n-Butanoic acid

The IUPAC name of this chemical is Butyric acid. With the CAS registry number 107-92-6 and EINECS registry number 203-532-3, it is also named as ethylacetic acid. In addition, the molecular formula is C₄H₈O₂. It is an oily colorless liquid that is easily soluble in water, ethanol, and ether, and can be separated from an aqueous phase by saturation with salts such as calcium chloride. And it has an unpleasant smell and acrid taste. Besides, it is found in butter, parmesan cheese, vomit, and as a product of anaerobic fermentation (including in the colon and as body odor). 

Physical properties about this chemical are: (1)ACD/LogP: 0.70; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 8.756; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 2; (8)#H bond donors: 1; (9)#Freely Rotating Bonds: 2; (10)Polar Surface Area: 37.3 Å²; (11)Index of Refraction: 1.411; (12)Molar Refractivity: 22.145 cm³; (13)Molar Volume: 89.188 cm³; (14)Polarizability: 8.779 ×10^-24cm³; (15)Surface Tension: 32.584 dyne/cm; (16)Density: 0.988 g/cm³; (17)Flash Point: 69.712 °C; (18)Enthalpy of Vaporization: 42.395 kJ/mol; (19)Boiling Point: 164.348 °C at 760 mmHg; (20)Vapour Pressure: 1.351 mmHg at 25°C.

Preparation of Butyric acid: It is industrially prepared by the fermentation of sugar or starch, brought about by the addition of putrefying cheese, with calcium carbonate added to neutralize the acids formed in the process. In addition, it can be prepared by butan-1-ol. The other product is butyraldehyde. This reaction will need reagent NaBrO₃ and catalyst Ru₂(dmnapy)Cl₄. The reaction time is 15 hours with ambient temperature. The yield is about 91.5%.

Uses of Butyric acid: it can be used as food, perfume and fishing bait additives, an animal feed supplement, an approved food flavouring. In addition, it is used in the preparation of various butyrate esters. Besides, it can react with 4-methyl-quinoline to get 4-methyl-2-propyl-quinoline. This reaction will need reagents sulfuric acid and iron(III) sulfate, and solvent H₂O. The reaction time is 20 hours with irradiation. The yield is about 76%.

When you are using this chemical, please be cautious about it as the following:
This chemical can cause burns. During using it, wear suitable protective clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. And in case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.).

You can still convert the following datas into molecular structure:
(1)SMILES: CCCC(=O)O
(2)InChI: InChI=1/C4H8O2/c1-2-3-4(5)6/h2-3H2,1H3,(H,5,6)
(3)InChIKey: FERIUCNNQQJTOY-UHFFFAOYAP

The toxicity data is as follows: