Intro to Products

XYLENE

Xylene can be produced together with ethylene, propylene, etc. during naphtha cracking in ethylene plant(NCC), or through extraction together with benzene and xylene, etc. from Reformate Naphtha. It is an aromatic hydrocarbon product, which is an odorous liquid.

CAS number : 1330-20-7 / Molecular formula : C8H10

Plant processes

This plant uses pyrolysis gasoline (PG) as feedstock, and sulfolane, the hydrogenated and extractant, to selectively fractionate aromatic raffinate, and then high-purity benzene, toluene and xylene.

  • Gasoline Hydrogenation Unit
    To produce high-purity products, this unit hydrogenates the double-bond compounds in the high-purity feedstock to make saturated compounds, and removes sulfur compounds and turn them into feedstock suitable for the extraction unit.
    It sends the hydrogenated HEART CUT mixed C6~C8 to the extraction unit, and Raw-C5 is used as feedstock for the C5 plant, whereas C9+ is used as feedstock for the hydrodealkylation unit (HDA).
  • Extraction Unit
    This unit selectively extracts aromatic compounds, among the C6~C8 mixture(HEART CUT), that dissolve well in sulfolane, an extractant. The extracted aromatic compounds are sent to the fractionation unit.
  • Fractionation Unit
    This unit uses the difference in boiling points of aromatic mixture coming from the extraction unit and hydrodealkylation unit to produce high-purity benzene, toluene and xylene.
  • Hydrodealkylation Unit
    This unit turns the C9+ mixture fractionated in the hydrogenation unit into aromatic mixture containing lots of benzene through hydrocracking and hydrodealkylation. This aromatic mixture containing a lot of benzene is sent to the fractionation unit.
Product uses

Utilized for organic pigments, fragrance, dye, diluent, pesticide, medicine, petroleum refining and solvent, etc.

  • Paints
Product inquiry
Product inquiry List
Product Speciality Contact person Phone number Inquiry
XYLENE Lee Hun-su 82-2-6370-5421 Mail inquiry
Properties
MIXED XYLENE
Specifications List
Test Item Unit Test Method Specification
APPEARANCE - - *
Sp.Gr (60/60 ℉) - ASTM D 4052 0.8650~0.8770
APHA COLOR(Pt-Co) - ASTM D 1209 MAX 20
DISTIILATION RANGE
(at 760mmHg)
I.B.P
Dry Point
ASTM D 850 MAX 10
MIN 135
MAX 145
ACID WASH COLOR - ASTM D 848 MAX PASS WITH 6
ACIDITY mgNaOH/100mL ASTM D 847 NONE DETECTED
T-SULFUR Wt-ppm ASTM D 7183 RECORD
COPPER CORROSION - ASTM D 849 PASS
o-XYLENE Wt-% ASTM D 7504 RECORD
m-XYLENE Wt-% ASTM D 7504 RECORD
p-XYLENE Wt-% ASTM D 7504 RECORD
ETHYL BENZENE Wt-% ASTM D 7504 RECORD
NON AROMATIC Wt-% ASTM D 7504 MAX 3.65
ISOMER GRADE XYLENE
Properties List
Test Item Unit Test Method Specification
APPEARANCE - VISUAL CLEAN LIQUID
Sp.Gr (60/60 ℉) - ASTM D 4052 0.8650~0.8770
APHA COLOR(Pt-Co) - ASTM D 1209 MAX 20
DISTIILATION RANGE
(at 760mmHg)
I.B.P
DRY POINT
ASTM D 850 MAX 5℃
MIN 137
MAX 143
ACID WASH COLOR - ASTM D 848 MAX 5
ACIDITY mgNaOH/100mL ASTM D 847 NONE DETECTED
TOTAL SULFUR Wt-ppm ASTM D 7183 RECORD
COPPER CORROSION - ASTM D 849 PASS
o-XYLENE Wt-% ASTM D 7504 RECORD
m-XYLENE Wt-% ASTM D 7504 RECORD
p-XYLENE Wt-% ASTM D 7504 RECORD
ETHYL BENZENE Wt-% ASTM D 7504 RECORD
NON AROMATIC Wt-% ASTM D 7504 MAX 3.65

* The above specifications represent standards may differ from the actual subject matter.