What does p-xylene mean?
Definitions for p-xylene
p-xylene
This dictionary definitions page includes all the possible meanings, example usage and translations of the word p-xylene.
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Wikipedia
P-Xylene
p-Xylene (para-xylene) is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes. The p- stands for para-, indicating that the two methyl groups in p-xylene occupy the diametrically opposite substituent positions 1 and 4. It is in the positions of the two methyl groups, their arene substitution pattern, that it differs from the other isomers, o-xylene and m-xylene. All have the same chemical formula C6H4(CH3)2. All xylene isomers are colorless and highly flammable. The odor threshold of p-xylene is 0.62 parts per million (ppm).
Wikidata
p-Xylene
p-Xylene is an aromatic hydrocarbon based on benzene with two methyl substituents with the chemical formula C₈H₁₀ or C₆H₄(CH₃)₂. The “p” stands for para, identifying the location of the methyl groups as across from one another. It is an isomer of xylene. Other isomers include o-xylene and m-xylene. The boiling point of p-xylene is 138.35 °C and the melting point is 13.2 °C. p-Xylene is used on a large scale for the manufacture of terephthalic acid for polyester. Its polymer is known as parylene. p-Xylene is produced by catalytic reforming of petroleum naphtha as part of the BTX aromatics extracted from the catalytic reformate. The p-xylene is then separated out in a series of distillation, adsorption or crystallization and reaction processes from the m-xylene, o-xylene and ethylbenzene. Its melting point is the highest among this series of isomers, but simple crystallization does not allow easy purification due to the formation of eutectic mixtures. It is also highly flammable.
Numerology
Chaldean Numerology
The numerical value of p-xylene in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of p-xylene in Pythagorean Numerology is: 2
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"p-xylene." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/p-xylene>.
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