Exhibit 32.1

#### CERTIFICATION PURSUANT TO18 U.S.C. SECTION 1350,AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report on Form 20-F of Bontan Corporation Inc.. for the year ended March 31, 2004, as filed with the Securities and Exchange Commission, I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

|   |  |                                                                                                                                                                | 
|-- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | 
|1. |  | The annual report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and                      
|  
|2. |  | The information contained in the annual report fairly presents, in all material respects, the financial condition and results of operations of the registrant.

Date:  August 11, 2004

/s/   Kam ShahChief Executive Officer (May 17, 2004 to the date of this report)and Chief Financial Officer

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

---

Exhibit 32.2

#### CERTIFICATION PURSUANT TO18 U.S.C. SECTION 1350,AS ADOPTED PURSUANT TOSECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report on Form 20-F of Bontan Corporation Inc.. for the year ended March 31, 2004, as filed with the Securities and Exchange Commission, I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

|   |  |                                                                                                                                                                | 
|-- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | 
|1. |  | The annual report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and                      
|  
|2. |  | The information contained in the annual report fairly presents, in all material respects, the financial condition and results of operations of the registrant.

Date:  May 17, 2004

/s/   Terence RobinsonChief Executive Officer

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.