SINTESIS SENYAWA 4-((2-(2,4-DINITROFENIL)HIDRAZON)METIL)-2-METOKSIFENOL DARI VANILIN SEBAGAI SENSOR KIMIA; SYNTHESIS OF 4-((2-(2,4-DINITROPHENYL)HYDRAZONE)METHYL)-2-METHOXYPHENOL FROM VANILLIN AS CHEMOSENSORS

Puspitasari, Desinta D, Bambang Purwono

2015 | Skripsi | FMIPA

Synthesis of 4-((2-(2,4-dinitrophenyl)hydrazone)methyl)-2-methoxy phenol from vanillin as chemosensors has been conducted. Synthesis was done by reacting vanillin and 2,4-dinitrophenylhydrazine through the addition-elimination reaction with an acid catalyst. Synthesized hydrazone compounds were identified by Infrared Spectrophotometer. The compounds were tested as indicator of acid-base titration and detection of spoiled food. Synthesis of 4-((2-(2,4-dinitrophenyl)hydrazone)methyl)-2-methoxy phenol produced 33.4% of yields with melt was 269,9-271,6 ºC. The result of characterization by Infrared Spectrophotometer showed a hydrazone group (=N-NH). The compound test of chemosensor as an indicator of a weak acid-strong base titration compared with phenolphthalein indicator has ±0.2% of errors. While the chemosensor test for detection of spoiled food indicated that the hydrazone compound could be applied to the fish rotten producing a color change from orange to brown reddish.

Kata Kunci : hydrazone; vanillin; chemosensors; indicator