Consensus of Propanedial (542-78-9):
IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 36 ,1985,p. 163.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . EPA Genetic Toxicology Program.

Malondialdehyde is the organic compound with the formula CH₂(CHO)₂. With the CAS NO.542-78-9, it is also called propanedial; 1,3-Propanedione; 3-Oxopropanal; Malonyl dialdehyde. Malondialdehyde is a highly reactive compound that is not typically observed in pure form. Malondialdehyde is generated from reactive oxygen species (ROS), and as such is assayed in vivo as a bio-marker of oxidative stress.

Physical properties about Malondialdehyde are: (1)ACD/LogP: -0.987; (2)ACD/LogD (pH 5.5): -2.05; (3)ACD/LogD (pH 7.4): -3.35; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)ACD/KOC (pH 5.5): 1.00; (7)ACD/KOC (pH 7.4): 1.00; (8)#H bond acceptors: 2; (9)#Freely Rotating Bonds: 2; (10)Index of Refraction: 1.367; (11)Molar Refractivity: 16.321 cm³; (12)Molar Volume: 72.693 cm³; (13)Polarizability: 6.47 10-24cm³; (14)Surface Tension: 29.3999996185303 dyne/cm; (15)Density: 0.991 g/cm³; (16)Flash Point: 28.881 °C; (17)Enthalpy of Vaporization: 34.713 kJ/mol; (18)Boiling Point: 108.332 °C at 760 mmHg; (19)Vapour Pressure: 26.0349998474121 mmHg at 25°C

You can still convert the following datas into molecular structure:
(1)InChI=1S/C3H4O2/c4-2-1-3-5/h2-3H,1H2;
(2)InChIKey=WSMYVTOQOOLQHP-UHFFFAOYSA-N;
(3)SmilesC(C=O)C=O;

The toxicity data is as follows: