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%ما هو (من)٪ 1 - تعريف

AROMATIC HYDROCARBON

Xylol; Dimethylbenzene; Xylenes; Dimethyl benzene; Xylyl; Zyleen; Zylene; Dimethylbenzenes; Xilol; Dimethyl benzol

xylene

['z??li:n]

¦ noun Chemistry a volatile liquid hydrocarbon obtained by distilling wood or petroleum, used in fuels and solvents and in chemical synthesis.

Origin

C19: from xylo- + -ene.

Xylene

·noun Any of a group of three metameric hydrocarbons of the aromatic series, found in coal and wood tar, and so named because found in crude wood spirit. They are colorless, oily, inflammable liquids, C₆H₄·(CH₃)₂, being dimethyl benzenes, and are called respectively orthoxylene, metaxylene, and paraxylene. Called also xylol.

Xylene

In organic chemistry, xylene or xylol (;. IUPAC name: dimethylbenzene) are any of three organic compounds with the formula .

https://en.wikipedia.org/wiki/Xylene

ويكيبيديا

Xylene

In organic chemistry, xylene or xylol (from Greek ξύλον (xylon) 'wood'; IUPAC name: dimethylbenzene) are any of three organic compounds with the formula (CH₃)₂C₆H₄. They are derived from the substitution of two hydrogen atoms with methyl groups in a benzene ring; which hydrogens are substituted determines which of three structural isomers results. It is a colorless, flammable, slightly greasy liquid of great industrial value.

The mixture is referred to as both xylene and, more precisely, xylenes. Mixed xylenes refers to a mixture of the xylenes plus ethylbenzene. The four compounds have identical empirical formulas C₈H₁₀. Typically the four compounds are produced together by various catalytic reforming and pyrolysis methods.

https://en.wikipedia.org/wiki/Xylene

أمثلة من مجموعة نصية لـ٪ 1

1. "This is, as Pink Floyd would say, another brick in the wall." Some environmentalists are still pushing to eliminate two other air toxics that improve gasoline performance, toluene and xylene, as well as to clean up diesel fuel.

2. Al–Mady explained that the YANSAB complex will add a total annual capacity exceeding four million tons of petrochemical products, including 1.3 million tons of ethylene, 400K tons of propylene, '00K tons of polyethylene, 400K tons of polypropylene, 770K tons of Ethylene Glycol, in addition to 250K tons of Benzene, Xylene and Toluene mixtures, and 100K tons of (butene–1), (butene–2).

3. Yansab will produce 1.3 million tons of ethylene, 400,000 tons of propylene, '00,000 tons of polyethylene, 400,000 tons of polypropylene, 700,000 tons of ethylene glycol, 250,000 tons of benzene, xylene and toluene, and 100,000 tons of butane–1 and butane–2.

4. Trade and Development Agency (USTDA) awarded a $570,000 grant yesterday to Petron Corporation, the largest oil refining company in the Philippines, to partially fund a feasibility study for the development of a benzene–toluene–xylene (BTX) recovery and extraction unit.Â Ms.

5. Khalid D. al–Faddagh, President and Chief Executive Officer, signed the agreement on behalf of Petron.Â This study will include a basic engineering design for the construction of a new BTX recovery unit that will allow Petron to recover benzene and toluene, as well as increase its mixed–xylene production and recovery capabilities.Â These petrochemicals will be extracted from Petron‘s own gasoline component production.Â This unit will further enhance Petron‘s capability to meet more stringent gasoline quality requirements under the Philippine Clean Air Act, while providing the company with the aromatic petrochemicals, BTX, which it can sell to domestic and regional markets.Â The USTDA grant will supplement the resources that Petron is allocating for the study.