environmental fate of tire-rubber related pollutants 6ppd
- Classification:Chemical Auxiliary Agent
- Purity:96%
- Type:Rubber chemicals
- Appearance:Gray Purple or Purple Brown
- Density:1.08g/cm3
- Application:Used in Tires,Industrial Rubber Products
- Production Capacity:100 Metric Ton/Metric Tons per Month
- Package:25kg plastic woven bag
chemical characteristics, leaching, and stability of the,aqueous leaching simulations from tire tread wear particles (twps) indicated short term release of ∼5.2 μg 6ppd per gram twp over 6 h under flow-through conditions. aqueous stability tests observed a slight-to-moderate loss of 6ppd over 47 days (26 ± 3% loss) for ph 5, 7 and 9.
to enhance tire durability, the antioxidant n-(1,3-dimethylbutyl)N'-phenyl-p-phenylenediamine (6ppd) is used in rubber, but it converts into the toxic 6ppd quinone (6ppd-q) when exposed to oxidants like ozone (o 3), causing ecological concerns. this review synthesizes the existing data to assess the transformation, bioavailability, and
transformation products of tire rubber antioxidant 6ppd for sale
6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase ozone. important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of tps from 6ppd ozonation.
environmental impact of tire wear: the 6ppd-q Rubber Antioxidant,the 6ppd within the trwp is carried via stormwater and exposed to ozone, producing a by-product called 6ppd-quinone (6ppd-q). 6ppd-q is frequently transported directly to natural receiving waters and vulnerable aquatic ecosystems. impact on aquatic environments.
what we know: 6ppd and 6ppd-quinone 6ppd.itrcweb.org
both 6ppd and 6ppd-q surpass the threshold for very high acute aquatic toxicity using the globally harmonised system of classification and labeling of chemicals.18 this section focuses on 6ppd-q, which ranks as one of the most potent acute aquatic toxicants when compared to chemicals with existing clean water act2 aquatic life ambient water qual...
environmental profiles, hazard identification for sale,among the various ppd-q compounds identified in tire rubber granules (12 μg/g), rubber crumbles (0.3–25 μg/g), and recycled rubber door mats (11–26 μg/g), 6ppd-q stands out as the most prevalent (zhao et al., 2023b). research indicates that sunlight not only catalyzes the formation of 6ppd-q in trwps but also accelerates its breakdown.
tire anti-degradants (6ppd) team itrc itrc
tire anti-degradants are used to extend the life of tires by preventing the cracking and breakdown of rubber as it reacts with ozone over time. 6 p-phenylenediamine (6ppd) is currently the most prevalent chemical used for this purpose and is known to produce 6ppd-quinone (6ppd-q) through interaction with ozone. 6ppd and 6ppd-q enter the
environmental occurrence and toxicity of 6ppd quinone, an,n-(1,3-dimethylbutyl)N'-phenyl-p-phenylenediamine (6ppd) is a chemical added to tires to prevent their oxidative degradation. 6ppd is highly reactive with ozone and oxygen, leading to the formatio...
first report rubber auxiliary agent 6ppd
both 6ppd and 6ppd-q were detected in the urine samples, with detection frequencies between 60% and 100%. urinary 6ppd-q concentrations were significantly higher than those of 6ppd and correlated well with those of 6ppd ( p < 0.01), indicating coexposure to 6ppd and 6ppd-q in humans.
tire-rubber related pollutant 6-ppd quinone: a review of its,exposure to 6-ppdq at environmentally relevant concentrations could induce several types of toxicity, including neurotoxicity, intestinal toxicity, and reproductive toxicity. this review also identifies and discusses knowledge gaps and research needs for the study of 6-ppdq.
- Does 6ppdq occur during ozonation of 6qdi?
- Consistent with prior findings, 6PPDQ (C 18 H 22 N 2 O 2) was one of the major TPs in 6PPD ozonation (∼1 to 19% yield). Notably, 6PPDQ was not observed during ozonation of 6QDI ( N - (1,3-dimethylbutyl)- N ′-phenyl- p -quinonediimine), indicating that 6PPDQ formation does not proceed through 6QDI or associated 6QDI TPs.
- Can abiotic processes reprogramme the toxicity of 6ppd-q?
- Additionally, it was observed that during UV treatment, hydroxyl groups were detected in the transformation products of 6PPD-Q (Wang et al., 2024), indicating that abiotic processes can induce hydroxylation, potentially reprogramming its toxicity.
- Which PPD-Q compounds are found in tire rubber granules?
- Among the various PPD-Q compounds identified in tire rubber granules (12 μg/g), rubber crumbles (0.3–25 μg/g), and recycled rubber door mats (11–26 μg/g), 6PPD-Q stands out as the most prevalent (Zhao et al., 2023b). Research indicates that sunlight not only catalyzes the formation of 6PPD-Q in TRWPs but also accelerates its breakdown.
