Methyl salicylate

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1. METHYL SALICYLATE MADE BY- Ashutosh Kumar Ashwani Kant

2. PHYSICAL & CHEMICAL PROPERTIES METHYL SALICYLATE is a colorless yellowish or reddish liquid with odor of wintergreen. COLOURLESS OR YELLOW-TO-RED OILY LIQUID WITH CHARACTERISTIC ODOUR. Odor:- LIQUID HAVING THE CHARACTERISTIC ODOR OF WINTERGREEN. Taste :- LIQUID HAVING THE CHARACTERISTIC TASTE OF WINTERGREEN. Density:- 1.174

3. PHYSICAL & CHEMICAL PROPERTIES Boiling Point:- 432° F at 760 mm Hg Melting Point :- 16.5° F Solubility:- less than 1 mg/mL at 66° F Water Solubility- Slightly soluble SOL IN CHLOROFORM , ETHER; MISCIBLE WITH ALC, GLACIAL ACETIC ACID Flash Point:- 205 ° F

4. COMPUTED PROPERTIES Property Name Property Value Molecular Weight 152.149 g/ mol Hydrogen Bond Donor Count 1 Hydrogen Bond Acceptor Count 3 Rotatable Bond Count 2 Complexity 144 Topological Polar Surface Area 46.5 A^2 Monoisotopic Mass 152.047 g/ mol Exact Mass 152.047 g/ mol XLogP3 2.3 Compound Is Canonicalized true Formal Charge 0 Heavy Atom Count 11 Defined Atom Stereocenter Count 0 Undefined Atom Stereocenter Count 0 Defined Bond Stereocenter Count 0 Undefined Bond Stereocenter Count 0 Isotope Atom Count 0 Covalently-Bonded Unit Count 1 Property Name Property Value Molecular Weight 152.149 g/ mol Hydrogen Bond Donor Count 1 Hydrogen Bond Acceptor Count 3 Complexity 144 Rotatable Bond Count 2 Exact Mass 152.047 g/ mol Covalently-Bonded Unit Count 1

5. STRUCTURES 2D

6. STRUCTURES 3 D

7. METHOD OF PREPRATION 1METHOD :- OIL IS WATER-STEAM DISTILLED FROM LEAVES CHARGED INTO THE STILL AND ALLOWED TO MACERATE FOR SEVERAL HR TO HYDROLYZE GAULTHERIN GLUCOSIDE (METHYL SALICYLATE + GLUCOSE). DISTILLATION FROM 5-6 HR YIELDS APPROXIMATELY 0.7% ESSENTIAL OIL. OFTEN ADULTERATED BY CO-DISTILLING SWEET BIRCH BARK. MOSTLY PREPD BY ESTERIFICATION OF SALICYLIC ACID WITH METHANOL. PRODUCT OF COMMERCE IS ABOUT 99% PURE.

8. 2 METHOD LINIMENT, COMPOUND: MENTHOL 4.5 G, CAMPHOR OIL RECTIFIED 25 ML, OLIVE OR PEANUT OIL 30 ML, METHYL SALICYLATE TO MAKE 100 ML. OINTMENT, COMPOUND: METHYL SALICYLATE 10 ML, MENTHOL 10 G, WHITE WAX 5 G, HYDROUS WOOL FAT TO MAKE 100 G. SPIRIT, PHENOLATED (PODIATRY): LIQUEFIED PHENOL 1 ML, METHYL SALICYLATE 3 ML, COMPOUND MYRCIA SPIRIT 25 ML, ALCOHOL RUBBING COMPOUND TO MAKE 100 ML.

9. USES:- Food additives -> Flavoring Agents Flavouring Agent : FLAVOURING_AGENT Industry Uses Not known or reasonably ascertainable Odor agents Consumer Uses Cleaning and furnishing care products Not known or reasonably ascertainable Personal care products

10. RECENT RESEARCH In this paper, we propose a new and complete mechanism for dual fluorescence of methyl salicylate (MS) under different conditions using a combined experimental (i.e., steady-state absorption and emission spectra and time-resolved fluorescence spectra) and theoretical (i.e., time-dependent density function theory) study. First, our theoretical study indicates that the barrier height for excited state intramolecular proton transfer (ESIPT) reaction of ketoB depends on the solvent polarity. In nonpolar solvents, the ESIPT reaction of ketoB is barrierless; the barrier height will increase with increasing solvent polarity. Second, we found that, in alcoholic solvents, intermolecular hydrogen bonding plays a more important role. The ketoB form of MS can form two hydrogen bonds with alcoholic solvents; one will facilitate ESIPT and produce the emission band in the blue region; the other one precludes ESIPT and produces the emission band in the near-UV region. Our proposed new mechanism can well explain previous results as well as our new experimental results.

11. Thanking you