Answer (1 of 3): tar and pitch, viscous, dark-brown to black substances obtained by the destructive distillation of coal, wood, petroleum, peat, and certain other organic materials. The heating or partial burning of wood to make charcoal yieldstar as a byproduct and is an ancient method for the p...

coal-tar pitch in British English. noun. a residue left by the distillation of coal tar: a mixture of hydrocarbons and finely divided carbon used as a binder for fuel briquettes, road surfaces, and carbon electrodes. Collins English Dictionary.

tar [tahr] a dark brown or black viscid liquid from the wood of various species of pine, or found as a by-product of the destructive distillation of bituminous coal (see coal tar). It is a complex mixture, the source of organic substances such as cresol, creosol, naphthalene, paraffin, phenol, and toluene. Formerly used as an oral medication in ...

pitch. The slope of a roof, sidewalk, or other surface. The Americans with Disabilities Act has specific requirements for the pitch of access ramps leading to building entrances. Example: Figure A has a 1:12 pitch because the slope rises 1 foot for every 12 feet of distance. Figure B has a 1:6 pitch.

Search coal-tar pitch and thousands of other words in English definition and synonym dictionary from Reverso. You can complete the definition of coal-tar pitch given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster...

1. (n.) A sailor; a seaman. 2. (n.) A thick, black, viscous liquid obtained by the distillation of wood, coal, etc., and having a varied composition according to the temperature and material employed in obtaining it.

Black is a color which results from the absence or complete absorption of visible light.It is an achromatic color, without hue, like white and gray. It is often used symbolically or figuratively to represent darkness. Black and white have often been used to describe opposites such as good and evil, the Dark Ages versus Age of Enlightenment, and night versus day.

Definition of tar in the Idioms Dictionary. tar phrase. What does tar expression mean? Definitions by the largest Idiom Dictionary. Tar - Idioms by The Free Dictionary. ... C called pitch. In Situ Catalytic Pyrolysis of Low-Rank Coal for the Conversion of Heavy Oils into Light Oils.

tar and pitch. tar and pitch, viscous, dark-brown to black substances obtained by the destructive distillation of coal, wood, petroleum, peat, and certain other organic materials. The heating or partial burning of wood to make charcoal yields tar as a byproduct and is an ancient method for the production of both tar and pitch.

Coal tar pitch is a black or dark-brown amorphous residue produced by the distillation or heat treatment of coal tar. It is a solid at room temperature and exhibits a broad softening range instead of a defined melting temperature. Synonyms for CTPVs vary depending upon the specific compound (e.g., pyrene, phenanthrene, acridine, chrysene ...

As nouns the difference between tar and pitch is that tar is (uncountable) a black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal or tar can be (computing) a program for archiving files, common on unix while pitch is a sticky, gummy substance secreted by trees; sap or pitch can be a throw; a toss; a cast, as of ...

Apr 22, 2019· Asphalt noun. A composition of bitumen, pitch, lime, and gravel, used for forming pavements, and as a water-proof cement for bridges, roofs, etc.; asphaltic cement. Artificial asphalt is prepared from coal tar, lime, sand, etc. Tar noun. (computing) A …

Pitch definition is - a black or dark viscous substance obtained as a residue in the distillation of organic materials and especially tars. How to use pitch in a sentence. Synonym Discussion of pitch.

Definition of Pitch in the Definitions.net dictionary. Meaning of Pitch. What does Pitch mean? Information and translations of Pitch in the most comprehensive dictionary definitions resource on the web. ... "the roof had a steep pitch" pitch, tar noun. any of various dark heavy viscid substances obtained as a residue. pitch, pitch shot noun. a ...

n tar A small silver coin formerly current on the Malabar coast, especially at Tellicherri and Calicut. Sixteen tars of Calicut equal one fanam; one tar of Tellicherri is equivalent to four reas, and one hundred tars equal one rupee. n tar A thick dark-colored viscid product obtained by the destructive distillation of organic substances and bituminous minerals, as wood, coal, peat, shale, etc ...

Define Tar and pitch. Tar and pitch synonyms, Tar and pitch pronunciation, Tar and pitch translation, English dictionary definition of Tar and pitch. n. 1. A dark, oily, viscous material, consisting mainly of hydrocarbons, produced by the destructive distillation of organic substances such as wood, coal,...

Jul 20, 2016· But coal tar and petroleum are not the only source for pitch. Anyone who takes the time to consult a reasonable dictionary of geology will find that pitch can be extracted by distilling or heating wood. In fact, prior to the rise of the petroleum and coal industries, this was exactly how pitch was made.

tar [tahr] a dark brown or black viscid liquid from the wood of various species of pine, or found as a by-product of the destructive distillation of bituminous coal (see coal tar). It is a complex mixture, the source of organic substances such as cresol, creosol, naphthalene, paraffin, phenol, and toluene. Formerly used as an oral medication in ...

ducing or using pavement tar, roofing tar, coal-tar pitch, coal-tar paints, coal-tar enamels, other coal-tar coatings, or refractory bricks. The concentrations of PAHs in ambient air ranged from 0 to 200 μg/ m 3 near roof-tarring operations and from 0 to 3,700 μg/m near pave-ment-tarring operations. Another study found that coal-tar pitch

Tar. Tar is a black thermoplastic material produced by the destructive distillation of coal – sometimes referred to as coal tar. Is also a residue in the manufacture of coal gas and coke. May also be derived from plants such as pine trees. Pitch. Pitch is the name …

pitch (n.2) "thick, tenacious, resinous substance obtained from tar or turpentine, wood tar," late 12c., pich, piche, from Old English pic "pitch," from a Germanic borrowing (compare Old Saxon and Old Frisian pik, Middle Dutch pik, Dutch pek, Old High German pek, German Pech, Old Norse bik) of Latin pix (genitive picis) "pitch" (source of Old French poiz), from PIE root *pik-"pitch" (source ...

Tar is a very thick liquid that's used to cover road surfaces. You can't walk on fresh, hot tar—you have to wait until it's completely dry.

1.3.2.3.1 Coal tar pitch. 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.

Definition statement. Working-up, e.g.processing, of tar, pitch, asphalt or bitumen, including use of techniques such as distillation, heat-treatment, water removal or extraction with selective solvents. Working up implies improvement of the material. Production of pyroligneous acid.

Sap, Resin, and Pitch – What Are the Differences? Sap is where pancake syrup comes from, resin clogs your smoking pipes, and pitch is what you do with a ball, right? Well, not quite, close though. Sap is the lifeblood of trees and other plants, but usually when we refer to sap we are thinking in terms of a tree.

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.

Petroleum pitch is an alternative and supplement to coal tar pitch. The PAH level is up to 10 times lower then coal tar pitch without considerable lowering of the carbon content. Petroleum pitch is used for the production of refractory bricks, clay pigeons and as an impregnation pitch for graphite electrodes.

Tar definition, any of various dark-colored viscid products obtained by the destructive distillation of certain organic substances, as coal or wood. See more.

Pitch, in the chemical-process industries, the black or dark brown residue obtained by distilling coal tar, wood tar, fats, fatty acids, or fatty oils.. Coal tar pitch is a soft to hard and brittle substance containing chiefly aromatic resinous compounds along with aromatic and other hydrocarbons and their derivatives; it is used chiefly as road tar, in waterproofing roofs and other structures ...

tar - WordReference English dictionary, questions, discussion and forums. All Free. ... Chemistry coal-tar pitch. Chemistry smoke solids or components: cigarette tar. beat, knock, or whale the tar out of, [Informal.] to beat mercilessly: The thief had knocked the tar out of the old man and left him for dead.