Propionic acid
CAS Number:79-09-4
Chemical Formula: C3H6O2
Synonyms:
Propionic acid
xtra pure, 99+% 1LT
Propionic acid, pure
Appearance: Colorless clear oily liquid
HS Code: 2915501000
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Propionic acid, also referred to as primary oleic acid, is a saturated monocarboxylic acid with three carbon atoms. It is one of the representative volatile short-chain fatty acids. Its molecular formula is CH3CH2COOH, and its molecular weight is 74.08. It appears as a colorless, transparent oily liquid with a pungent rancid odor. Melting point: -20.8°C, boiling point: 140.99°C (41.65°C at 1330 Pa), relative density: 0.9930, refractive index: 1.3869, acid dissociation constant Ka = 1.34 × 10^-5. It is miscible with water and soluble in ethanol, chloroform, and diethyl ether. It exhibits high chemical activity and acidity, and can undergo salt formation, esterification, reduction, and other reactions.
Parameters
| Parameter | Value |
| Melting point | −24-−23 °C(lit.) |
| Boiling point | 141 °C(lit.) |
| density | 0.993 g/mL at 25 °C(lit.) |
| vapor density | 2.55 (vs air) |
| vapor pressure | 2.4 mm Hg ( 20 °C) |
| refractive index | n20/D 1.386(lit.) |
| FEMA | 2924 | PROPIONIC ACID |
| Fp | 125 °F |
| storage temp. | Store below +30°C. |
| solubility | organic solvents: soluble(lit.) |
| pka | 4.86(at 25℃) |
| form | Liquid |
| Specific Gravity | 0.996 (20/4℃) |
| color | ≤10, APHA: |
| PH | 3.96(1 mM solution);3.44(10 mM solution);2.94(100 mM solution); |
| Odor | at 0.10 % in propylene glycol. pungent acidic cheesy vinegar |
| Odor Type | acidic |
| biological source | synthetic |
| Odor Threshold | 0.0057ppm |
| explosive limit | 2.1-12%(V) |
| Water Solubility | 37 g/100 mL |
| JECFA Number | 84 |
| Merck | 14,7825 |
| BRN | 506071 |
| Exposure limits | TLV-TWA 10 ppm (～30 mg/m^{3}) (ACGIH). |
| Dielectric constant | 3.2（Ambient） |
| Stability: | Stable. Incompatible with strong oxidizing agents. Flammable. |
| InChIKey | XBDQKXXYIPTUBI-UHFFFAOYSA-N |
| LogP | 0.33 at 25℃ |
| Surface tension | 24.07mN/m at 298.15K |
| CAS DataBase Reference | 79-09-94(CAS DataBase Reference) |
| NIST Chemistry Reference | Propanoic acid(79-09-4) |
| EPA Substance Registry System | Propionic acid (79-09-4) |
Safety Information
| Item | Details |
| Hazard Codes | C |
| Risk Statements | 36/37/38-34-10 |
| Safety Statements | 26-36-45-23 |
| RIDADR | UN 3463 8/PG 2 |
| OEB | A |
| OEL | TWA: 10 ppm (30 mg/m3), STEL: 15 ppm (45 mg/m3) |
| WGK Germany | 1 |
| RTECS | UE5950000 |
| Autoignition Temperature | 955 °F |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | II |
| HS Code | 29155010 |
| Hazardous Substances Data | 79-09-94(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 4.29 g/kg (Smyth) |
Products Description of Propionic acid CAS#79-09-4
Carbonyl compounds; organic acids; preservatives; preservatives and insecticides; food additives; feed additives; feed storage additives; carboxylic acids; organic raw materials; phenoxycarboxylic acid and aryloxyphenoxycarboxylic acid herbicides; herbicide intermediates; pesticide intermediates; fatty acids; mildew inhibitors; chemical intermediates – chemical fine chemicals; chemical products – organic solvents; organic chemical raw materials; bactericides; organic chemical raw materials; main products; acrylates; Building Blocks; analytical standards; standard products; HPLC and LC MS Mobile Phase Additive; gas chromatography standards (color scale); food and beverage standards; plant biochemical extracts; biochemical reagents; daily chemical raw materials; inorganic acids; pharmaceutical, pesticide and dye intermediates; chemical materials; organic carboxylic acids and their derivatives; Chinese medicine reference substances; propionic acid; synthetic fragrances; drug intermediate raw materials – synthetic drugs; organic chemical raw materials – carboxylic acid compounds; carboxylic acids and their derivatives; chemical industry; carboxylic acids; acids; organic; flavors and fragrances; acids; impurity reference substances; chemical raw materials; basic organic reagents;
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