NPAC
n-Propyl acetate
CAS: 109-60-4
Molecular Formula: C5H10O2
NPAC - Names and Identifiers
| Name | n-Propyl acetate |
| Synonyms | NPAC octanpropylu PROPYL ACETATE Propyl Acetate 1-propylacetate N-PROPYL ACETATE N-BUTYLE BROMURE PROPYL ETHANOATE n-Propyl acetate 1-Propyl acetate 1-Acetoxypropane octanpropylu(polish) Acetic acid n-propyl ester |
| CAS | 109-60-4 |
| EINECS | 203-686-1 |
| InChI | InChI=1/C5H10O2/c1-3-4-7-5(2)6/h3-4H2,1-2H3 |
NPAC - Physico-chemical Properties
| Molecular Formula | C5H10O2 |
| Molar Mass | 102.13 |
| Density | 0.888 g/mL at 25 °C (lit.) |
| Melting Point | -95 °C (lit.) |
| Boling Point | 102 °C (lit.) |
| Flash Point | 55°F |
| JECFA Number | 126 |
| Water Solubility | 2g/100 mL (20 ºC) |
| Solubility | water: soluble |
| Vapor Presure | 25 mm Hg ( 20 °C) |
| Vapor Density | 3.5 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.889 (20/4℃) |
| Color | APHA: ≤15 |
| Odor | Mild fruity. |
| Exposure Limit | TLV-TWA 200 ppm (～840 mg/m3) (ACGIH,MSHA, and OSHA); TLV-STEL 250 ppm(～1050 mg/m3) (ACGIH); IDLH 8000 ppm(NIOSH). |
| Merck | 14,7841 |
| BRN | 1740764 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Highly flammable. May react violently with oxidizing agents. May form explosive mixtures with air. Incompatible with strong oxidizing agents, acids, bases. |
| Explosive Limit | 1.7%, 37°F |
| Refractive Index | n20/D 1.384(lit.) |
| Physical and Chemical Properties | Colorless liquid with mild fruit aroma. melting point -92.5 ℃ boiling point 101.6 ℃ relative density 0.8878 refractive index 1.3844 flash point 14 ℃ solubility, ketones and hydrocarbons are miscible and slightly soluble in water. |
| Use | A large number of coatings, inks, Nitro paint, varnish and a variety of excellent resin solvent, also used in flavor and fragrance industry. |
NPAC - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36 - Irritating to the eyes R66 - Repeated exposure may cause skin dryness or cracking R67 - Vapors may cause drowsiness and dizziness |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S29 - Do not empty into drains. S33 - Take precautionary measures against static discharges. |
| UN IDs | UN 1276 3/PG 2 |
| WGK Germany | 1 |
| RTECS | AJ3675000 |
| TSCA | Yes |
| HS Code | 2915 39 00 |
| Hazard Note | Irritant/Highly Flammable |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LD50 in rats, mice (mg/kg): 9370, 8300 orally (Jenner) |
NPAC - Upstream Downstream Industry
| Downstream Products | Poly(vinyl alcohol) |
NPAC - Reference Information
| FEMA | 2925 | PROPYL ACETATE |
| olfactory Threshold | 0.24ppm |
| Henry's Law Constant | 5.54 at 37 °C (static headspace-GC, van Ruth et al., 2001) |
| LogP | 1.4 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | propyl acetate is slightly soluble in water, soluble in alcohol, ketone, Ester, oil and other organic solvents, it is a colorless, clear liquid with an aromatic odor. |
| content analysis | determined by gas chromatography (GT-10-4) using a non-polar column method. |
| toxicity | GRAS(FEMA). |
| usage limit | FEMA(mg/kg): Soft drink 4.0; Cold drink 16; Candy 12; Baked goods 14. Moderate limits (FDA § 172.515,2000). |
| Use | use as a food flavor GB 2760-1996 specifies the permitted use of food flavors. Mainly used in the preparation of pear, honey, banana, apple, alcoholic beverages and gooseberry flavor, also used as a solvent of fruit flavor. This product is a mild quick-drying agent for flexographic printing inks and gravure printing inks, especially for olefin reduction and polyamide film printing. It is also used as a solvent for nitrocellulose, chlorinated rubber and thermo-reactive phenolics. Propyl acetate has a slight fruit aroma. Diluted pear-like aroma. Natural products are found in bananas, tomatoes, repots, etc. China GB2760-86 regulations for the permitted use of edible spices. Mainly used in the preparation of pear and gooseberry flavor, also used as a solvent of fruit flavor. n-propyl acetate is an effective solvent for many synthetic resins, such as ethyl cellulose, nitrocellulose, styrene, methacrylate resin, etc. N-propyl acetate is commonly used in organic synthesis and is used as a solvent for coatings, printing inks, etc. N-propyl acetate is also a dehydrating agent commonly used in industry. A large number of used as coatings, inks, Nitro paint, varnish and a variety of excellent resin solvent, also used in flavor and fragrance industry. |
| production method | is obtained by esterification of acetic acid and propanol. Add propanol, acetic acid and sulfuric acid to the glass-lined reaction pan, heat and reflux for 10h, cool and neutralize with sodium methoxide to pH = 7-8, dry with calcium chloride and carry out atmospheric fractionation, collect the fraction at 105-115 ℃, it is the finished product. obtained by esterification and distillation of N-propanol and acetic anhydride in the presence of sulfuric acid, washing with saturated salt water and sodium bicarbonate solution, followed by distillation after dehydration with anhydrous sodium sulfate. |
| category | flammable liquid |
| toxicity grade | low toxicity |
| Acute toxicity | oral-rat LD50: 9370 mg/kg; Oral-mouse LD50:8300 mg/kg |
| stimulation data | Skin-rabbit 500 mg mild; eye-rabbit 100 mg/24 h mild |
| explosive hazard characteristics | explosive when mixed with air |
| flammability hazard characteristics | in case of open flame, high temperature, flammable oxidant; Combustion stimulus smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Occupational Standard | TWA 840 mg/m3; Tel 1050 mg/m3 |
| spontaneous combustion temperature | 842 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentrations | 1,700 ppm |
Last Update：2024-04-09 15:16:45
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