The gamma-Decalactone, with the CAS registry number 706-14-9, is also known as 4-Hydroxydecanoic acid gamma-lactone. It belongs to the product category of Lactone flavors. Its EINECS number is 211-892-8. This chemical's molecular formula is C₁₀H₁₈O₂ and molecular weight is 170.25. What's more, its systematic name is 5-Hexyldihydro-2(3H)-furanone. Its classification code is Skin / Eye Irritant. This chemical should be sealed and stored in a cool and dry place. Moreover, it should be protected from oxides. It can be used to prepared food and soap. It is used as daily cosmetics essence, and it can also be used as flavor enhancer of margarine. 

Physical properties of gamma-Decalactone are: (1)ACD/LogP: 2.451; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.45; (4)ACD/LogD (pH 7.4): 2.45; (5)ACD/BCF (pH 5.5): 42.95; (6)ACD/BCF (pH 7.4): 42.95; (7)ACD/KOC (pH 5.5): 513.47; (8)ACD/KOC (pH 7.4): 513.47; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 26.3 Å²; (13)Index of Refraction: 1.447; (14)Molar Refractivity: 48.041 cm³; (15)Molar Volume: 179.856 cm³; (16)Polarizability: 19.045×10^-24cm³; (17)Surface Tension: 31.02 dyne/cm; (18)Density: 0.947 g/cm³; (19)Flash Point: 105.788 °C; (20)Enthalpy of Vaporization: 50.467 kJ/mol; (21)Boiling Point: 266.685 °C at 760 mmHg; (22)Vapour Pressure: 0.009 mmHg at 25°C.

Preparation: this chemical can be prepared by decane-1,4-diol at the ambient temperature. This reaction will need reagents NaBrO₂·3H₂O, NaHCO₃, 4-(benzyloxy)-2,2,6,6-tetramethylpiperidine-1-oxyl and solvents CH₂Cl₂, H₂O with the reaction time of 3 hours. The yield is about 99%.

Uses of gamma-Decalactone: it can be used to produce 5-hexyl-dihydro-furan-2-one at the temperature of 30 °C. It will need reagents aq. KOH, 2-methyl-propan-2-ol with the reaction time of 15 hours. The yield is about 90%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need to wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C1OC(CCCCCC)CC1
(2)Std. InChI: InChI=1S/C10H18O2/c1-2-3-4-5-6-9-7-8-10(11)12-9/h9H,2-8H2,1H3
(3)Std. InChIKey: IFYYFLINQYPWGJ-UHFFFAOYSA-N

The toxicity data is as follows: