supply Rubber Antioxidant 6PPD CAS No.: 793-24-8
- Classification:Chemical Auxiliary Agent
- Purity:96%
- Type:Anti-aging agent
- Appearance:Gray Purple or Purple Brown
- Ash Content:0.20%
- Application:tyres, motorcycles births
- Production Capacity:100 Metric Ton/Metric Tons per Month
- Package:25kg plastic woven bag
chemical 6ppd antioxidant chemical induces acute,the compound, called 6ppd-quinone, is an oxidation product of an additive intended to prevent damage to tire rubber from ozone. measurements from road runoff and immediate receiving waters show concentrations of 6ppd-quinone high enough to account for the acute toxicity events.
we demonstrate the catalytic upgrade of 6ppd to safe chemicals and the valorization of crumb rubber to aromatics and carbon black using microwave-assisted pyrolysis.
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 profiles, hazard identification for sale,initially, 6ppd undergoes ozonation, resulting in the production of benzoquinone imine, also known as n- (4- (1,3-dimethylbutyl)imino)-2,5-cyclohexadiene-1-ylidene (6ppdi). however, 6ppdi is unstable and reacts with ozone to form 6ppdi-oh.
first grade quality 6ppd rubber antioxidant
recently, roadway releases of N-(1,3-dimethyl-buty)-N'-phenyl-P-Phenylenediamine (ppd) antioxidants and their transformation products (tps) received significant attention due to the highly toxic 6ppd-quinone. however, the occurrence of ppds and tps in recycled tire rubber products remains uncharacterized.
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.
tire-rubber related pollutant 6-ppd quinone: a review of its
the antioxidant 6-ppd has been widely used to prevent cracking and thermal oxidative degradation and to extend the service life of tire rubber. 6-ppd quinone (6-ppdq) is formed via the reaction of 6-ppd with o 3. due to its acute lethality in coho salmon, 6-ppdq has become an emerging pollutant of increasing concern.
transformation products of tire rubber antioxidant 6ppd for sale,abstract: 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.
a review of n-(1,3-dimethylbutyl)-n prime;-phenyl-p- mdpi
as an antioxidant and antiozonant, n (1,3-dimethylbutyl)- n ′-phenyl- p -phenylenediamine (6ppd) is predominantly used in the rubber industry to prevent degradation.
rubber antioxidants and their transformation products,amine antioxidants are the main rubber antioxidants produced and used in china, of which 6ppd and 2,2,4-trimethyl-1,2-dihydroquinoline (tmq, rd) have the highest production, accounting for more than 80% of the total amine antioxidants.
- 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.
- How does microbial Fe (III) reduction affect the formation of 6ppd-q?
- In the initial aging stage, microbial Fe (III) reduction transforms 6-PPD into 6PPD-Q (Xu et al., 2023b). Subsequently, the formation of 6PPD-Q is facilitated by environmentally persistent free radicals (EPFRs), resulting in the generation of O 2 •-, indicating the potential formation of 6PPD-Q without ozone presence (Xu et al., 2023b).
- What are the data gaps in 6PPD ozonation?
- Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation. To address these data gaps, gas-phase ozonation of 6PPD was conducted over 24–168 h and ozonation TPs were characterized using high-resolution mass spectrometry.
- 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.
