transformation products of tire rubber antioxidant 6ppd for sale
- Classification:Chemical Auxiliary Agent
- Purity:98.9%
- Type:Rubber antioxidant
- Appearance:Dark brown to dark violet pastilles
- Water Solubility:Insoluble in Water
- Application:rubber shoes and other rubber products
- Production Capacity:50000000t/Year
- Package:25 kg plastic woven bag
effects of 6ppd rubber antioxidant revealed,n-(1,3-dimethyl butyl)-n′-phenyl-phenylenediamine-quinone (6ppd-q) is a derivative of the widely used rubber tire antioxidant 6ppd, which was first found to be acutely toxic to coho salmon. subsequent studies showed that 6ppd-q had species-specific acute toxicity in fishes and potential hepatotoxicity in mice.
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.
untargeted metabolomic analysis reveals a time-course hepatic
the tire antioxidant 6ppd has garnered extensive attention due to its widespread presence in the environment and the harmful effects of its transformation products on aquatic organisms. 6ppd has been detected in airborne dust, and it can enter mammals through inhalation exposure.
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.
curcuma longa-based green and sustainable antioxidants for sale
overall, the nr-pncs loaded with natural antioxidant curcumin exhibited improved oxidative resistance and viscoelastic performance compared to pncs made with 6ppd.
Best Price Rubber Antioxidant 6PPD CAS No.: 793-24-8,the tire antioxidant and antiozonant, 6ppd, is added to extend the polymer rubber lifetime. following environmental exposure, 6ppd transforms to its highly toxic quinone form n -...
ozone resistance of three natural antioxidants in solution
the results revealed that two natural antioxidants, namely sa and α-tocopherol, closely matched the performance of 6ppd and could be promising candidates for replacing p-phenylenediamine antioxidants as environmentally friendly antiozonants in the future.
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 tire industry perspective on 6ppd replacement: the challenge
to act like 6ppd, a drop-in substitute must: function as antiozonant and antioxidant to help prevent the degradation and cracking of rubber compounds (unsaturated elastomers) by protecting against ozone attack, oxidation, and heat aging.
new evidence of rubber-derived quinones in water, air for sale,in addn., a major ozonization product of n-(1,3-dimethylbutyl)-n'-phenyl-1,4-phenylenediamine (6ppd), 6ppd-qunione, was also identified in dust with levels (median range of 32.2-80.9 ng/g) comparable to that of 6ppd except in house dust.
- 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.
- Do substituted para phenylenediamine (PPD) antioxidants affect the environment?
- Substituted para -phenylenediamine (PPD) antioxidants have been extensively used to retard oxidative degradation of tire rubber and were found to pervade multiple environmental compartments. However, there is a paucity of research on the environmental occurrences of their transformation products.
- Is 6PPD recalcitrant under harsh pyrolysis?
- This demonstrates the recalcitrant nature of 6PPD under harsh pyrolysis conditions and suggests solvent extraction is necessary for its removal. The TGA curve (Supplementary Fig. 11) of 6PPD shows a maximum degradation at ~300 °C and suggests that some 6PPD in the tires may sublime into the liquid product before the rubber degrades.
- Is 6PPD a heterogeneous reaction?
- ... Recent evidence indicated the heterogeneous reaction of gas-phase ozone with the precursor of 6PPD-Q, a widely adopted tire rubber antioxidant named 6PPD, thus yielding a range of TPs including 6PPD-Q and others identified using high-resolution mass spectrometry (HRMS) .
