rubber antioxidant n n-diphenyl-p-phenylenediamine dppd antioxidant h

Jan - 19
2017

rubber antioxidant n n-diphenyl-p-phenylenediamine dppd antioxidant h

screening p-phenylenediamine antioxidants, their ...

Screening p-Phenylenediamine Antioxidants, Their ...

Recently, roadway releases of N, N ′-substituted p -phenylenediamine (PPD) antioxidants and their transformation products (TPs) received significant attention due to the highly toxic 6PPD-quinone.

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comparative study of p-phenylenediamine antioxidant ...

Comparative study of p-phenylenediamine antioxidant ...

Aromatic secondary amines, especially N-phenyl-N′-alkyl-p-phenylenediamines (PPD) are the most important commercial antioxidants used prevailingly in rubber industry [1, 2]. The most important reactive radical intermediates formed during degradative reactions are hydroxyl (HO•), alkoxyl (RO•) and peroxyl (ROO•) radicals which can ...

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beyond substituted p-phenylenediamine antioxidants ...

Beyond Substituted p-Phenylenediamine Antioxidants ...

N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) is the most widely used antioxidant in automobile tyres and many rubber products. We investigated the impact of 6PPD and 6PPD quinone on acute toxicity, morphol., swimming behavior, heart rate, and oxygen consumption in zebrafish larvae.

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screening p-phenylenediamine antioxidants, their ...

Screening p-Phenylenediamine Antioxidants, Their ...

Recently, roadway releases of N, N '-substituted 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.

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beyond substituted p-phenylenediamine antioxidants ...

Beyond Substituted p-Phenylenediamine Antioxidants ...

Substituted para-phenylenediamines (PPDs), as a class of anthropogenic antioxidants, have been largely produced and applied in the rubber industry due to their capability for the protection of rubber materials against flex cracking, heat degradation, and ozone cracking. 1 However, massive production and consumption of these PPD antioxidants ...

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an antioxidant, n,n′-diphenyl-p-phenylenediamine (dppd ...

An antioxidant, N,N′-diphenyl-p-phenylenediamine (DPPD ...

N,N′-diphenyl-p-phenylenediamine (DPPD; CAS: 74-31-7), a gray or dark gray powder, is used as a polymerization inhibitor and antioxidant (HSDB, 2012). The antioxidative activity of DPPD is implemented by the donation of a hydrogen to a radical derivative and breaking the autocatalytic cycle ( Chemicalland21, 2012 ).

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an antioxidant, n,n′-diphenyl-p-phenylenediamine (dppd ...

An antioxidant, N,N′-diphenyl-p-phenylenediamine (DPPD ...

The tire rubber antioxidant N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) mainly contributed to the TWP toxicity. The toxicity of TWP and 6PPD extracted varied with time in nature. Cladocerans and rotifers were more sensitive to TWP and 6PPD than copepods.

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dft study of the reaction sites of n,n′-substituted p ...

DFT study of the reaction sites of N,N′-substituted p ...

Based on FTIR spectra, some authors [2] suppose that the thermal aging of polyisoprene (PI) rubber with different concentrations of the antioxidant N-phenyl-N′-1,3-dimethyl-butyl-p-phenylenediamine (6PPD) in hot air (140 °C) leads to the existence of N-1,3-dimethylbutyl-N′-phenylquinonediimine.

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n, n-diphenyl-p-phenylenediamine|dppd antioxidant h|74-31-7

N, N-diphenyl-p-phenylenediamine|DPPD Antioxidant H|74-31-7

3. Application: Antioxidant H/DPPD can be used as the antioxidant in solid propellant to improve the storage stability of the product. It has been used for those natural, styrene-butadiene, acrylonitrile-butadiene, butadiene, butyl, hydroxyl, polyisoprene rubber to possess performance such as good flex life and crazing for enhancing the tensile modulus, strengthening the defending function to ...

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diphenyl-p-phenylenediamine | allergic contact dermatitis ...

Diphenyl-p-phenylenediamine | Allergic Contact Dermatitis ...

