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Pengaruh Konsentrasi Asam Sulfat dan Waktu Reaksi Pada Sintesis α-Terpineol dari Terpentin

Indonesian Journal of Chemical Science · Vol. 8 No. 1 (2019) · hlm. 23–27

DOI
10.15294/ijcs.v8i1.23382
ISSN
2502-6844, 2252-6951
Terbit
2019-02-15
Penerbit
Universitas Negeri Semarang
Bahasa
eng

Abstrak

Abstract The aim of this research is to study on effect of the catalyst concentration of sulfuric acid (H2SO4) and reaction time in α-terpineol synthesis process from turpentine. Turpentine used in this research contents 65.891% α-pinene. Parameters that studied were the catalyst concentration of H2SO4 (20%, 25%, 30%, 35%) and reaction time (1 hour, 2 hours, 3 hours, 4 hours and 5 hours). The volume of ethanol used 135 mL. The study was carried out using a three-neck flask, a condenser, hot plate, a magnetic stirrer and thermometer with the speed stirring of 500 rpm. The product of synthesis were neutralized using 5% NaOH, then analyzed using GC and GC-MS. The results of this study showed that the highest selectivity of α-terpineol was 11,54% at 25% H2SO4 catalyst and 3 hours reaction time. Keyword: α-terpineol, α-pinene, turpentine, H2SO4

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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/sju/index.php/ijcs/oai, pertama di-harvest 5 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Pengaruh Konsentrasi Asam Sulfat dan Waktu Reaksi Pada Sintesis α-Terpineol dari Terpentin</dc:title>
	<dc:creator>Prastiwi, Yohanna Francisca Budi</dc:creator>
	<dc:creator>Selfiana, Teti</dc:creator>
	<dc:creator>Utami, Herti</dc:creator>
	<dc:description xml:lang="en-US">Abstract 
The aim of this research is to study on &amp;nbsp;effect of the catalyst concentration of sulfuric acid (H2SO4) and reaction time in α-terpineol synthesis process from turpentine. Turpentine used in this research contents 65.891% α-pinene. Parameters that studied were the catalyst concentration of H2SO4 (20%, 25%, 30%, 35%) and reaction time (1 hour, 2 hours, 3 hours, 4 hours and 5 hours). The volume of ethanol used 135 mL. The study was carried out using a three-neck flask, a condenser, hot plate, a magnetic stirrer and thermometer with the speed stirring of 500 rpm. The product of synthesis were neutralized using 5% NaOH, then analyzed using GC and GC-MS. 
The results of this study showed that the highest selectivity of α-terpineol was 11,54% at 25% H2SO4 catalyst and 3 hours reaction time.
Keyword : α-terpineol, α-pinene, turpentine, H2SO4</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2019-02-15</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unnes.ac.id/sju/ijcs/article/view/23382</dc:identifier>
	<dc:identifier>10.15294/ijcs.v8i1.23382</dc:identifier>
	<dc:source xml:lang="en-US">Indonesian Journal of Chemical Science; Vol 8 No 1 (2019); 23-27</dc:source>
	<dc:source>2502-6844</dc:source>
	<dc:source>2252-6951</dc:source>
	<dc:source>10.15294/ijcs.v8i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/sju/ijcs/article/view/23382/12698</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2019 Indonesian Journal of Chemical Science</dc:rights>
</oai_dc:dc>