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Propionic acid

Propionic acid structure

CAS No:
79-09-4
Formula:
C3H6O2
Chemical Name:
Propionic acid
Synonyms:
Propanoic acid;Propionic acid;Carboxyethane;Ethylformic acid;Metacetonic acid;Methylacetic acid;Prozoin;Pseudoacetic acid;Ethanecarboxylic acid;Luprosil;MonoProp;Antischim B;Propkorn;Propcorn;Adofeed;Toxi-Check;784139-72-6;1032826-44-0
Categories:
Cosmetic Ingredient > Cosmetic Preservative

Description

Propionic acid, CH3CH2COOH, also known as propanoic acid and methylacetic acid, is a clear, colorless liquid that boils at 140°C (284 OF). It is flammable. It has a pungent odor and is soluble in water and alcohol. The Odor Threshold is 0.16 ppm. Propionic acid is an aliphatic monocarboxylic acid. Propionic acid is used in nickel electroplating solutions,perfumes, artificial flavors, pharmaceuticals, and manufacturing propionates.

Propionic acid Basic Attributes

Molecular Weight：

74.07850

Exact Mass：

74.08

EC Number：

273-598-6

HScode：

2915501000

Characteristics

PSA：

37.30000

XLogP3：

0.48100

Appearance：

Propionic acid is a colorless liquid with a sharp rancid odor. Produces irritating vapor. (USCG, 1999)

Density：

0.9930 g/cm³ @ Temp: 20 °C

Melting Point：

-20.7 °C

Boiling Point：

141.1 °C

Flash Point：

51ºC

Refractive Index：

1.385-1.387

Water Solubility：

H2O: 37 g/100 mL

Storage Conditions：

0-6ºC

Vapor Pressure：

2.4 mm Hg ( 20 °C)

Vapor Density：

2.55 (vs air)

Toxicity：

LD50 orally in rats: 4.29 g/kg (Smyth)

Flammability characteristics：

Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.

Explosive limit：

Explosive limits , vol% in air: 2.1-12

Odor：

Slightly pungent disagreeable, rancid odor

Taste：

SOUR & MILDLY CHEESE-LIKE

PKA：

4.88None

Safety Information

Packing level：

Hazard category：

Transport codes：

UN 3463 8/PG 2

wgk germany：

hazard class code：

R34

safety instructions：

S23-S36-S45

RTECS Number：

UE5950000

Marks：

Storage features：

Fireproof. Separated from strong oxidants, strong bases and food and feedstuffs.

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents. Flammable.

Precautionary statement(s)：

P210-P280-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P403 + P235

Hazard Statements：

H226-H314-H335

Propionic acid Use and Manufacturing

1. Mainly used as food preservative and mildew inhibitor. It can also be used as an inhibitor for medium viscosity substances such as beer. Used as nitrocellulose solvent and plasticizer. It is also used in the preparation of nickel plating solution, the preparation of food flavors, and the manufacture of medicines, pesticides, and mold inhibitors. 2. Organic synthesis raw materials are used to synthesize propylene salt, propionate ester, vinyl propionate ester, allyl cellulose, etc. Propionic acid is a safe food preservative that can inhibit bacterial growth. It is also an effective organic acid preservative in the storage of grain and feed. It has a strong bacteriostatic effect on various molds, aerobic bacillus or gram-negative bacilli. Using propionic acid as an aerosol can prevent mildew on bread and other foods. It is also used as a solvent and plasticizer for nitrocellulose. It can also be used as a reagent for measuring aromatic diamines and acidulants. 3. Cosmetics are used as hair tonics, anti-dandruff and itching agents

Computed Properties

Molecular Weight:74.08
XLogP3:0.3
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:74.036779430
Monoisotopic Mass:74.036779430
Topological Polar Surface Area:37.3
Heavy Atom Count:5
Complexity:40.2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Oxygen

Hydrocarbon waxes

Downstream Products

Ethyl propionate

Price Analysis

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