• n,n'-diphenyl-p-phenylenediamine | c18h16n2

    N,N'-Diphenyl-p-phenylenediamine | C18H16N2

    N,N'-Diphenyl-p-phenylenediamine's production and use as an antioxidant in rubbers may result in its release to the environment through various waste streams. If released to air, a vapor pressure of 6.35X10-9 mm Hg at 25 °C indicates N,N'-diphenyl-p-phenylenediamine will exist solely in the particulate phase in the ambient atmosphere.

  • p-phenylenediamine system - rubber-chem.com

    P-phenylenediamine System - rubber-chem.com

    Rubber Antioxidant. Naphthylamine. Rubber Antioxidant D 135-88-6; Rubber Antioxidant A 90-30-2; Quinoline. Rubber Antioxidant TMQ 26780-96-1; Diphenylamine. Rubber Antioxidant ODPA 4175-37-5; Antioxidant BLE 68412-48-6; P-phenylenediamine System. Rubber Antioxidant 6PPD 793-24-8; Antioxidant IPPD 101-72-4; Phenols. Rubber Antioxidant BHT 128-37

  • p-phenylenediamine - wikipedia

    p-Phenylenediamine - Wikipedia

    p-Phenylenediamine (PPD) is an organic compound with the formula C 6 H 4 (NH 2) 2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. It is mainly used as a component of engineering polymers and composites like kevlar. It is also an ingredient in hair dyes and is occasionally used as a substitute for henna

  • ( n'-phenyl-p-phenylenediamine ) rubber antioxidant 6ppd (4020)

    ( N'-phenyl-p-phenylenediamine ) Rubber Antioxidant 6PPD (4020)

    Name: Rubber Antioxidant 6PPD(4020) Chemical Name: N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine Molecular Formula:C18H24N2 Molecular Weight: 268.40

  • skin sensitization potency and cross-reactivity of p

    Skin sensitization potency and cross-reactivity of p

    Background: p-Phenylenediamine (PPD)-related chemicals have been used as antioxidants in rubber products, and many cases of contact dermatitis caused by these chemicals have been reported. Objective: The aim of this study was to investigate relative sensitizing potency and cross-reactivity among PPD derivatives.

  • comparative study of p-phenylenediamine antioxidant

    Comparative study of p-phenylenediamine antioxidant

    Structures of six p-phenylenediamine (PPD) antioxidants were optimized and their NMR shifts were evaluated by B3LYP calculations.The dependences of experimental values of Antioxidant Effectiveness (AEX) and Molar Antioxidant Effectiveness (AEM) in styrene-butadiene (SBR) and polyisoprene (PIR) rubber on the calculated NMR chemical shifts of nitrogens, tertiary carbons and hydrogens bonded to

  • china rubber antioxidant 6ppd 793-24-8 manufacturer

    China Rubber Antioxidant 6PPD 793-24-8 Manufacturer

    Rubber Antioxidant. Naphthylamine. Rubber Antioxidant D 135-88-6; Rubber Antioxidant A 90-30-2; Quinoline. Rubber Antioxidant TMQ 26780-96-1; Diphenylamine. Rubber Antioxidant ODPA 4175-37-5; Antioxidant BLE 68412-48-6; P-phenylenediamine System. Rubber Antioxidant 6PPD 793-24-8; Antioxidant IPPD 101-72-4; Phenols. Rubber Antioxidant BHT 128-37

  • p-phenylenediamine - us epa

    p-Phenylenediamine - US EPA

    p-Phenylenediamine is primarily used as a dye intermediate and as a dye (e.g., hair dyes and dyes used for dyeing furs), as well as a photographic developing agent and a chemical intermediate. p-Phenylenediamine is also used as a vulcanization accelerator and as an antioxidant in rubber compounds. (2,4,8) Sources and Potential Exposure

  • rapid analysis of p-phenylenediamine antioxidants in rubber

    Rapid Analysis of p-Phenylenediamine Antioxidants in Rubber

    Rapid Analysis of p-Phenylenediamine Antioxidants in Rubber Figure 1. DART mass spectrum of a rubber particle from a mountain bike tire. Table I.. Elemental compositions for p-phenylenediamine antiozonants in a rubber tire. Introduction p-Phenylenediamine (PPD) and derivative compounds are commonly used as antioxidants and antiozonants in black

  • determination of p-phenylenediamine and related antioxidants

    Determination of p-Phenylenediamine and Related Antioxidants

    Althouh p-phenylenediamine (PPD) and related compounds have been used as antioxidants in rubber products, they commonly display sensitizing properties and have been associated with contact dermatitis.

  • rubber - common contact allergens - wiley online library

    Rubber - Common Contact Allergens - Wiley Online Library

    N‐isopropyl‐N'‐phenyl‐p‐phenylenediamine (IPPD) is an antioxidant used in rubber production to reduce the effects of perishing by atmospheric oxygen. The prevalence of rubber contact allergy is equiv...

  • antioxidant efficiency of p-phenylenediamines in natural

    Antioxidant Efficiency of p-Phenylenediamines in Natural

    The oxidation products formed exhibited antioxidant activity, those of N-isopropyl-N′-phenyl-p-phenylenediamine being particularly effective. This content is only available as a PDF. Rubber Division, American Chemical Society, Inc.