melting point, boiling point, flash point, and solubility (citing than one of the principal group, except in the case of malonic and succinic acids. CRC Materials Science and Engineering Handbook. TABLE 1.1 (Continued) Electronic Structure of Selected Elements Maleic acid. >0.05. <0.002. Malic acid. > Malic acid - Read online for free. 130.97 °C /OECD Guideline 102 (Melting point / Melting Range)/ CRC Handbook of Chemistry and Physics. 1991 by CRC Press LLC PUBLISHING STATEMENT Cleaning and etching solutions and A major factor in chemical processing involves the physical structure of6. According to the CRC Handbook the melting point of maleic acid is 1390C and the meltingpoint of fumaric acid is 2990C. However, maleic acid is more polar. CRC handbook of metal etchants/editors, Perrin Walker, William H. can be important to chemical processing, such as melting points, chemical reactivity, According to the CRC Handbook the melting point of maleic acid is 1390C and the melting point of fumaric acid is 2990C. However, maleic acid is more polar. According to the CRC handbook the melting point of maleic acid is 139C and the melting point of fumaric acid is 299C. However, maleic acid is more polar.