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CAS 105-37-3

CAS 105-37-3 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 105-37-3
CAS 105-37-3PubChem CID 7749

Ethyl Propionate

Ethyl propionate is a propanoate ester of ethanol. It has a role as a metabolite. — ChEBI

IUPAC name
ethyl propanoate
Molecular formula
C5H10O2
Molecular weight
102.13 g/mol
Exact mass
102.068079557 Da
XLogP3
1.2
Topological polar surface area
26.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

Propanoic acid, ethyl esterPropionic etherPropionic esterPropionic acid, ethyl esterPropionate d'ethyleFEMA No. 2456Ethylester kyseliny propionoveAT9K8FY49U
16 more reported names
NSC-8848CHEBI:41330RefChem:5815203-291-4EthylpropionatePropionic acid ethyl esterEthyl n-propionateNSC 8848Propionic acid-ethyl esterEthyl ester of propanoic acidPropanoic acid ethyl esterEthyl Propionate(Propionic Acid Ethyl Ester)WE(2:0/3:0)ethylpropanoateEthyl propionate (natural)Propionate d'ethyle [French]
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:41330

ethyl propionate

A propanoate ester of ethanol.

Formula
C5H10O2
Average mass
102.133 g/mol
Monoisotopic mass
102.06808 Da
Formal charge
0
  • propanoate ester — is a (CHEBI:36243)
  • metabolite — has role (CHEBI:25212)
  • metabolite — has role (CHEBI:25212)
  • propanoate ester — is a (CHEBI:36243)
Additional curated names
ethyl propanoateEthyl n-propionatepropionic acid ethyl ester
Cross-references from this source
  • CAS: 105-37-3 — ChemIDplus
  • CAS: 105-37-3 — NIST Chemistry WebBook
  • REGISTRY_NUMBER: 506287 — Reaxys
  • MANUAL_X_REF: CA1 — PDBeChem
  • MANUAL_X_REF: HMDB0030058 — HMDB

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2020-07-07. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match7749

Attributed physical-property, hazard, environmental and use annotations.

  • First Aid: Get medical attention.; INHALATION: Remove to fresh air. If breathing has stopped, give artificial respiration. If breathing is difficult, give oxygen.; EYES: Flush with water for at least 15 min., lifting lids occasionally. Contact lenses should not be worn when working with this chemical.; SKIN: Remove contaminated clothing and shoes. Wash with soap and water. (USCG, 1999) Source: CAMEO Chemicals
  • ERG2024, Guide 129 (Ethyl propionate): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • NFPA Health Rating: 0 - Materials that, under emergency conditions, would offer no hazard beyond that of ordinary combustible materials. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Fire Rating: 3 - Liquids and solids that can be ignited under almost all ambient temperature conditions. Materials produce hazardous atmospheres with air under almost all ambient temperatures or, though unaffected by ambient temperatures, are readily ignited under almost all conditions. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Instability Rating: 0 - Materials that in themselves are normally stable, even under fire conditions. Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Bioconcentration: An estimated BCF of 1.7 was calculated for ethyl propionate(SRC), using a log Kow of 1.21(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low. Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 12(SRC), determined from a structure estimation method(2), indicates that ethyl propionate is expected to have very high mobility in soil(SRC). Volatilization of ethyl propionate from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 2.5X10-4 atm-cu m/mole(SRC), from its vapor pressure, 35.8 mm Hg(4), and water solubility, 1.92X10+4 mg/l(3). The potential for volatilization of ethyl propionate from dry soil surfaces may exist(SRC) based upon a vapor pressure of 35.8 mm Hg(4). Biodegradation in soil is expected to be an important environmental fate process because of the presence of an easily biodegraded ester functional group(5). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 12(SRC), determined from a structure estimation method(2), indicates that ethyl propionate is not expected to adsorb to suspended solids and sediment in water(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 2.5X10-4 atm-cu m/mole(SRC), from its vapor pressure, 35.8 mm Hg(4), and water solubility, 19,200 mg/l(7). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 6 hrs and 5 days, respectively(SRC). According to a classification scheme(5), an estimated BCF of 1.7(SRC), from its log Kow of 1.21(6) and a regression-derived equation(9), suggests the potential for bioconcentration in aquatic organisms is low. Biodegradation in water is expected to be an important environmental fate process because of the presence of an easily biodegraded ester functional group(8). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), ethyl propionate, which has a vapor pressure of 3.58X10+1 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase ethyl propionate is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 7 days(SRC), calculated from its rate constant of 2.14X10-12 cu cm/molecule-sec at 25 °C(3). Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
EMBL-EBI ChEBIExact match2026-08-31
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 105-37-3

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How CAS 105-37-3 is used on this site

CAS 105-37-3 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 105-37-3 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.