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Phase behavior Triple point: 286.3 K (13.15 °C), ? Pa Critical point: 617 K (344 °C), 3500 kPa Std enthalpy change of fusion, Δ fus H o: 17.1 kJ/mol Std entropy change
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.
p-Xylene is the principal precursor to terephthalic acid and dimethyl terephthalate, both monomers used in the production of polyethylene terephthalate (PET) plastic bottles and polyester clothing. 98% of p-xylene production, and half of all xylenes produced is consumed in this manner. [10] [14] o-Xylene is an important precursor to phthalic ...
The highest peak in the field is Humphreys Peak, at Flagstaff's northern perimeter: the peak is Arizona's highest at 12,633 feet (3,851.5 m) and is a part of the San Francisco Peaks, an active [2] stratovolcano complex.
Agassiz Peak at the center, and Fremont Peak at left. The northernmost district, known as the Flagstaff District, is home to the San Francisco Peaks, an ancient group of volcanic summits. The highest peak, Humphreys Peak, is the highest point in Arizona at 12,633 feet (3,851 m). The second, third, and fourth highest peaks in Arizona are found ...
Agassiz Peak is the second-highest mountain in the U.S. state of Arizona at 12,360 feet (3,767 m). It is located north of Flagstaff, Arizona in the San Francisco Peaks. It is in the Kachina Peaks Wilderness on the Coconino National Forest. The peak was named in honor of Louis Agassiz, a Swiss-born American biologist and geologist. [3]
It is the fifth-highest point in the state, and the highest outside the San Francisco Peaks in the Flagstaff area. [9] An unnamed sub-peak with an elevation of 10,890 feet (3,319 m) exists approximately 0.5 miles (0.8 km) to the north of the summit that is off reservation and accessible to the public via maintained trail. [10] [11] A third peak ...
multiple broad peaks C─O alcohols: primary 1040–1060 strong, broad secondary ~1100 strong tertiary 1150–1200 medium phenols any 1200 ethers aliphatic 1120 aromatic 1220–1260 carboxylic acids any 1250–1300 esters any 1100–1300 two bands (distinct from ketones, which do not possess a C─O bond) C─N aliphatic amines any 1020–1220