When an employer or an employer’s supplier claims that revealing the identity of a toxic substance, pursuant to the requirements of sections 31-40j to 31-40p, inclusive, would constitute the disclosure of a legally protectable trade secret, he may register this information as a trade secret with the Labor Commissioner. The commissioner shall assign a registry number to the substance. No employee of the Labor Department shall disclose to any person the identity of any substance so registered, except as required under the provisions of § 1-210. When responding to any request for information under the provisions of sections 31-40j to 31-40p, inclusive, such employer or supplier may refer to such substance by its registry number, and the employer or supplier shall not be required to reveal the name of such substance. All other information concerning such substance shall be provided by the employer or supplier as required by the provisions of sections 31-40j to 31-40p, inclusive.