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Toxicity classification criteria

The only difficulty in this method (in addition to the calculations, which are easily carried out using computers) is the fact that it is impossible to analyse tables with values that are missing, so there is a need to choose substances for which there are a whole range of LC and LD values. Since this is impossible, three tables were used, which all have in common the L050 variables for rat and mouse, orally and by intraperitoneal means of penetration, so that the coherence of the three tables and a strong enough relationship between them could be ablished. The purpose was to determine, if, in the absence of one of the classification criteria set by regulation, it was possible to choose another available criterion to determine the risk level of toxicity. [Pg.136]

A 2011 study by Lithner et al. (2011) assessed the environmental and health hazards posed by plastics, based on the toxicity of their monomers. The classification is not inherent to the polymer as it is based primarily on residual monomer (with selected additives, plasticizer, and flame retardants). The ranking (see Table 8.8) can have relevance only for occupational exposures and in some food-contact uses of plastics. Also, future advances in residual monomer reduction technology and green substitution of additives can change the status of a polymer in this assessment. Where recyclabihty" is used as a ranking criterion, it generally refers to technical recyclabihty that has little to do with if the resin will in fact be recycled in practice. [Pg.246]


See other pages where Toxicity classification criteria is mentioned: [Pg.509]    [Pg.294]    [Pg.438]    [Pg.438]    [Pg.64]    [Pg.283]    [Pg.225]    [Pg.1157]   
See also in sourсe #XX -- [ Pg.317 ]

See also in sourсe #XX -- [ Pg.132 ]

See also in sourсe #XX -- [ Pg.317 ]

See also in sourсe #XX -- [ Pg.317 ]




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