Physical properties of carbon nine, a byproduct of ethylene
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Physical properties of nonane, a byproduct of ethylene. Last edited by DAC The army rules the world on 2008-6-16 09:06]
It mainly refers to the nine-carbon aromatic fraction produced as a by-product of catalytic reforming and cracking for ethylene production. The main components include isopropylbenzene, n-propylbenzene, ethyltoluene, p-xylene, m-xylene, o-xylene, indene, etc. Nonaarenes account for about 80% to 90% of the reformed heavy aromatics, of which trimethylbenzene makes up 50%, while benzene accounts for 20% to 25%. In the heavy aromatics of pyrolytic gasoline, nonane aromatics account for 20%, of which trimethylbenzene makes up 4% to 6%. The carbon nine aromatic hydrocarbon fraction is complex, with similar boiling points, making it difficult to separate them individually. Currently, p-xylene and m-xylene are the main components that are separated for use in the production of phthalic anhydride and isophthalic anhydride, among other substances, which are then used in coatings and synthetic resins. The carbon nine aromatic hydrocarbon fraction can be used directly to produce petroleum resins, and is generally also used as fuel.
Thank you for your reply, senior, but what I’m looking for are physical properties, such as specific gravity, color, and flowability at room temperature
I need it too, and what about its heat of combustion? ? ? ?
Specific gravity: 0.86–0.93; color: slightly yellow or colorless; flow rate ranges from 80 to 200; flash point >40; available in reformed cracking and hydrogenation variants
The pyrolyzed C9 produced by various ethylene plants varies, so their physical properties fall within a general range
Test Methods for Product Specifications: JLA-100, JLA-110, JLA-120
Appearance: Colorless and transparent liquid – Visual inspection
Density (20°C), kg/cm³: 850–890, 860–875, 875–890 – GB/T 1884-2000
Boiling range, °C: Initial boiling point ≥140, 155, 160 – GB/T 6536-1997; Final boiling point ≤180, 175, 185
Aromatic content, %: ≥99.0 – Gas chromatography method
Flash point (closed cup), °C: ≥40, 40, 45 – GB/T 261-1983(1991)
Saybolt color number: ≥+28 – GB/T 3555-1992
Appearance: Colorless and transparent liquid – Visual inspection
Density (20°C), kg/cm³: 850–890, 860–875, 875–890 – GB/T 1884-2000
Boiling range, °C: Initial boiling point ≥140, 155, 160 – GB/T 6536-1997; Final boiling point ≤180, 175, 185
Aromatic content, %: ≥99.0 – Gas chromatography method
Flash point (closed cup), °C: ≥40, 40, 45 – GB/T 261-1983(1991)
Saybolt color number: ≥+28 – GB/T 3555-1992
Not to mention different factories, even within the same factory there are differences between batches of materials; factories can generally only guarantee quality within a certain range.
Why is carbon 9 green in color? And the degree of polymerization is low due to cold polymerization