دات نت نیوک
STYRENE MONOMER (SM)

DESCRIPTION

Styrene (vinyl benzene, styrene monomer SM) is a colorless to yellowish oily liquid with a distinctive aromatic odor. It is sparingly soluble in water but soluble in alcohols, ethers and carbon disulfide. This valuable monomer is flammable, reactive and toxic. Styrene Monomer is a light liquid. It has a low vapor pressure and high refractive index. It is chemically reactive and undergoes polymerization readily (by heat, light or peroxide catalysts).

 

APPLICATIONS

Styrene Monomer is most commonly used in the production of valuable styrene homopolymers and copolymers, which are either solid (SPS) or expandable (EPS). Some SPS grades are used for the production of disposable transparent containers and EPS grades are useful in the fabrication of blocks for thermal insulation and boxes for vegetables and fruits. High Impact Polystyrene (HIPS) is polystyrene blended with rubber for better mechanical properties useful in the production of dairy products, packaging materials and sheets. The copolymers of SM with butadiene and/or acrylonitrile create valuable products combining characteristics of synthetic rubbers and strong plastics. An approximate breakdown of styrene’s markets are:

  • 54% solid polystyrene (PS)
  • 8% expandable polystyrene (EPS)
  • 8% styrene butadiene latex (SBL)
  • 7% acrylonitrile-butadiene-styrene/terpolymer (ABS)
  • 7% unsaturated polyester resins (UPR)
  • 5% styrene-butadiene rubber (SBR)
 

STORAGE AND HANDLING

Styrene Monomer is stored in insolated carbon steel tanks. To prevent Styrene polymerization, the Styrene temperature must be controlled at around 10-11°C. Also, a polymerization inhibitor must be added. Our premium quality Styrene Monomer is shipped in chemical vessels (Type 2 of the International Maritime Organization Code). Our Styrene Monomer is also transferred via suitable road trucks arranged by us or by customers.


PYROLYSIS GASOLINE (PYGAS)

DESCRIPTION

Pyrolysis gasoline. Pygas is a naphtha-range product with a high aromatics content used either for gasoline blending or as a feedstock for a BTX extraction unit. Pyrolysis gasoline is produced in an ethylene plant that processes naphtha, butane or gasoil.


BENZENE

DESCRIPTION

Benzene (cyclohexa-1, 3) is the basis of a group of hydrocarbons referred to as “aromatics”. It is a clear colorless liquid, with a characteristic aromatic smell. Benzene is produced worldwide in substantial quantities, and because it is very easy to transport by ship, it is traded internationally.

 

APPLICATIONS

Due to the potential hazards of this material, benzene is no longer used in appreciable quantity as a solvent and has not been used as an industrial solvent for decades. However, it is found in motor fuels and is used extensively as a chemical building block for the production of many important industrial compounds, such as:

  • ETHYLBENZENE & STYRENE: used to manufacture polystyrene plastics, engineering plastics, and synthetic rubber
  • CUMENE & PHENOL: used to make phenolic resins like epoxies, polycarbonate, and more
  • CYCLOHEXANE: used to make nylon products
  • NITROBENZENE & ANILINE: used to make dyes, polyurethanes, etc.
  • ALKYLBENZENE: used to make detergents
  • CHLOROBENZENES & OTHER INTERMEDIATES: used to produce pharmaceuticals, specialty chemicals, plastics, glazing materials, resins, dyes, and pesticides

Benzene has also found limited application in medicine for the treatment of certain blood disorders and in veterinary medicine as a disinfectant.

 

STORAGE AND HANDLING

Avoid contact with eyes, skin and clothing. Avoid inhaling vapor. Storage and transfer equipment should be adequately earthed and bonded to prevent the accumulation of static charges. The storage area should be well ventilated. Store away from sources of heat or ignition. Do not store in certain rubbers. Suitable storage materials are rust-free carbon steel or most normal metals used for construction.


PARAXYLENE (PX)

DESCRIPTION

Paraxylene (1.4-dimethylbenzene) is a colorless, flammable liquid that has a sweet odor. It is separated from the mixed xylene stream that results from the refining of petroleum.

 

APPLICATIONS

  • Around 98% of PX is consumed in the polyester chain
  • mainly in the production of fiber, film and polyethylene terephthalate (PET) bottle resins
  • via one of two intermediates – purified terephthalic acid(PTA) or dimethyl terephthalate (DMT)
  • A small amount of PX is used as a solvent and to produce di-paraxylene and herbicides
 

STORAGE AND HANDLING

Store in clearly labeled, tightly closed, containers in a cool, well ventilated place, away from strong oxidizing materials and heat and ignition sources. During transferring operations, use electrically ground and bond metal containers. To reduce potential health hazards, use sufficient dilution or local exhaust ventilation to control airborne contaminants and to maintain concentrations at the lowest practical level. Use hermetically sealed equipment, transfer xylene in enclosed systems, avoid processes associated with open evaporating surfaces, and provide sources of gas release with enclosures and local exhaust ventilation.


PURIFIED TEREPHTHALIC ACID (PTA)

DESCRIPTION

A white crystalline powder with a slight acidic odor. It is mildly irritating to the eyes, skin and respiratory tract.

 

APPLICATIONS

  • PTA is mainly used in the production of polyester products
  • including polyethylene terephthalate (PET)
  • follows reaction with glycol
  • reagent for alkali in wool and an additive to poultry feeds

STORAGE AND HANDLING

Multiply paper bag with sealed plastic liner or heavy gauge plastic bag.Check that all containers are clearly labeled and free from leaks.

  • Big-bags of 1000kg (20MT per 20ft container)
  • Big-bags of 1100kg (22MT per 20ft container)
  • Bulk container (up to 25MT per 20ft container)