ASTM D5991-96(2002)
Historical Standard: ASTM D5991-96(2002) Standard Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Ethylene Terephthalate) (PET) Flake
SUPERSEDED (see Active link, below)
ASTM D5991
1. 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 1Although 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 suggest a 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 fluorescence 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 235C.
1.4 Procedures C and D are dye tests based on differential staining of PVC and PET.
Note 2Other 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 3There is no equivalent ISO standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1600 Terminology for Abbreviated Terms Relating to Plastics
D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products
Keywords
contamination; poly(ethylene terephthalate) (PET); poly(vinyl chloride) (PVC); recycled plastics; Contamination--plastics; Identification; PET (poly(ethylene terephthalate)); Poly(vinyl chloride)(PVC); Recycled plastics;
ICS Code
ICS Number Code 83.080.10 (Thermosetting materials)
DOI: 10.1520/D5991-96R02
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