World Journal of Applied Chemistry

Archive

Volume 4, Issue 1, March 2019

  • Application and Practice of Rubbing Fastness Improver DM-2589N

    Lv Xiaolan, Liao Huan, Chen Jianfang, Deng Donghai

    Issue: Volume 4, Issue 1, March 2019
    Pages: 1-6
    Received: 28 December 2018
    Accepted: 1 February 2019
    Published: 26 May 2019
    DOI: 10.11648/j.wjac.20190401.11
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    Abstract: The purpose of this paper is to introduce the application and Practice of a wet rubbing fastness improver DM-2589N in dark cotton fabrics. Methodology - The influence of DM-2589N mass concentration, baking temperature and time on the rubbing fastness are studied. The effects of DM-2589N on different fabrics, different dyes, and the effects of DM-25... Show More
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  • Research the Extinguish of the Oil and Gas Well’s Fires

    Muthana Al-Jaboori

    Issue: Volume 4, Issue 1, March 2019
    Pages: 7-13
    Received: 16 April 2019
    Accepted: 13 May 2019
    Published: 4 June 2019
    DOI: 10.11648/j.wjac.20190401.12
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    Abstract: This research paper concerns the oil and gas well’s fires and the modern extinguishing process. We will introduce the fire thermal, chemical, and physical mechanisms on which our quenching mathematical model will be constructed based on the fire thermal parameters. The new technique involves the whole thermal sphere not only the fire visible core. ... Show More
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  • A Highly Selective and Efficient Method for the Preparation of Amides from Carboxylic Acids and Amines Using Sodium Hydrogen Sulfate Adsorbed on Silica Gel †

    Rathod Aravind Kumar, Nayaki Salvanna, Biswanath Das, Jajula Kashanna

    Issue: Volume 4, Issue 1, March 2019
    Pages: 14-18
    Received: 23 February 2019
    Accepted: 23 April 2019
    Published: 17 June 2019
    DOI: 10.11648/j.wjac.20190401.13
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    Abstract: The formation of amides from carboxylic acids and amines has been catalyzed efficiently with sodium hydrogen sulfate adsorbed on silica gel (NaHSO4.SiO2) at room temperature to give the products in high yields. The conversion carried out under reflux requires less reaction times and forms the products in higher yields. The reaction is highly select... Show More
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