Assertion: carbon black | /r/HasProperty | manufactured by the channel process
Facets:
Source sentences:
text: Historically, carbon black manufactured by the channel process has been understood to be relatively free of harmful impurities compared with the potential level of impurities, such as PAHs, that might be introduced when the black is manufactured by alternative processes, particularly by the furnace process.
text: Despite the absence of any specifications or other limitations applicable to the clearance for carbon black manufactured by the channel process, the good manufacturing practices (GMP) requirements applicable to food contact materials and set forth in Section 174.5 of the regulations state that all packaging materials must be "of a purity suitable for [their] intended use.
text: Thus, even if the carbon black used in your polyethylene is manufactured by the channel process and thereby cleared under the listing in Section 178.3297, the colorant still must be considered suitably pure with respect to the presence of PAH impurities to be considered compliant with FDA's food additive regulations.