The Acetylsulfuric acid, with the CAS registry number 2308-54-5, is also known as Sulfuric acid, monoanhydride with acetic acid. This chemical's molecular formula is C₂H₄O₅S and molecular weight is 140.12. What's more, its systematic name is Acetyl hydrogen sulfate.

Physical properties of Acetylsulfuric acid are: (1)ACD/LogP: -0.835; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -4.34; (4)ACD/LogD (pH 7.4): -4.34; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 1.00; (8)ACD/KOC (pH 7.4): 1.00; (9)#H bond acceptors: 5; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 89.05 Å²; (13)Index of Refraction: 1.475; (14)Molar Refractivity: 23.509 cm³; (15)Molar Volume: 83.57 cm³; (16)Polarizability: 9.319×10^-24cm³; (17)Surface Tension: 64.0 dyne/cm; (18)Density: 1.677 g/cm³.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(OS(=O)(=O)O)C
(2)Std. InChI: InChI=1S/C2H4O5S/c1-2(3)7-8(4,5)6/h1H3,(H,4,5,6)
(3)Std. InChIKey: HZWXJJCSDBQVLF-UHFFFAOYSA-N