What is pitch in coal tar?

What is pitch in coal tar?

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.

What are the hazardous effects of coal tar?

Prolonged or repeated contact can cause thickening of the skin and pigment changes. ► Inhaling Coal Tar Pitch can irritate the nose, throat and lungs. ► Exposure to Coal Tar Pitch vapor can cause headache, fatigue, dizziness, irritability and mood changes. Higher levels can cause fainting and even coma.

How is coal tar pitch made?

Coal tar pitch is a black, viscous residue that remains after the distillation of coal tar. This process occurs at our plants and involves heating coal tar (the raw material used to produce coal tar pitch) in a still.

Is pitch produced by coal or coal tar?

One of the major products produced is coal tar pitch. Since that time, coal tar pitch has become the binder of choice for the aluminum, commercial carbon, and graphite industries. A science has developed around defining the quality of a binder pitch based on its physical properties.

What are pitch used for?

Pitch is used in the manufacture of roofing paper, in varnishes, as a lubricant, and as a binder for coal dust in the making of briquettes used as fuel. Coal-tar derivatives are used in the manufacture of dyes, cosmetics, and synthetic flavoring extracts.

What is pitch liquid?

‘Pitch’ is the name for any of a number of highly viscous liquids which appear solid, most commonly bitumen, also known as asphalt. At room temperature, tar pitch flows at a very low rate, taking several years to form a single drop.

What is pitch flammable?

Wood that’s impregnated with pitch is interchangeably called lightwood or pitch wood. In some cases, a tree will produce so much resin that the sappy substance actually exudes from the wood in the form of highly flammable, yellowish globs–known as pitch balls t hat cling to the bark.

What chemicals are in coal tar?

Coal tar is a complex mixture of a larger number of aromatic hydrocarbons (benzene, naphthalene, anthracene, phenanthrene and their homologues), aromatic acids and nitrogen-containing compounds and it transpired that it was better to study the carcinogenic effect of separate fractions obtained by distillation at …

What is coal tar pitch distillation?

The residue of distillation is coal tar pitch, which is further processed into coal tar pitch of desired chemical and physical properties. The primary objective of coal tar distillation process is to produce a number of tar acid products from the crude tar.

What is pitch made from?

Pitch is a viscoelastic polymer which can be natural or manufactured, derived from petroleum, coal tar, or plants. Various forms of pitch may also be called tar, bitumen, or asphalt. Pitch produced from plants is also known as resin. Some products made from plant resin are also known as rosin.

What is pitch fluid?

Whats is a pitch?

1 : highness or lowness of sound. 2 : amount of slope The roof has a steep pitch. 3 : an up-and-down movement the pitch of a ship. 4 : the throw of a baseball or softball to a batter. 5 : the amount or level of something (as a feeling) Excitement reached a high pitch.

What are the dangers of coal tar?

f Coal Tar Pitch can irritate the eyes on contact. f Skin contact can cause irritation, rash and burning which is aggravated by sunlight. f Inhaling Coal Tar Pitch can irritate the nose, throat and lungs causing coughing, wheezing and/or shortness of breath, hoarseness and nosebleeds f Exposure to Coal Tar Pitch vapor can cause headache,

What is coal tar pitch used for?

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.

What does the coal tar pitch consist of?

Coal tar pitch is defined as the residue (nonvolatile at 450°C) from the distillation of coal tars produced by the high temperature pyrolysis (>1000°C) of coal. 40 The molecular structure of coal tar pitches usually consists of an aromatic core with only a few methyl groups attached. In that sense, coal tar pitch is more aromatic and has a

What are coal tar products?

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. Naphthalene balls that are commonly used to keep moths away are made from tar. Coal tar is an ingredient of anti-dandruff and lice-repelling shampoos, soaps and ointments.