Charged Dislocations in Sodium Chloride Crystals Containing Sodium Hydroxide

This paper mainly studies the glossnesschange、mechanical properties change and hardness change of polyurea coatings during the immersing experiment. The result of the glossness experiment shows that Qtech-116 polyurea sample glossness declining rate were 18.33%, 3.69% and 0.83% after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d.The mechanical properties results shows that the tensile strengt decrease rate were 16.30%、2.69% and 2.28% after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d. Qtech-116 polyurea sample hardness showns declined 0.83%、no change and increased 35.81% respectively after immersed in 5％H2SO4、5％NaOH and 3.5％NaCl for 60d.

Download Full-text

Comparative Study of the Efficiency of Sodium Hydroxide, Sodium Hypochlorite and Sodium Chloride as Extractors of Residual Silver From X-Ray Plates and Graphical Effluents by the Volhard Method

International Journal of Advanced Engineering Research and Science ◽

10.22161/ijaers.6.2.18 ◽

2019 ◽

Vol 6 (2) ◽

pp. 144-151

Author(s):

Carlos Alberto Paraguassu-Chaves ◽

Cláudio José Pinto de Faria ◽

Filomena Maria Minetto Brondani ◽

Vera Lúcia Matias Gomes Geron ◽

Nelson Pereira Silva Junior ◽

...

Keyword(s):

Sodium Chloride ◽

Comparative Study ◽

Sodium Hydroxide ◽

Sodium Hypochlorite ◽

X Ray

Download Full-text

Pengaruh Lama Waktu Pengadukan Terhadap Pengikatan Impuritis untuk Meningkatkan Kadar NaCl Pada Garam Rakyat

Journal of Pharmacy and Science ◽

10.53342/pharmasci.v1i1.46 ◽

2016 ◽

Vol 1 (1) ◽

pp. 9-14

Author(s):

Rika Puji Astuti ◽

Cicik Herlina Yulianti ◽

Rahmad Aji Prasetya

Keyword(s):

Sodium Chloride ◽

Sodium Hydroxide ◽

Barium Chloride ◽

Chemical Compounds ◽

Main Substance ◽

Nacl Concentration ◽

Before And After ◽

Stirring Time ◽

Standard Quality

ABSTRAKGaram dapat didefinisikan sebagai suatu kumpulan senyawa kimia yang bagian utamanya adalah Natrium Chlorida (NaCl) dengan zat-zat pengotor terdiri dari MgCl2, MgSO4, CaSO4, dan lain-lain. Dalam penelitian ini digunakan sampel garam rakyat dari Pasar Larangan Sidoarjo yang memiliki kualitas dibawah standar, dengan kadar NaCl 81,88% b/b. Oleh karena itu, diperlukan pemurnian garam dengan menggunakan metode rekristalisasi. Penelitian ini dilakukan untuk mengetahui pengaruh lama waktu pengadukan (15, 30, dan 45menit) terhadap penambahan beberapa senyawa kimia, seperti natrium hidroksida (NaOH), natrium karbonat (Na2CO3) dan barium klorida (BaCl2) untuk mengurangi ion polutan (Ca2+, Mg2+ dan SO42-). Sehingga kadar NaCl dalam garam rakyat akan meningkat. Kadar NaCl dihitung sebelum dan setelah diberi perlakuan dengan menggunakan metode titrasi argentometri. Hasil penelitian menunjukkan bahwa kadar NaCl tertinggi diperoleh pada rekristalisasi dengan lama waktu pengadukan 45 menit, dengan kadar 98,86% b/b. Kemurnian ini sesuai untuk memenuhi tuntutan kebutuhan masyarakat dan industri.Kata Kunci: Garam Rakyat, Kadar NaCl, Lama Waktu PengadukanABSTRACTSalt can be defined as chemical compounds which the main substance is Sodium Chloride (NaCl) with impurity substances consist of MgCl2, MgSO4, CaSO4, etc. This study used public salt from Larangan Market Sidoarjo which has sub-standard quality, and the concentration of NaCl is about 81,88%b/b. Hence, salt purification is needed using recrystallization method. This study was conducted to determine the influence of stirring time (15, 30, and 45 minutes) of the addition of several chemical compounds, such as sodium hydroxide (NaOH), sodiumcarbonate (Na2CO3) and barium chloride (BaCl2) in order to reduce the pollutant ions (Ca2+, Mg2+ and SO42-). Eventually the percentage of NaCl concentration in public salt will increase. NaCl concentration was calculated before and after treatment was using argentometry titration. The results shows that the highest NaCl concentration is obtained at recrystallization with stirring time 45 minutes, concentration 98,86% b/b. This purity suitable to meet the needs of society and industry demands.Keywords: Stirring Time, The Concentration Of NaCl, Public Salt.

Download Full-text