Reverse osmosis membrane and method for producing reverse osmosis membrane

A method for producing a reverse osmosis membrane, the method comprising:

• a coating film forming step of forming a coating film soluble in a predetermined solvent on a surface of a porous support substrate insoluble in the solvent;
• a pre-carbon film forming step of forming a pre-carbon film on the coating film by a physical vapor deposition method using carbon as a target material under an atmosphere containing nitrogen gas together with a noble gas, wherein a ratio of the noble gas:the nitrogen gas is 1:0.1 to 1:10;
• a coating film removal step of dissolving and removing the coating film with the solvent after the pre-carbon film is formed;
• and
• an organization step of compressing the pre-carbon film by applying a pressure to the pre-carbon film by using pure water of 5.5 MPa or greater for 20 hours or longer to form a separation active layer formed of a carbon film containing organized carbon.