Linear low-density polyethylene (LLDPE)

Linear low-density polyethylene (LLDPE) is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly made by copolymerization of ethylene with longer-chain olefins.LLDPE has penetrated almost all traditional markets for polyethylene; it is used for plastic bags and sheets, plastic wrap, stretch wrap, pouches, toys, covers, lids, pipes, buckets and containers, covering of cables, geomembranes,and mainly flexible tubing.

  • Chemical Formula :   –(CH2-CH2)n–
  • Melt Temperature :   122°C (251°F)
  • Properties:
  • 1. Lower thickness than comparable LDPE
  • 2. Very flexible and elongates under stress
  • 3. Better environmental stress cracking resistance
  • 4. Good electrical properties

Technical Data Sheet(TDS)

Main Specification:

LLDPE Film Grade

Items Test Method Test results
Melt index, g/10min ASTM D 1238 1.0
Density, g/cm3 ASTM D 1505 0.918
Tensile Strength
at Yield, kg/cm2
--- Machine Direction
--- Transverse Direction
ASTM D 882

130
120
Tensile Strength
at Break, kg/cm2
--- Machine Direction
--- Transverse Direction
ASTM D 882

410
320
Ultimate Elongation, %
--- Machine Direction
--- Transverse Direction
ASTM D 882
550
700
Tensile Tear Strength, kg/cm
--- Machine Direction
--- Transverse Direction
ASTM D 1004
110
100
Dart Drop Impact Strength, kg/s2 ASTM D 1709 100
Haze, % ASTM D 1003 10
Heat Seal Range 130-220

Material Safety Data Sheet(MSDS)

SECTION 1 - CHEMICAL PRODUCT

Chemical Name & Synonyms: Liner Low Density Polyethylene (LLDPE)

Chemical Family: Polyolefin

C.A.S. No.: 9002-88-4

Formula:(-CH2 –CH2 -) n

SECTION 2 - COMPOSITION / INFORMATION ON INGREDIENTS
Paints Preservatives
Metallic & Solvents
% TLV (Units) Alloys & Coatings % TLV (Units)
Pigments Nil NA Base Metal Nil NA
Catalyst <0.01 NA Alloys Nil NA
Vehicle Nil NA Metallic Coatings Nil NA
Solvents Nil NA Filler Metal plus coating
or core flux
Nil NA
Additives <1 NA Others Hazardous Mixture of
other liquids, solids or gases
Nil NA
SECTION 3 - HAZARDS IDENTIFICATION

Potential Health Effects:

Eyes:Contact of powder or fines with eye may cause mechanical irritation. Contact with hot or molten material may cause severe injury, including in extreme contact, possible blindness.

Skin:Contact of powder or fines with skin may cause mild to more serious irritation that is increased by mechanical rubbing or if skin is dry. Contact with hot or molten material may cause severe thermal burns.

Ingestion:Ingestion of this product is unlikely. However, ingestion of the product may produce mild gastrointestinal irritation and disturbances.

Inhalation:Inhalation of fine particles may cause respiratory & eye irritation. Negligible hazards at ambient temperatures (-18oC to +50oC)

Environmental Hazards:Polyethylene is an essentially biologically inert solid and considered non-toxic. It is stable (does not decompose) in landfills or in aquatic systems.

SECTION 4 - FIRST AID MEASURES

Skin Contact:If molten material contacts the skin, immediately flush with large amounts of water to cool the affected tissues and polymer. Do not attempt to peel the polymer from skin. Obtain immediately emergency medical attention if burn is deep or extensive.

Eye Contact:Flush eyes thoroughly with water for several minutes and seek medical attention if discomfort persists.

Inhalation:If symptoms are experienced, move victim to fresh air. Obtain medical attention if breathing difficulty persists.

Ingestion:Adverse health effects due to ingestion are not anticipated.

SECTION 5 - FIRE FIGHTING MEASURES

Flash Ignition Temperature:335°C

Auto Ignition Temperature:350°C

Flammable LimitsNA

Suitable Extinguishing Media:Water, Foam, Carbon Dioxide, Dry Chemical Powder

For Safety reasons, unsuitable extinguishing media:None

Protective Equipment:: Respiratory & Eye protection for fire fighting personnel

SECTION 6 - ACCIDENTAL RELEASE MEASURES

Spill and Leak procedure:: Sweep up spilled material for use or disposal. Good house keeping must be maintained to avoid potential slipping problem.

Caution:Keep walking surface free of spilled material to avoid slipping hazard.

SECTION 7 - STORAGE AND HANDLING

Information for safe handling:
No special requirements necessary, if handled at room temperature.
Avoid spilling the product, as this might cause falls.
Potential toxic/irritating fumes may be evolved from heated material.
Provide appropriate ventilation for such processing conditions.
Take precautionary measures against explosion risks, as all types of polymers may develop dust during transporting or grinding of granules.

