Product Details
Introduction
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Name: Propionic acid
CAS No: 79-09-4
Molecular Formula: C3H6O2
Under normal temperature and pressure, propionic acid is a colorless and clear oily liquid with unpleasant rancidity and pungent odor, which can be miscible with water, ethanol, chloroform and ether.
Propionic acid is a weak electrolyte (Ka = 1.34 × 10-5). Its aqueous solution is weakly acidic but highly corrosive, and its vapor is irritating to skin and respiratory tract.
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Specifications
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ITEM
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STANDARD DATA
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Appearance
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Colorless to yellowish liquid with slightly irritating odor.
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Relative density(20/20℃)
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0.993~0.997
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Boiling range(≥ 95%)
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138.5-142.5℃
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Acid content%
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≥99.5
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Arsenic %
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≤0.0003
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Heavy metal(Pb)%
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≤0.001
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Moisture%
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≤0.3
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Packing: 200kg/drum.
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Application
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- Used as organic reagent, esterifying agent and plasticizer. Propionic acid is also a common organic solvent because it dissolves most organics.
- Propionic acid can be used in some pickling and polishing solutions, as a buffer in weak acid solutions (such as zinc plating and electroless nickel plating), as an additive in semi-bright nickel plating electrolytes, to improve the binding force of passivation films in zinc and cadmium passivation solutions, and is often used to adjust the pH of weak acid plating solutions.
- Synthesis of propionic acid derivatives.
- Determination of aromatic diamines, gas chromatography analysis standard, can also be used to inhibit the growth of fungi in insect cell culture.
- As a food preservative, propionic acid can prevent food decay and deterioration caused by microorganisms, prolong the storage time, and is especially suitable for the preservation and storage of bread and cakes.
- Used as a spice intermediate, propionic acid is used with acetic acid in butter, milk and yogurt, and can be used as a raw material for synthetic spices to give spices a natural sour taste.
- It is used as a pharmaceutical intermediate.
Chemical & physical properties
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Molecular formula
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C3H6O2
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Molecular weight
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74.08
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CAS NO
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79-09-4
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EINECS NO
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201-176-3
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E number
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E280
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Density
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0.99 g/cm³(101 kPa, 25℃)
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Appearance
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Colorless oily liquid
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Flash point
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54 ℃
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Melting point
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-20.8 ℃
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Boiling point
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141 ℃
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Water Solubility
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8.19 g/g (−28.3 °C)
34.97 g/g (−23.9 °C)
Miscible (≥ −19.3 °C)
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