Quality Indices for Water Bottle-grade PET Chips
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Item
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Unit
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Index
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I.V.
|
dL/g
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0.80±0.02
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|
Crystallinity
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%
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≤60
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|
Color value
|
L
|
–
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≥83
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b
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–
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≤1.0
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Content of COOH
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mol/t
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≤25
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Content of acetaldehyde
|
ppm
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≤1.0
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Dust content
|
ppm
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≤100
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Melting point
|
°C
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243±2
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Wt. of 100 chips
|
g
|
1.55±0.10
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