what is the use of coal tar

Precautions

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What is the best use of coal?

Uses of Coal

• Different Uses of Coal. Coal is seemingly the cheapest and most essential source of energy. ...
• Generating Electricity. Coal is generally used in thermal power generation which further helps to produce electricity. ...
• Production of Steel. ...
• Industries. ...
• Gasification and Liquefaction. ...
• Specialist Products. ...
• Domestic Use. ...

What are common uses of coal?

Tar made from coal or petroleum is considered toxic and carcinogenic because of its high benzene content, though coal tar in low concentrations is used as a topical medicine.

Is coal tar harmful to humans and in which way?

Why Use Natural Gas Instead of Coal

• Different Pollution Percentages. While it’s hard to go completely green without sacrifice, using natural gas as a main natural resource is taking our planet in the right direction.
• The Health Advantage. ...
• Environmental Concern. ...

What is better to use instead of coal?

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What are the uses of coal tar class 8?

Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives. It can be utilized to make insecticides and pesticides.

What are the benefits of coal tar?

Coal tar is used to treat eczema, psoriasis, seborrheic dermatitis, and other skin disorders. Some of these preparations are available only with your doctor's prescription.

Can you use coal tar everyday?

Safety: Dermatologists have been prescribing coal tar for more than 100 years to treat psoriasis, and it is considered safe for long-term use.

Should I use coal tar?

It may cause some side effects, while certain treatments require that they carry a cancer warning in some locations. However, experts generally consider it safe to use. People use coal tar to treat skin conditions such as psoriasis and eczema. It can also help reduce inflammation, scaling, and itching.

What is tar coal called in English?

coal tar in American English a black, thick, opaque liquid obtained by the destructive distillation of bituminous coal, used in making dyes, medicines, plastics, paints, etc.

How is coal tar made?

Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature. It is a black, viscous liquid composed primarily of a complex mixture of condensed-ring aromatic hydrocarbons.

How long does it take for coal tar to work?

If you have scalp psoriasis, your doctor may recommend that you use coal tar shampoo. It's very important to make sure the shampoo gets on your scalp. Leave it in place for 5 to 10 minutes before you rinse it out.

What is the smell of coal tar?

unpleasant smellCoal tars are complex and variable mixtures of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. Hence have unpleasant smell.

What products contain coal tar?

Where is Coal tar found? Coal tar is found in medical shampoo, soap, ointment, and as a treatment for dandruff and psoriasis.

Is coal tar used in roads?

Coal tar is mostly used for road works. Wood tar: It is obtained by distillation of pine wood and other resinous wood. It has a strong preservative property for wood as it consists of creosote oil.

Is coal tar flammable?

Coal tar fumes are highly flammable and are easily ignited by heat, sparks, or flames. Vapors are heavier than air. They may travel to a source of ignition and flash back and may form explosive mixtures with air. Vapors will spread along ground and collect in low or confined areas (sewers, basements, tanks).

Is coal tar soap good for skin?

Coal tar soap might be helpful in reducing scaling, itching, and inflammation. It has few side effects, although exactly how it works isn't clear. According to the National Psoriasis Foundation, coal tar helps slow skin cell growth and improves skin's appearance.

How long does it take for coal tar to work?

If you have scalp psoriasis, your doctor may recommend that you use coal tar shampoo. It's very important to make sure the shampoo gets on your scalp. Leave it in place for 5 to 10 minutes before you rinse it out.

How long does it take for coal tar shampoo to work?

Coal tar shampoo works best if you leave it in for a full ten minutes after lathering. You can even rinse and repeat if necessary. Don't use conditioner afterwards.

Is coal tar antibacterial?

Coal tar is one of the oldest treatments for psoriasis and eczema. It has anti-inflammatory, antibacterial, antipruritic and antimitotic effects. The short-term side effects are folliculitis, irritation and contact allergy. Coal tar contains carcinogens.

How effective is coal tar for psoriasis?

Additionally, it may help reduce inflammation, itching, and scaling. According to a 2021 review , around 80% of psoriasis cases involve the scalp, and coal tar is an effective treatment for psoriasis on this part of the body.

Uses

Coal tar is used in medicated shampoo, soap and ointment. It demonstrates antifungal, anti-inflammatory, anti-itch, and antiparasitic properties. It may be applied topically as a treatment for dandruff and psoriasis, and to kill and repel head lice. It may be used in combination with ultraviolet light therapy.

Safety

Side effects of coal tar products include skin irritation, sun sensitivity, allergic reactions, and skin discoloration. It is unclear if use during pregnancy is safe for the baby and use during breastfeeding is not typically recommended.

Mechanism of action

The exact mechanism of action is unknown. Coal tar is a complex mixture of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds.

Composition

Coal tar is produced through thermal destruction ( pyrolysis) of coal. Its composition varies with the process and type of coal used – lignite, bituminous or anthracite.

Derivatives

Various phenolic coal tar derivatives have analgesic (pain-killer) properties. These included acetanilide, phenacetin, and paracetamol aka acetaminophen. Paracetamol may be the only coal-tar derived analgesic still in use today. Industrial phenol is now usually synthesized from crude oil rather than coal tar.

