environmental fate of tire-rubber related pollutants 6ppd
- Classification:Chemical Auxiliary Agent
- Purity:96.0% MIN
- Type:Rubber additive antioxidant
- Appearance:Dark brown, dark violet pellet
- MOQ:1MT
- Application:tires,rubber shoes and other rubber products
- Storage:Cool Dry Place
- Package:25 kg/bag,1000 kg/bag,customized packaging
q a: stage 1 alternatives analysis for 6ppd in tires,6ppd has been widely studied and used in tires as a highly effective antidegradant since the 1960’s. the recent concern regarding 6ppd in tires relates to a newly identified transformation product, 6ppd, and its potential impacts to certain salmonids.
To improve tire durability, the antioxidant n-(1,3-dimethylbutyl)-n-phenyl-p-phenylenediamine (6PPD) is used in rubber, but when exposed to oxidants such as ozone (O3), it is converted into toxic 6PPD quinone (6PPD-Q), causing ecological problems.
transformation products of tire rubber antioxidant 6ppd for sale
6ppd reactions with ozone generate numerous ubiquitous and potentially bioactive transformation products that can be detected in tire rubber particles and roadway environments.
rubber anti-aging agent antioxidant 6PPD (4020) supplier,6ppd is an organic chemical widely used as stabilising additive (or antidegradant) in rubbers, such as nr, sbr and br; all of which are common in vehicle tires. although it is an effective antioxidant it is primarily used because of its excellent antiozonant performance.
chemical characteristics, leaching, and stability of the
these measured physicochemical properties suggest that 6ppd is generally poorly soluble but fairly stable over short time periods in simple aqueous systems. 6ppd can also leach readily from twps for subsequent environmental transport, posing high potential for adverse effects in local aquatic environments.
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.
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 profiles, hazard identification for sale,however, the environmental consequences of waste generated during rubber product use, particularly the formation of 6ppd-quinone (6ppd-q) through the reaction of 6ppd with ozone, have raised significant concerns due to their detrimental effects on ecosystems.
hutchinson researching 6ppd replacement options european
there are many parameters to consider when seeking to substitute 6ppd, not least type of degradation oxidation, ozone, fatigue, or a combination of these the hutchinson presenter set out. a fundamental target here, she explained, is to match the effectiveness of 6ppd in trapping hydrocarbon peroxide radicals due to its high reactivity
what we know: 6ppd and 6ppd-quinone 6ppd.itrcweb.org,this focus sheet provides environmental officials with a brief overview of the current understanding of 6ppd-q sources, exposure, fate, transport, toxicity, and mitigation strategies. in-depth itrc guidance will be released in summer 2024. in 2020, researchers in washington state discovered and identified 6ppd-quinone (6ppd-q) as the stormwater
- Does 6PPD ozonation pose environmental risks?
- 6PPD, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (TP), 6PPD-quinone (6PPDQ), during exposure to gas-phase ozone. Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation.
- Are there alternatives to 6PPD as a rubber antioxidant?
- Nevertheless, conclusive studies identifying superior alternatives to 6PPD as a rubber antioxidant remain scarce in the current literature. Urbanization has resulted in an increase in surface runoff, a phenomenon that plays a pivotal role in the transportation of chemicals originating from tire wear into aquatic environments.
- What causes 6ppd-q in soil and tire rubber wear particles (TRWPS)?
- There is a linkage between 6PPD-Q in soil and tire rubber wear particles (TRWPs), indicating its origin from sources associated with vehicular activities (Klockner et al., 2019). Approximately 50% of TRWPs can infiltrate the soil, releasing bound chemicals like 6PPD (Klockner et al., 2019).
- Is 6PPD toxic to Daphnia pulex?
- The primary lethal substances present in pollutants from road runoff and leachates of TRWPs are 6PPD and 6PPD-Q, which have been found to be highly toxic to Daphnia pulex, a species of freshwater animal (Li et al., 2023a). Exposure to concentrations of 138 μg/L of 6PPD and 46 μg/L of 6PPD-Q for 48 h resulted in 100 % mortality in Daphnia pulex.
