction materials.

Coal tar was a component of the first sealed roads.

Talk with your doctor before using coal tar if you are allergic to any of the ingredients.

In low concentrations, however, coal tar is used as a topical medicine.

The dye, derived from coal tar, was invented in 1856.

The bank discovered that the land below the building contained coal tars.

Coal tar products may also be used in the bath or as a hand/foot soak.

Some forms of coal tar can stain fabric or other surfaces.

Your pharmacist can provide more information about coal tar.

Contemporary oil colors often use coal tar lakes as a substitute.

The substance is a sodium salt derived from coal tar.

Coal tar can also decrease itchiness from these skin conditions.

Your first job would be to distil the coal tar products."

Coal tar preparations may be used if the corticosteroids are not effective.

Coal tar remained the primary source until the development of the petrochemical industry.

Don't you see how many uses we have found for this refuse coal-tar?

What do you think of that from the coal-tar.

The night was black, like a barrel of coal-tar.

Over 90% of commercial food colourings are derived from coal-tar.

Some thinking they would catch the plague, dipped oakum in coal-tar, and at intervals held it to their nostrils.

Keroselene is a highly volatile derivative during the steam distillation of coal-tar.

We have one hundred thousand kilometres of cast-iron water-pipes lined with coal-tar, which contains some fluoranthene.

The Industrial Revolution saw the development of chemical dyes, as derivatives from side-products of coal-tar.

Indole is a major constituent of coal-tar, and the 220-260 C distillation fraction is the main industrial source of the material.

Bitumen (asphalt or coal-tar) is a mixed substance made up of organic liquids that are highly sticky, viscous, and waterproof.

The chemical which supplies the colouring is dihydroscyanthraquinone, also called alizarin; this was found to be a derivative of the hydrocarbon anthracene, from coal-tar.

Corings had revealed complex mixtures of organic compounds, rather like frozen coal-tar - though it was certain that life had never played any part in their formation.

Often the bodies of cholera victims were wrapped in cotton or linen and doused in coal-tar or pitch before placing into a coffin.

Paracetamol is the only coal-tar derived analgesic still in use today, but industrial phenol is now usually synthesized from crude oil rather than coal tar.

He was responsible for the use of fluorescence spectroscopy in the collaborative study of carcinogenic agents in coal-tar which led to the discovery of the activity of 3:4 - benzpyrene.

When you have a new ribbon for your hat; or a pretty red dress, or your grandmamma buys a new violet ribbon for her cap, just ask if they are dyed with aniline colors; and if the answer is "Yes," you may know that they came from the coal-tar.