Society and culture

Coal tar is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system. Coal tar is generally available as a generic medication and over the counter.

Warnings

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

How should I use coal tar?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

What happens if I miss a dose?

Since coal tar topical is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

An overdose of coal tar topical is not expected to be dangerous. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222 if anyone has accidentally swallowed the medication.

What should I avoid while using coal tar?

Do not use coal tar together with other psoriasis medications unless your doctor tells you to.

Coal tar side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

What other drugs will affect coal tar?

It is not likely that other drugs you take orally or inject will have an effect on topically applied coal tar. But many drugs can interact with each other. Tell each of your health care providers about all medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products.

What is coal tar?

Coal tar is derived from coal. It is a byproduct of the production of coke, a solid fuel that contains mostly carbon, and coal gas. Coal tar is used primarily for the production of refined chemicals and coal-tar products, such as creosote and coal-tar pitch.

What is coal-tar pitch?

Coal-tar pitch is a thick black liquid that remains after the distillation of coal tar. It is used as a base for coatings and paint, in roofing and paving, and as a binder in asphalt products. Both coal tar and coal-tar pitch contain many chemical compounds, including carcinogens such as benzene.

How are people exposed to coal tar and coal-tar pitch?

The primary routes of human exposure to coal tars and coal-tar products are inhalation, ingestion, and absorption through the skin. Exposure to coal tars and coal-tar pitches may occur at foundries and during coke production, coal gasification, and aluminum production.

Which cancers are associated with exposure to coal tar and coal-tar pitch?

Occupational exposure to coal tar or coal-tar pitch increases the risk of skin cancer. Other types of cancer, including lung, bladder, kidney, and digestive tract cancer, have also been linked to occupational exposure to coal tar and coal-tar pitch.

How can exposures be reduced?

Exposures to coal tar and coal-tart pitch are regulated under the U.S. Occupational Safety and Health Administration’s (OSHA) Air Contaminants Standard for general industry, shipyard employment, and the construction industry. OSHA provides detailed safety and health information about coal-tar pitch to the public.

Selected References

National Toxicology Program. Coal Tars and Coal-Tar Pitches, Report on Carcinogens, Fourteenth Edition. Triangle Park, NC: National Institute of Environmental Health and Safety, 2016. Also available online. Last accessed December 28, 2018.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

Missed Dose

If you miss a dose of this medicine, apply it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Century-old remedy remains a safe and viable treatment

Dean R. Goodless, MD, is a board-certified dermatologist specializing in psoriasis.

Effectiveness

Coal tar belongs to a class of drugs called keratoplastics, which also include benzoyl peroxide, tretinoin, and salicylic acid. It works by directly interfering with the synthesis of DNA in the skin. This action can help slow the abnormal buildup of skin cells and decrease the size of psoriatic plaques. 3

Side Effects

Over-the-counter (OTC) coal tar products are considered safe if used in concentrations between 0.5% and 5%. 5 More potent coal tar is more likely to cause irritation and dryness. These side effects can be minimized by applying moisturizer before the coal tar preparation.

Products and Formulations

Coal tar is found in a plethora of OTC shampoos, as well as creams, gels, and bath additives. Compound pharmacists can mix crude coal tar (which has a black, paste-like texture) or an alcohol-based coal tar solution with all sorts of bases, including steroid creams and ointments.

What to Look For

There are literally hundreds of different coal tar preparations found on drugstore shelves and online. When choosing a product, opt for one that has undergone testing with an independent certifying body like the U.S. Pharmacopeia (USP), NSF International, or ConsumerLab.

What is this medicine?

COAL TAR (kohl tahr) is used on the scalp to treat dandruff and other conditions including psoriasis and seborrheic dermatitis.

How should I use this medicine?

This medicine is for external use only. Follow the directions on the label. Wet hair. Massage shampoo into scalp. Lather and leave on hair and scalp for several minutes. Rinse and repeat. Wash hands well after use. Do not use more often than directed.

What if I miss a dose?

If you miss a dose, use it as soon as you can. If it is almost time for your next dose, use only that dose. Do not use double or extra doses.

What should I watch for while using this medicine?

This medicine can stain your skin, nails, hair, or clothing. The color should wash out of your skin, nails and hair a few days after you stop using it. Clothing may be permanently stained.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

How to use coal tar topical

Follow all directions on the product package. Check the label to see if you need to shake the product before using. If you have any questions, ask your doctor or pharmacist.

Are you currently using coal tar topical?

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Overview

Uses

Safety

Mechanism of action

Composition

Coal tar is a thick dark liquid which is a by-product of the production of coke and coal gas from coal. It is a type of creosote. It has both medical and industrial uses. Medicinally it is a topical medication applied to skin to treat psoriasis and seborrheic dermatitis (dandruff). It may be used in combination with ultraviolet light therapy. Industrially it is a railroad tie preservative and used in the surfacing of roads. Coal tar was listed as a known human carcinogen in the first Report on Carci…

Derivatives

Society and culture

See also