Hydrochloric acid is the chemical, used in the production of batteries, bulbs, photoflash etc. This is also suited for the processing of sugar as well as gelatin. This is extensively popular as a "workhorse" chemical as it can be utilized in variety of ways. Hydrochloric acid is also suited for sugar processing as well as gelatin production. This is the perfect mixture of hydrogen and chlorine and is considered a gas at atmospheric pressure and temperature. Also, this is popular as a gas solution of water.