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  • ASTM
    D5991-96 Standard Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Ethylene Terephthalate) (PET) Flake
    Edition: 1996
    $91.10
    Unlimited Users per year

Description of ASTM-D5991 1996

ASTM D5991-96

Historical Standard: Standard Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Ethylene Terephthalate) (PET) Flake




ASTM D5991

Scope

1.1 This practice covers four procedures for separation and qualitative identification of poly(vinyl chloride) (PVC) contamination in poly(ethylene terephthalate) (PET) flakes.

Note 1- Although not presented as a quantitative method, procedures presented in this practice may be used to provide quantitative results at the discretion of the user. The user assumes the responsibility to verify the reproducibility of quantitative results. Data from an independent source suggesta PVC detection level of 200 ppm (w/w) based on an original sample weight of 454 g.

1.2 Procedure A is based on different fluoroescence of PVC and PET when these polymers are exposed to ultraviolet (UV) light.

1.3 Procedure B is an oven test based upon the charring of PVC when it is heated in air at 235 degrees C.

1.4 Procedures C and D are dye tests based on differential staining of PVC and PET.

Note 2- Other polymers (for example PETG) also absorb the stain or brightener. Such interferences will result in false positive identification of PVC as the contaminant.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section 8.

Note 3- There is no equivalent ISO standard.


Keywords

contamination; poly(ethylene terephthalate) (PET); poly(vinyl chloride) (PVC); recycled plastics


ICS Code

ICS Number Code n/a


DOI: 10.1520/D5991-96

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