Requirements to be met by storerooms and containers:
This product may react with strong oxidizing agents & should not be stored near such materials.
Store the bags in areas protected with automatic sprinklers.
Storage temperature should be below 60°C.
Do not smoke.
Take precautionary measures to prevent the formation of static electricity.
Ground equipment electrically.
Electric safety equipment.
Open flames prohibited.
Store the product in bags, car silos, container, or large cartons.

Information about storage in one common storage facility:
Not required.

Further information about storage conditions:
Protect from heat and direct sunlight.
Store under dry conditions.

Specific applications:
For safe stacking follow the storage recommendations specific for this product

SECTION 8 - EXPOSURE CONTROLS / PERSONAL PROTECTION

ENGINEERING CONTROLS:Use in a well-ventilated area. If handling results in dust generation, special ventilation may be needed to minimize dust exposure. If heated material generates vapour or fumes, use process enclosures, local exhaust ventilation, or other engineering controls to control exposure.

PERSONAL PROTECTIVE EQUIPMENT:

Respiratory system:
Product processing, heat sealing of film or operations involving the use of wires or blades heated above 300°C may produce dust, vapour or fumes . To minimize risk of over exposure to dust, vapour or fumes it is recommended that a local exhaust system is placed above the equipment, and that the working area is properly ventilated. If ventilation is inadequate, use certified respirator that will protect against dust/mist.

Skin and body:
Hot material: Wear heat-resistant protective gloves, clothing and face shield able to withstand the temperature of the molten product. Cold material: None required; however, use of gloves is good industrial practice

Hand:
Hot material: Wear heat-resistant protective gloves able to withstand the temperature of the molten product. Cold material: None required; however, use of gloves is good industrial practice. The correct choice of protective gloves depends upon the chemicals being handled, the conditions of work and use, and the condition of the gloves (even the best chemically resistant glove will break down after repeated chemical exposures). Most gloves provide only short time of protection before they must be discarded and replaced. Because specific work environments and material handling practices very, Safety procedures should be developed for each intended application. Gloves should therefore be chosen in consultation with the supplier/manufacturer and with a full assessment of the working conditions.

Eyes:
Safety glasses with side shields. Use dust goggles if high dust concentration is generated.

SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE : Pellets

ODOUR : Slight waxy odour

COLOR : Clear

FREEZING POINT : Not Applicable

MELTING POINT : 115 – 130 °C

BOILING POINT : Not Applicable.

FLASH POINT : Not Applicable.

DENSITY : 0.915-0.939 g/cm3

SPECIFIC GRAVITY : Not Applicable.

AUTOIGNITION TEMPERATURE:: Not Applicable

EXPLOSIVE PROPERTIES :High dust concentrations have a potential for Combustion or explosion

PERCENT VOLATILE : Not Applicable.

VAPOR PRESSURE : Not Applicable.

SECTION 10 - STABILITY AND REACTIVITY

Chemical stability:
This product is stable under normal use conditions for shock, vibration, pressure or temperature.

Chemical stability - Condition to Avoid:
Avoid strong oxidizing agents. Avoid Processing Material over 300°C

Incompatibility:
May react with strong oxidizing agents. Organic solvents, ether, gasoline, lubricating oils, chlorinated hydrocarbons and aromatic hydrocarbons may react with and degrade polyethylene. Powders or dusts may form explosive mixture with air. Risk of dust-air explosion is increased if flammable vapours are also present.

Hazardous Polymerization:
Not likely to occur

Corrosivity:
Product is not corrosive

Hazardous Decomposition:
Upon heating, polyethylene may emit various oligomers, waxes and oxygenated hydrocarbons as well as corbon dioxide, carbon monoxide and small amounts of other organic vapours (eg. Aldehydes, acrolein). Inhalation of these decomposition products may be hazardous.

SECTION 11 - TOXICOLOGICAL INFORMATION

Ecotoxicity:Not toxic under normal conditions.

Persistence:Non-biodegradable

Chemical:Polyethylene

Toxicity Data:No toxicology data available.

SECTION 12 - ECOLOGICAL INFORMATION

Polyethylene is an essentially biologically inert solid and considered non-toxic. It is stable (does not decompose) in land fills or in aquatic systems. If released into water courses, most polyethylene pellets float.

SECTION 13 - DISPOSAL CONSIDERATIONS

Use material for its intended purpose or recycle if possible.
Waste disposal method: Landfill or incineration.

SECTION 14 - TRANSPORT INFORMATION

Not regulated as a dangerous goods for transportation.

SECTION 15 - REGULATORY INFORMATION

LLDPE manufactured by IOCL shall meets the requirements stipulated in IS 10146-1982 on, ‘Specification for Polyethylene and its copolymers for safe use in contact with foodstuff, pharmaceuticals and drinking water’.
Additives incorporated in this grade would conform to the positive list of constituents as prescribed in IS 10141-1982.
The product and the additives incorporated in it also comply with the FDA: CFR Title 21, 177.1520 Olefin Polymer