Dow 722 Linear Low Density Polyethylene (LDPE)

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Dow 722 Linear Low Density Polyethylene (LDPE)
Categories:	Polymer; Thermoplastic; Polyethylene (PE); Linear Low Density (LLDPE)
Material Notes:	DOW Polyethylene 722 is a broad molecular weight distribution homopolymer designed to offer good impact strength and rack resistance, with excellent flexibility. Typical applications include caps/closures. It complies with U.S. FDA 21 CFR 177.1520 (c) 2.1. Information provided by Dow
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Physical Properties	Metric	English	Comments

Density	0.918 g/cc	0.0332 lb/in³	ASTM D792
ESCR 100% Igepal®	<= 1.0 hour @Temperature 50.0 °C	<= 1.0 hour @Temperature 122 °F	F₅₀; Molded and tested in accordance with ASTM D4976; ASTM D1693
Melt Index of Compound	8.0 g/10 min @Load 2.16 kg, Temperature 190 °C	8.0 g/10 min @Load 4.76 lb, Temperature 374 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	43	43	Molded and tested in accordance with ASTM D4976; ASTM D2240
Tensile Strength at Break	9.65 MPa	1400 psi	Molded and tested in accordance with ASTM D4976; ASTM D638
Tensile Strength, Yield	8.27 MPa	1200 psi	Molded and tested in accordance with ASTM D4976; ASTM D638
Elongation at Break	500 %	500 %	Molded and tested in accordance with ASTM D4976; ASTM D638
Elongation at Yield	4.0 %	4.0 %	Molded and tested in accordance with ASTM D4976; ASTM D638
Flexural Modulus	0.234 GPa @Strain 2 %	34.0 ksi @Strain 2 %	Secant; Molded and tested per ASTM D4976; ASTM D790 B
Tensile Impact Strength	273 kJ/m²	130 ft-lb/in²	Molded and tested in accordance with ASTM D4976; ASTM D1822, Type S

Thermal Properties	Metric	English	Comments
Melting Point	107 °C	224 °F	Dow Method (DSC)
Crystallization Temperature	95.0 °C	203 °F	Dow Method (DSC)
Deflection Temperature at 0.46 MPa (66 psi)	37.2 °C	99.0 °F	Molded and tested in accordance with ASTM D4976; ASTM D648
Vicat Softening Point	87.8 °C	190 °F	ASTM D1525
Brittleness Temperature	-60.0 °C	-76.0 °F	Molded and tested in accordance with ASTM D4976; ASTM D746

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes	See notes for details.

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PDOW1223 / 30441

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