Where is Diphenyl-p-phenylenediamine found? This substance is used as an antioxidant and stabilizer for rubber and petroleum oils. It is also used as a retardant against copper degradation. It is found in dyes, drugs, plastics, and detergent additives.

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an antioxidant, n,n′-diphenyl-p-phenylenediamine (dppd ...

An antioxidant, N,N′-diphenyl-p-phenylenediamine (DPPD ...

Groups of 50 F344 rats of each sex were fed a diet containing 0.5 or 2% of N,N'-diphenyl-p-phenylenediamine (DPPD) for 104 weeks and were killed 8 weeks after the cessation of DPPD administration.

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n,n'-diphenyl-p-phenylenediamine (antioxidant dppd)

N,N'-DIPHENYL-P-PHENYLENEDIAMINE (ANTIOXIDANT DPPD)

N,N'-Diphenyl-p-phenylenediamine is used as an antioxidant and/or stabilizer for rubber, petroleum oils and feedstuffs. It is also used as a polymerization inhibitor and a retardant against copper degradation.It is a chemical intermediate to make dyes, drugs, plastics and detergent additives. Antioxidant is a substance added in small quantities ...

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n,n-diphenyl-p-phenylenediamine | 74-31-7 - chemicalbook

N,N-Diphenyl-p-phenylenediamine | 74-31-7 - ChemicalBook

N,N'-Diphenyl-4-phenylene diamine is an antioxidant for rubber, petroleum oils, and feed stuffs; stabilizer; a polymerization inhibitor; used to retard copper degradation; as an intermediate for dyes, drugs, plasties and detergents; antidegradant for nitrile-butadiene rubber, natural, styrene-butadiene, isoprene, butadiene, and ehloroprene rubbers.

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versatile dynamic dppd h rubber antioxidant - alibababa.com

Versatile Dynamic dppd h rubber antioxidant - Alibababa.com

Dppd H Rubber Antioxidant ... factory industrial auxiliary agent rubber polymer in solid propellant DPPD antioxidant h/N,N-diphenyl-p-phenylenediamine $32.00 - $36.00.

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new evidence of rubber-derived quinones in water, air, and ...

New Evidence of Rubber-Derived Quinones in Water, Air, and ...

A 28-day repeated dose toxicity test and reprodn./developmental toxicity test for N,N'-diphenyl-p-phenylenediamine (DPPD) were conducted in [Crl:CD(SD)] SPF rats. Male and female rats were dosed with DPPD by gavage for 28 days at 0, 100, 300, or 1000 mg/kg bw/day or for a total of 42-46 days at 0, 8, 50, or 300 mg/kg bw/day.

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1,4-benzenediamine, n,n'-diphenyl- - nist chemistry webbook

1,4-Benzenediamine, N,N'-diphenyl- - NIST Chemistry WebBook

Notes. Go To: Top Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment.

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inhibition of diquat-induced lipid peroxidation and toxicity ...

Inhibition of diquat-induced lipid peroxidation and toxicity ...

The ability of the novel antioxidants U-74,006F and U-78,517G and a known antioxidant (N,N'-diphenyl-p-phenylenediamine, (DPPD)) to inhibit chemically induced (diquat dibromide) oxidative stress was examined in precision-cut liver slices. Previous studies in rat liver microsomes demonstrated the abi …

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cas 74-31-7 products price,suppliers - guidechem chemical network

CAS 74-31-7 products price,suppliers - Guidechem Chemical Network

shanghai hohance chemical company Contact Supplier. N,N'-Diphenyl-1,4-phenylenediamine (DPPD) Description: Name: Diphenyl-p-phenylenediamine (Related Reference) EINECS: 200-806-4 Molecular Formula: C18H16N2 CAS Registry Number: 74-31-7 Synonyms: 1,4-Dianilinobenzene; 1,4-Bis (phenylamino) benzene; p-bis (phenylamino)benzene; p ...

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(pdf) beyond substituted p -phenylenediamine antioxidants ...

(PDF) Beyond Substituted p -Phenylenediamine Antioxidants ...

Substituted para-phenylenediamine (PPD) antioxidants have been extensively used to retard oxidative degradation of tire rubber and were found to pervade multiple environmental compartments.

