CAS No.: 4724-48-5
Molecular Formula: C8H19O3P
Molecular Weight: 194.21
EINECS No.: 225-218-5 
The main uses of 1-octyl phosphate (octyl phosphonic acid, CAS 4724-48-5) are as follows: 
Organic synthesis intermediates
As important organophosphonic acid derivatives, they are widely used in the synthesis of drugs, pesticides and functional materials.
Their long-chain alkyl structures can participate in coupling reactions or be used as ligands to modify metal catalysts. 

2. Surface modifiers
These are combined with metal oxides (such as alumina and zinc oxide) through phosphate groups, and are used for surface modification of materials to enhance hydrophobicity or anti-corrosion performance.