Maleic anhydride, wanda kuma aka sani da MA, wani fili ne na kwayoyin halitta wanda aka yi amfani da shi sosai wajen samar da guduro.Yana tafiya da sunaye daban-daban, ciki har da malic anhydride mara ruwa da anhydride na maleic.Tsarin sinadarai na anhydride na maleic shine C4H2O3, nauyin kwayoyin halitta shine 98.057, kuma yanayin narkewa shine 51-56 ° C.Majalisar Dinkin Duniya Mai Haɗarin Kaya mai lamba 2215 an rarraba shi azaman abu mai haɗari, don haka yana da mahimmanci a sarrafa wannan abu cikin kulawa.