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Your Location：Home>Product Center >> Acids Compound >> Ethyl propionate
  • Ethyl propionate
Name:Ethyl propionate
CAS No:105-37-3

PRODUCT DESCRIPTION

【Name】
Ethyl propionate
【Iupac name】
ethyl propanoate
【CAS Registry number】
105-37-3
【Synonyms】
Propanoic acid ethyl ester
Propionic acid ethyl ester
ETHYL PROPIONATE
NATURAL ETHYL PROPIONATE
【EINECS(EC#)】
203-291-4
【Molecular Formula】
C5H10O2 (Products with the same molecular formula)
【Molecular Weight】
102.13
【Inchi】
InChI=1/C5H10O2/c1-3-5(6)7-4-2/h3-4H2,1-2H3
【InChIKey】
FKRCODPIKNYEAC-UHFFFAOYSA-N
【Canonical SMILES】
CCC(=O)OCC
【MOL File】
105-37-3.mol

Chemical and Physical Properties

【Appearance】
Colourless liquid with a fruity, rum-like, ethereal odour
【Density】
0.887
【Melting Point】
-73℃
【Boiling Point】
99℃
【Vapour】
7.63E-05mmHg at 25°C
【Refractive Index】
1.383-1.387
【Flash Point】
12℃
【Water】
25 g/L (15℃)
【Solubilities】
25 g/L (15 oC)
【Color/Form】
Colorless liquid
Water-white liquid
【Storage temp】
Flammables area
【Spectral properties】
Index of refraction: 1.3844 @ 20 deg C/D
IR: 4790 (Coblentz Society Spectral Collection)
NMR: 6665 (Sadtler Research Laboratories Spectral Collection)
MASS: 278 (Atlas of Mass Spectral Data, John Wiley & Sons, New York)
【Computed Properties】
Molecular Weight:102.1317 [g/mol]
Molecular Formula:C5H10O2
XLogP3:1.2
H-Bond Donor:0
H-Bond Acceptor:2
Rotatable Bond Count:3
Exact Mass:102.06808
MonoIsotopic Mass:102.06808
Topological Polar Surface Area:26.3
Heavy Atom Count:7
Formal Charge:0
Complexity:59.1
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Acceptor Count:1
Feature 3D Hydrophobe Count:1
Effective Rotor Count:3
Conformer Sampling RMSD:0.4
CID Conformer Count:42

Safety and Handling

【Hazard Codes】
F:Flammable
【Risk Statements】
R11
【Safety Statements 】
S16;S23;S24;S29;S33
【HazardClass】
3
【Safety】

Moderately toxic by ingestion and intraperitoneal routes. A skin and eye irritant. A flammable liquid. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ETHERS.
Hazard Codes?of Ethyl propionate (CAS NO.105-37-3):??FlammableF 
Risk Statements: 11?
R11: Highly flammable. 
Safety Statements: 16-23-24-29-33?
S16: Keep away from sources of ignition.?
S23: Do not breathe vapour.?
S24: Avoid contact with skin.
S29: Do not empty into drains.?
S33: Take precautionary measures against static discharges. 
RIDADR: UN 1195 3/PG 2
WGK Germany: 1

【PackingGroup 】
II
【Skin, Eye, and Respiratory Irritations】
A skin and eye irritant.
【Transport】
UN 1195
【Fire Fighting Procedures】
WATER MAY BE INEFFECTIVE.
To fight fire, use foam, carbon dioxide, dry chemical.
【Fire Potential】
A flammable liquid. A very dangerous fire and explosion hazard when exposed to heat or flame ...
【Formulations/Preparations】
Grades: Commercial, 85-90% ester content; Food Chemicals Codex
【DOT Emergency Guidelines】
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Fire or Explosion: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with "P" may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Health: May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Structural firefighters' protective clothing will only provide limited protection.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Evacuation: Large spill: Consider initial downwind evacuation for at least 300 meters (1000 feet). Fire: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Fire: Caution: All these products have a very low flash point: Use of water spray when fighting fire may be inefficient. Small fires: Dry chemical, CO2, water spray or alcohol-resistant foam. Do not use dry chemical extinguishers to control fires involving nitromethane or nitroethane. Large fires: Water spray, fog or alcohol-resistant foam. Do not use straight streams. Move containers from fire area if you can do it without risk. Fire involving tanks or car/trailer loads: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ Spill or Leak: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material. Large spills: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor; but may not prevent ignition in closed spaces.
/GUIDE 129: FLAMMABLE LIQUIDS (POLAR/WATER-MISCIBLE/NOXIOUS)/ First Aid: Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Wash skin with soap and water. Keep victim warm and quiet. In case of burns, immediately cool affected skin for as long as possible with cold water. Do not remove clothing if adhering to skin. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
【Reactivities and Incompatibilities】
... Can react vigorously with oxidizing materials.
【Other Preventative Measures】
SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.
【Protective Equipment and Clothing】
A skin and eye irritant.
【Specification】

clear colorless to pale yellow liquid
Safety Statements:16-23-24-29-33
16:Keep away from sources of ignition - No smoking
23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)
24:Avoid contact with skin
29:Do not empty into drains
33:Take precautionary measures against static discharges
【Octanol/Water Partition Coefficient】
log Kow= 1.21
【Report】

Reported in EPA TSCA Inventory.

【Disposal Methods】
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Use and Manufacturing

【Use and Manufacturing】
Methods of Manufacturing

ESTERIFICATION OF ETHYL ALCOHOL WITH PROPIONIC ACID OR PROPIONIC ANHYDRIDE
Treating ethanol with propionic acid
... Obtained in very good yields by treatment of ethanol with methylketene.
U.S. Production

(1979) 8.31X10+7 GRAMS (SALES)
(1981) PROBABLY GREATER THAN 9.08X10+5 GRAMS
(1985) Not reported
(1976) 68 metric tons
Separate statistics for this item are not published to avoid disclosure of individual company operations.

Biomedical Effects and Toxicity

【Pharmacological Action】
Exposure can cause irritation of eyes, nose and throat. May cause shortness of breath or coughing. High concentrations have a narcotic effect. May cause abdominal pain and vomiting if swallowed.

Environmental Fate and Exposure Potential

【Environmental Fate/Exposure Summary】
The rate constant for the vapor-phase reaction of ethyl propionate with photochemically-produced hydroxyl radicals is 2.14X10-12 cu cm/molecule-sec at 25 deg C(1). This corresponds to an atmospheric half-life of about 7 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm(1). A base-catalyzed second-order hydrolysis rate constant of 8.9X10-2 L/mol-sec(2) corresponds to half-lives of 2.5 yrs and 90 days at pH values of 7 and 8, respectively(3).

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