The present invention relates to an aqueous composition comprising:(i) a steroidal neuromuscular blocking agent that is a Rocuronium salt, further wherein the steroidal neuromuscular blocking agent is present at a concentration ranging from 5 mg/mL to 20 mg/mL based on the total volume of the aqueous composition； and(ii) an excipient that includes D-gluconic acid, D-glucono-delta-lactone, or a combination thereof, where the steroidal neuromuscular blocking agent and the excipient are dissolved in a solution consisting of water.Furthermore the present invention relates to a liquid pharmaceutical composition comprising or consisting of said aqueous composition and a method for producing said aqueous composition.
