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Propionic acid 79-09-4

Propionic acid, also known as oleic acid, is a saturated monoprotic carboxylic acid containing three carbon atoms and is one of the typical volatile low-level fatty acids. Chemical formula: CH3CH2COOH. Molecular weight: 74.08. Colorless, clear, oily liquid with an unpleasant, rancid and pungent smell. Melting point: -20.8℃, boiling point: 140.99, 41.65(1330Pa), relative density: 0.9930, refractive index: 1.3869. Ka = 1.34×10 ⁻ ⁵. It is miscible with water. Soluble in alcohol, chloroform and ether. It has active chemical properties, is acidic, and can undergo reactions such as salt formation, esterification, and reduction.
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  • 9-09-4

Propionic acid Basic information
Product Name: Propionic acid
Synonyms: Propionic acid, extra pure, 99+% 1LT;Propionic acid, pure, 99% 1LT;Propionic acid, pure, 99% 2.5LT;PROPIONATE ION CHROMATOGRAPHY STANDARD;PROPIONIC ACID;PROPANOIC ACID;PROPANYL ACID;TRIANOIC ACID
CAS: 79-09-4
MF: C3H6O2
MW: 74.08
EINECS: 201-176-3
Product Categories: HPLC and LCMS Mobile Phase Additive;Building Blocks;C1 to C5;Carbonyl Compounds;Carboxylic Acids;Chemical Synthesis;Essential Chemicals;Inorganic Salts;Organic Building Blocks;Research Essentials;Solutions and Reagents;Fine Chemicals;Food addtive ,Feed grade;Antioxidants and Preservatives;Alkylcarboxylic Acids;Monofunctional & alpha,omega-Bifunctional Alkanes;Monofunctional Alkanes;Application Specific Reagents;Products for Amino Acid Hydrolysis;Reagents for Amino Acid Analysis;ACS Grade;Analytical Reagents;Analytical/Chromatography;79-09-4
Mol File: 79-09-4.mol
Propionic acid Chemical Properties
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 147,825
BRN 506071
Exposure limits TLV-TWA 10 ppm (~30 mg/m3) (ACGIH).
Dielectric constant 3.2(Ambient)
Stability: Stable. Incompatible with strong oxidizing agents. Flammable.
Cosmetics Ingredients Functions ANTIMICROBIAL
FRAGRANCE
PRESERVATIVE
pH ADJUSTERS
InChIKey XBDQKXXYIPTUBI-UHFFFAOYSA-N
LogP 0.33 at 25℃
Surface tension 24.07mN/m at 298.15K
CAS DataBase Reference 79-09-4(CAS DataBase Reference)
NIST Chemistry Reference Propanoic acid(79-09-4)
EPA Substance Registry System Propionic acid (79-09-4)
Test Item Specification Results
Appearance Colorless to light yellow oil liquid Followed
Assay % ≥ 99 99.81
Density (20℃) g/cm³ 0.993-0.997 0.994
Heavy metal (Pb) % ≤ 0.001 < 0.001
Boiling point ℃ 138.5 ~ 142.5 139.6
Aldehyde (propionaldehyde) % ≤ 0.05 0.01
Moisture % ≤ 0.15 0.03
Evaporation residue % ≤ 0.01 0.001
Oxide (formic acid) % ≤ 0.05 < 0.05
Pb (mg/kg) ≤ 2.0 < 2.0
As (mg/kg) ≤ 3.0 < 3.0
Conclusion Qualified PASS

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