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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Model:
9-09-4
Brand:
futurechemical
Code:
9-09-4

Product Description

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

Propionic acid 9-09-4 C3H6O2

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.