This chemical is called Hexylphosphonic acid, and its CAS registry number is 4721-24-8. With the molecular formula of C₆H₁₅O₃P, its molecular weight is 166.16. Additionally, it should be sealed in the cool and dry environment.

Other characteristics of the Hexylphosphonic acid can be summarised as followings: (1)ACD/LogP: 0.64; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 3; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 5; (10)Polar Surface Area: 45.34 Å²; (11)Index of Refraction: 1.454; (12)Molar Refractivity: 39.78 cm³; (13)Molar Volume: 146.7 cm³; (14)Polarizability: 15.77×10^-24cm³; (15)Surface Tension: 43.3 dyne/cm; (16)Density: 1.132 g/cm³; (17)Flash Point: 135 °C; (18)Enthalpy of Vaporization: 59.36 kJ/mol; (19)Boiling Point: 299.7 °C at 760 mmHg; (20)Vapour Pressure: 0.000278 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: O=P(O)(O)CCCCCC
2.InChI: InChI=1/C6H15O3P/c1-2-3-4-5-6-10(7,8)9/h2-6H2,1H3,(H2,7,8,9)
3.InChIKey: GJWAEWLHSDGBGG-UHFFFAOYAM