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1,4-benzenediamine, n,n'-diphenyl- - nist chemistry webbook

1,4-Benzenediamine, N,N'-diphenyl- - NIST Chemistry WebBook

IUPAC Standard InChIKey: UTGQNNCQYDRXCH-UHFFFAOYSA-N Copy; CAS Registry Number: 74-31-7; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript.

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dft study of the reaction sites of n,n′-substituted p ...

DFT study of the reaction sites of N,N′-substituted p ...

Based on FTIR spectra, some authors [2] suppose that the thermal aging of polyisoprene (PI) rubber with different concentrations of the antioxidant N-phenyl-N′-1,3-dimethyl-butyl-p-phenylenediamine (6PPD) in hot air (140 °C) leads to the existence of N-1,3-dimethylbutyl-N′-phenylquinonediimine.

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(pdf) n,n′-diphenyl-1,4-phenylenediamine antioxidant’s ...

(PDF) N,N′-Diphenyl-1,4-phenylenediamine Antioxidant’s ...

Antioxidants N, N 0-diphenyl-1,4-phenylenediamine. Antioxidants 2023 , 12 , 58 3 of 15 Herein, as far as we know , the synthetic antioxidant DPPD (Figure 1 ) was used for

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patient information sheet n,n´-diphenyl-p-phenylenediamine (dppd)

PATIENT INFORMATION SHEET N,N´-Diphenyl-p-phenylenediamine (DPPD)

What else is N,N´-Diphenyl-p-phenylenediamine (DPPD) called? This chemical can be identified by different names, including: 1,4-Dianilinobenzene, Diafen, Nonox dppd, 1,4-Bis (phenyl amino) benzene, Diphenyl-p-phenylenediamine, Nonflex This may not be a complete list as manufacturers introduce and delete chemicals from their product lines.

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safety data sheet - spectrum chemical

SAFETY DATA SHEET - Spectrum Chemical

SAFETY DATA SHEET 1. IDENTIFICATION Product identifier Product code: D1634 Product Name: N,N-Diphenyl-1,4-phenylenediamine Other means of identification Synonyms: Nocrac DP; Nonflex H; Nonox DPPD; AgeRite DPPD; Altofane DIP; Antage DP;

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protective effect of dppd on mercury chloride-induced ...

Protective Effect of DPPD on Mercury Chloride-Induced ...

Mercury is a global environmental pollutant, accumulating mainly in the kidney and liver inducing hepatorenal toxicity, oxidative stress, and tissue damage. Oxidative stress is caused by an imbalance between free radicals’ production and cellular antioxidant defense systems. In the present study, we investigated the effect of N N′-diphenyl-1, 4-phenylenediamine (DPPD) antioxidant activity ...

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a variety of oxidation products of antioxidants based on n,n ...

A variety of oxidation products of antioxidants based on N,N ...

Recently, the antioxidant activity of six N,N′-substituted p-phenylenediamines in polyisoprene rubber matrix was studied by differential scanning calorimetry (DSC) indicating that (except DPPD) the antioxidant action in solid state is inversely proportional to the dissociation energy of the C–H bond at the aliphatic carbon atom bonded to ...

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brown powder dppd antioxidant h for rubber 74-31-7 china ...

brown powder dppd antioxidant h for rubber 74-31-7 china ...

Get Price rubber antioxidant 4010na ippd, rubber antioxidant 4010na brown powder DPPD Antioxidant H for rubber(74-31-7) China manufacturer US $32.00-$40.00 / Kilogram 1.0 Kilograms (Min. Order) Tanyun Junrong (Liaoning) Look for Diphenyl-p-phenylenediamine (cas 74-31-7) prices, manufacturers, suppliers, exporters start with Guidechem!Global ...

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the antioxidant activity of vitamin c, dppd and l-cysteine ...

The antioxidant activity of vitamin C, DPPD and L-cysteine ...

Oxidative stress has been proven to be involved in cisplatin (CP)-induced toxicity. The present study was designed to evaluate the antioxidant activity of Vit C, N,N'-diphenyl-p-phenylenediamine (DPPD) and L-cysteine against CP-induced testicular oxidative damage in rats. Our data indicated signific …

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1,4-benzenediamine, n,n'-diphenyl- - nist chemistry webbook

1,4-Benzenediamine, N,N'-diphenyl- - NIST Chemistry WebBook

IUPAC Standard InChIKey: UTGQNNCQYDRXCH-UHFFFAOYSA-N Copy; CAS Registry Number: 74-31-7; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript.

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top rated efficient rubber antioxidant h dppd at luring ...

Top Rated Efficient rubber antioxidant h dppd At Luring ...

Rubber Antioxidant H Dppd (108 products available) 1/6. Aminic Antioxidant Additives For Lubricating Oils Additives ST-57 Industrial Lubricating Oil CAS No.-46-1 ...

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1,4-benzenediamine, n,n'-diphenyl- - nist chemistry webbook

1,4-Benzenediamine, N,N'-diphenyl- - NIST Chemistry WebBook

Notes. Go To: Top Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment.

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on nmr prediction of the effectiveness of p-phenylenediamine ...

On NMR prediction of the effectiveness of p-phenylenediamine ...

NMR shifts of N-phenyl-N′-alkyl-p-phenylenediamines (PPD) in DMSO have been measured as well as evaluated by B3LYP calculations.According to Simon et al. Molar Antioxidant Effectiveness (AEM) of PPD antioxidants depends on the bond strength of hydrogens to amine nitrogens between aromatic rings (N A), to the side aliphatic chain nitrogens (N B) and to its neighboring tertiary carbon atoms (C T).

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diphenyl-p-phenylenediamine (dppd) | allergeaze contact ...

Diphenyl-p-phenylenediamine (DPPD) | allergEAZE Contact ...

This substance is used as an antioxidant and stabilizer for rubber and petroleum oils. It is also used as a retardant against copper degradation. It is found in dyes, drugs, plastics, and detergent additives. How can you avoid contact with this allergen? Avoid products that list any of the following names in the ingredients:

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antioxidant for textile - alibaba.com

Antioxidant For Textile - Alibaba.com

Industrial auxiliary agent rubber polymer in solid propellant DPPD antioxidant h/N,N-diphenyl-p-phenylenediamine $32.00 - $40.00. Min Order: 1.0 kilogram.

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rubber antioxidants n n-diphenyl-p-phenylenediamine 74-31-7 ...

rubber antioxidants n n-diphenyl-p-phenylenediamine 74-31-7 ...

N,N′-diphenyl-p-phenylenediamine (DPPD; CAS: 74-31-7), a gray or dark gray powder, is used as a polymerization inhibitor and antioxidant . The antioxidative activity of DPPD is implemented by the donation of a hydrogen to a radical derivative and breaking the autocatalytic cycle (Chemicalland21, 2012).

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n,n'-diphenyl-p-phenylenediamine - hazardous agents | haz-map

N,N'-Diphenyl-p-phenylenediamine - Hazardous Agents | Haz-Map

May cause skin sensitization; [ICSC] Danger of skin sensitization; [MAK] Food concentrations as low as 0.005% increase frequency of stillbirths in pregnant rats; Emergency treatment: "Paraphenylenediamine"; In sensitized individuals, paraphenylenediamine may cause allergic contact dermatitis following application as a hair dye and asthma ...

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tanyun factory supply antioxidant h/dppd/1010 for rubber mix ...

Tanyun Factory Supply Antioxidant H/dppd/1010 For Rubber Mix ...

Tanyun Factory Supply Antioxidant H/dppd/1010 For Rubber Mix With Antioxidant D , Find Complete Details about Tanyun Factory Supply Antioxidant H/dppd/1010 For Rubber Mix With Antioxidant D,Antioxidant D,Rubber,Antioxidant H from Electronics Chemicals Supplier or Manufacturer-Tanyun Aerospace Materials (yingkou) Technology Co., Ltd.

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top rated efficient antioxidant dppd at luring offers ...

Top Rated Efficient antioxidant dppd At Luring Offers ...

antioxidant/dppd used to possess performance such as good flex life and crazing for enhancing the tensile modulus $32.00 - $50.00. Min Order: 1.0 kilogram.

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