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propionic acid

Propionic acid, also known as primary oleic acid, is a short chain saturated fatty acid with the chemical formula CH3CH2COOH and a molecular weight of 74.08. Propionic acid belongs to weak electrolytes (Ka=1.34 × 10-5), and its aqueous solution is weakly acidic but highly corrosive. Steam is irritating to the skin and respiratory tract. At room temperature and pressure, propionic acid is a colorless, clear, oily liquid with an unpleasant odor of rancidity. It is miscible with water, ethanol, chloroform, and ether.

Product Description

Specification parameters

中文名 丙酸
外文名 Propanoic Acid
别    名 初油酸 
化学式 CH3CH2COOH
分子量 74.08
CAS登录号 79-09-4
EINECS登录号 201-176-3
熔    点 -20.8 ℃(101 kPa)
沸    点 141 ℃(101 kPa)

 

essential information

Propionic acid, also known as primary oleic acid, is a short chain saturated fatty acid with the chemical formula CH3CH2COOH and a molecular weight of 74.08. Propionic acid belongs to weak electrolytes (Ka=1.34 × 10-5), and its aqueous solution is weakly acidic but highly corrosive. Steam is irritating to the skin and respiratory tract. At room temperature and pressure, propionic acid is a colorless, clear, oily liquid with an unpleasant odor of rancidity. It is miscible with water, ethanol, chloroform, and ether.

 

application area 

Propionic acid is mainly used as a food preservative and mold inhibitor, as well as an inhibitor of viscous substances such as beer, a solvent for nitrocellulose, and a plasticizer. It can also be used in the preparation of nickel plating solutions, the preparation of food flavorings, and the manufacturing of pharmaceuticals, pesticides, and mold inhibitors.

 

Packaging, Storage, Transportation, and Safety
Storage method

Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. The storage temperature should not exceed 30 ℃. Keep the container sealed. It should be stored separately from oxidants, reducing agents, and alkalis, and avoid mixing storage. Adopt explosion-proof lighting and ventilation facilities. Prohibit the use of mechanical equipment and tools that are prone to generating sparks. The storage area should be equipped with emergency response equipment for leaks and suitable containment materials.
 
Transportation method

During railway transportation, the dangerous goods loading table in the "Dangerous Goods Transport Rules" of the Ministry of Railways should be strictly followed for loading. When shipping, the packaging should be intact and the loading should be secure. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or be damaged. The tank truck used for transportation should have a grounding chain, and a perforated partition can be installed inside the tank to reduce static electricity generated by vibration. It is strictly prohibited to mix and transport with oxidants, reducing agents, alkalis, edible chemicals, etc. When transporting by road, follow the prescribed route and do not stay in residential or densely populated areas.