Ahmad Talhah Suhaimi, Muhd Fauzi Safian, Mohd Muzamir Mahat, Mohamed Izzharif Abdul Halim, Zaidah Zainal Ariffin, Nor Azah Mohamad Ali, Essential Oil Chemical Constituent Analysis of Cinnamomum iners, Journal of Engineering and Applied Sciences, Volume 12,Issue 21, 2017, Pages 5369-5372, ISSN 1816-949x, jeasci.2017.5369.5372, (https://makhillpublications.co/view-article.php?doi=jeasci.2017.5369.5372) Abstract: The leaves and stems of Cinnamomum iners Reinw. ex Blume var. Subcuneatum (Miq) W.K. Soh (C. iners) were collected from Forest Research Institute Malaysia (FRIM) as the sample for this study. A large-scale steam distillation method was used to extract oil from 47 kg of the sample; yielding 0.063% essential oil. The C. iners essential oil was qualitatively analysed using Gas Chromatography-Mass Spectrometry (GC-MS) and reconfirmed using the Kovats Index (KI). The analysis showed that the main components of C. iners oil consists of geraniol (63.65%), linalool (19.42%), (E)-caryophyllene (4.80%), geranyl propanoate (3.51%), (E)-phytol acetate (1.91%), dill apiole (1.36%), β-selinene (1.01%), α-selinene (0.98%), β-pinene (0.98%), (E)-nerolidol (0.64%), α-pinene (0.63%), (E)-β-ocimene (0.60%) and α-humulene (0.52%). A quantitative analysis of linalool (from the extracted essential oil) was conducted using a Gas Chromatography-Flame Ionisation Detector (GC-FID) according to the Internal Standard Method (ISM). The linalool concentration was found to be 327 351 ppm. Keywords: gas Chromatography-Flame Ionisation Detector (GC-FID);essential oils;C. iners;Kovats index;Gas Chromatography-Mass Spectrometry (GC-MS)