Ginin sinadarai na barasa wani nau'in fili ne na kwayoyin halitta wanda ya ƙunshi ƙungiyar hydroxyl (-OH) da ke haɗe da ƙwayar carbon.Ana yawan amfani da shi azaman kaushi, man fetur, da maganin kashe kwayoyin cuta.Akwai nau'ikan barasa iri-iri, gami da methanol, ethanol, propanol, da butanol, kowannensu yana da kaddarori da aikace-aikace daban-daban.Ethanol, alal misali, shine nau'in barasa da ake samu a cikin abubuwan sha kuma ana amfani dashi azaman mai.Methanol, ana amfani da shi azaman kaushi na masana'antu da kuma samar da formaldehyde da sauran sinadarai.Duk da yake barasa suna da kaddarorin amfani masu yawa, kuma suna iya zama mai guba da ƙonewa idan ba a sarrafa su da kyau ba.