accurate and stable detection of p-phenylenediamine
- Classification:Chemical Auxiliary Agent
- Purity:98.9%
- Type:Anti-aging agent
- Appearance:Dark brown to dark violet pastilles
- Flash point:204°C
- Application:Rubber goods/plastic/shoes/tyre
- Storage:Dry and Cooling Place
- Package:1000kgs/ pallet with film
Rubber Antioxidant 6PPD Antioxidant 4020 CAS 793-24-8,this study comprehensively characterized the occurrence of 9 ppds in human urine from 151 chinese adults. our results showed that all target ppds were detected in human urine samples, with the total concentrations of ppds ranging from 0.41 to 38 ng/ml.
in this study, we developed a stable, rapid, and sensitive analytical method combining salt-out-assisted extraction, antioxidant protection, and m-pfc clean-up to determine ppds and their tps (6ppd, ippd, 6ppd, ippdq, 4-adpa, 4-hdpa, and 4-ndpa) in aquatic products.
widely used chemical rubber antioxidant ippd
N-Isopropyl-N'-phenyl-p-phenylenediamine (often abbreviated ippd) is an organic compound commonly used as an antiozonant in rubbers. like other p-phenylenediamine -based antiozonants it works by virtue of its low ionization energy, which allows it to react with ozone faster than ozone will react with rubber. [2]
chemical composition, bioactive compounds, and antioxidant,the present study aimed to investigate the chemical composition, bioactive compounds, and antioxidant activity of two wild edible mushrooms, the honey fungus (armillaria mellea) and the parasol mushroom (macrolepiota procera), collected from northern morocco (ma) and portugal (pt). those species were chosen due to their edibility, nutraceutical
improvements of lanthanum complex on the thermal-oxidative
mixed antioxidants composed of antioxidant ippd and novel rare earth lanthanum complex were used as an additive to prepare natural rubber (nr) samples.
the effect of antioxidant concentration of n-isopropyl-n,the purpose of this study is to compare the effect of anti-oxidants types ippd and tmq and mixing time of vulcanization of the physical properties, mechanical properties, microstructure and elemental composition of the synthesis of natural rubber compound.
influence of geographic origin and plant source on
other reports showed that moroccan propolis has a strong antioxidant, antibacterial, anti-inflammatory, and anticancer potential [ 20 24 ].
new evidence of rubber-derived quinones in water, air for sale,among the identified quinones, n (1,3-dimethylbutyl)- n ′-phenyl- p -phenylenediamine quinone has been recently found to be highly toxic, causing acute mortality of coho salmon in the pacific northwest.
physicochemical characterization and in vitro evaluation of
two ethanolic extracts of moroccan propolis from the fez-meknes region were evaluated regarding the following physicochemical parameters: yield, ph, total carbohydrates, total proteins, total lipids, minerals, total phenolic content, total flavonoid content, and antioxidant activity using ferric reducing antioxidant power (frap) and 2,2’-azino-b...
on the dehydrogenation of n,n′-substituted p-phenylenediamine,the commercial product dusantox ippd (duslo šala, slovak republic) was purified by crystallization from toluene solution. transmission mid-infrared spectra (4000–400 cm −1) at room temperature were collected by nicolet model nexus 470 ftir spectrometer using standard kbr technique.
- Are 6PPD and IPPD a contaminant?
- 6PPD and IPPD were detected in white shrimp samples collected from aquafarms. Given the high toxicity of N- (1,3-dimethylbutyl)-N’-phenyl- p -phenylenediamine (6PPD) derivatives, such as 6PPD quinone (6PPDQ) to salmon, as well as their ubiquitous presence in the environment, the contaminant of aquatic food products has drawn significant attention.
- Can antioxidant protection be used to detect PPDS and TPS?
- An efficient and stable method for the detection of PPDs and their TPs was developed. Oxidative degradation is the main cause of low extraction efficiency of PPDs and some TPs. Combined strong antioxidant protection for stable extraction PPDs and their TPs was first proposed.
- Do rubber-derived Quinones form from PPD antioxidants?
- Herein, we developed and implemented a mass spectrometry-based platform combined with self-synthesized standards for the investigation of rubber-derived quinones formed from PPD antioxidants. Our results demonstrated that five quinones are ubiquitously present in urban runoff, roadside soils, and air particles.
- Is MBZ 445 a good antioxidant for EPDM?
- In the thermal-aging testing, the retention of elongation at break for the rubber sample with combined antioxidants (MBZ:445=2:1) is superior to that of other samples (Fig. 2 c), demonstrating the synergistic antioxidative effects between MBZ and 445 for EPDM.
