The CAS registry number of 1-Octylphosphonic acid is 4724-48-5. Its EINECS registry number is 225-218-5. In addition, the molecular formula is C₈H₁₉O₃P. The IUPAC name is octylphosphonic acid. What's more, it should be stored in sealed container, and put them in a cool and dry place.

Physical properties about this chemical are: (1)ACD/LogP:1.70; (2)ACD/LogD (pH 5.5):-1.22; (3)ACD/LogD (pH 7.4):-1.85; (4)ACD/BCF (pH 5.5):1; (5)ACD/BCF (pH 7.4):1; (6)ACD/KOC (pH 5.5):1; (7)ACD/KOC (pH 7.4):1; (8)#H bond acceptors:3; (9)#H bond donors:2; (10)#Freely Rotating Bonds:7; (11)Polar Surface Area:45.34 Å²; (12)Index of Refraction:1.458; (13)Molar Refractivity:49.05 cm³; (14)Molar Volume:179.7 cm³; (15)Polarizability:19.44 ×10^-24cm³; (16)Surface Tension:41.4 dyne/cm; (17)Density:1.08 g/cm³; (18)Flash Point:151.8 °C; (19)Enthalpy of Vaporization:62.63 kJ/mol; (20)Boiling Point:327.5 °C at 760 mmHg; (21)Vapour Pressure:4.02E-05 mmHg at 25°C.

Preparation of 1-Octylphosphonic acid: it can be prepared by octyl-phosphonic acid diethyl ester. This reaction will need reagent conc. aq. HCl. The reaction time is 24 hours by heating. The yield is about 86%.

Uses of 1-Octylphosphonic acid: it can react with iodomethane to get octyl-phosphonic acid dimethyl ester. This reaction will need reagent Cs₂CO₃ and solvent acetonitrile. The yield is about 35%.

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

You can still convert the following datas into molecular structure:
(1)SMILES: O=P(O)(O)CCCCCCCC
(2)InChI: InChI=1/C8H19O3P/c1-2-3-4-5-6-7-8-12(9,10)11/h2-8H2,1H3,(H2,9,10,11)
(3)InChIKey: NJGCRMAPOWGWMW-UHFFFAOYAB