W-Propyl acetate

VALERIANIC ACID n CH,(CH,),COOH (w Propyl acetic acid — Pentane acid) when shaken with water at 16° two layers are formed. 

Solvent residues from printing and adhesives have the potential to cause food tainting. Typical solvents used in printing with characteristic, easily detectable odors are aliphatic esters, such as ethyl acetate, isopropyl acetate, and w-propyl acetate, the alcohols isopropyl alcohol and w-propyl alcohol and hydrocarbon mixtures, particularly aromatics. Regular tests are carried out by printers of food packaging to ensure that the concentrations of solvent residues are maintained below the odor and tainting threshold levels. The most widely used analytical technique to measure the levels of solvent residues is GC head-space analysis. Portions of the packaging are placed in sealed vials or other suitable containers and heated... 

The comparison of the minimum attainable TAC for these three systems, as well as the acetic acid dehydration system without any entrainer, is shown in Table 9.13. From the table, one can observe that the no-entrainer system has the highest TAC and the isobutyl acetate system is most favorable for this feed composition and product specification requirements. The TAC for the isobutyl acetate system is only about 55% of the no-entrainer system, which shows that a large saving can be made by using the isobutyl acetate system. Notice that this finding is in general agreement with the industrial applications. (See patents by Costantini et al. and Parten and Ure ). The above two patents also found isobutyl acetate as a favorable entrainer for the separation of acetic acid and water. Another earher patent by Othmer found w-propyl acetate to be useful as an entrainer for this system. The patent by Mitsui Petrochemical Industries found n-butyl acetate to be... 

Isopropyl acetate Methyl acetate Methyl chloroacetate l-Methoxy-2-propyl acetate Methyl glycol acetate 5-Norbornen-2-yl acetate w-Pentyl acetate w-Propyl acetate Vinyl acetate... 

Before leaving this section, it should be pointed out that the type III flowsheet is probably the most general configuration for acetic acid esterification. In addition to BuAc and AmAc systems, the production of w-propyl acetate, isobutyl acetate, isoamyl acetate, and -hexyl acetate also fall into this category when economic factors arc taken into consideration. 

A typical elution profile the separation of saturated esters by gas-liquid chromatography 1. methyl formate 2. methyl acetate 3. ethyl formate 4. ethyl acetate 5. -propyl formate 6. iso-propyl acetate 7. w-butyl formate 8. sec-butyl acetate 9. iso-butyl acetate 10. n-butyl acetate... 

Alderson, N.L., Bhethanabotla, V.R., and Campbell, S.W. Total vapor pressure measurements for 2-ethoxyethanol with methyl acetate, ethyl acetate, propyl acetate, and ethyl propionate at 313.15 K and for 2-ethoxyethanol with methyl formate at 308.15 K, /. Chem. Eng. Data, 48(l) 92-96, 2003. 

The ketones are readily prepared, for example, acetophenone from benzene, acetyl chloride (or acetic anhydride) and aluminium chloride by the Friedel and Crafts reaction ethyl benzyl ketones by passing a mixture of phenylacetic acid and propionic acid over thoria at 450° and w-propyl- p-phenylethylketone by circulating a mixture of hydrocinnamio acid and n-butyrio acid over thoria (for further details, see under Aromatic Ketones, Sections IV,136, IV,137 and IV,141). 

ACETIC ACID, w-PROPYL ESTER (109-60-4) Forms explosive mixture with air (flash point 58°F/14°C). Violent reaction with strong oxidizers. Incompatible with strong acids, nitrates, strong acids. Attacks some plastics, rubber, and coatings. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

This means the saponification equivalent must equal the molecular weight of the ester. N-propyl acetate (C5H10O2) has M.W. = 102, Therefore, the saponification equivalent of n-propyl acetate is 102. 

Fig. 16.5 Ternary solubility diagram for n-propanol/water/n-propyl acetate (% w/w, 30°C).

Chem. Descrip. Epoxy resin sol n., 1-methoxy-2-propyl acetate Uses Epoxy for high- rformance industrial bake coatings, coil coatings Features High m.w. rec. for formulation with converting resins such as urea-formaldehyde, melamine, and/or phenolics Properties Gardner 4 max. color dens. 8.90 Ib/gal (sol n.) vise. Z wtV epoxide 2220 Seta flash pt. 117 F 45% solids in 1-methoxy-2-propyl acetate. 

Acetaldehyde diphenethyl acetal CAS 122-71-4 EINECS/ELINCS 204-568-2 Synonyms 1,1-Bis (phenethyloxy) ethane Uses Fragrance in cosmetics Acetaldehyde dipropyl acetal CAS 105-82-8 EINECS/ELINCS 203-335-2 Synonyms Acetaldehyde di-n-propyl acetal 1,1-Dipropoxyethane Dipropyl acetal Propane, 1,1 -(ethylidenebis (oxy)) bis- Propyl acetal n-Propyl acetal Empirical C8H18O2 Properties Colorless liq. fresh green chrysanthemum leafy herbal odor sol. in ethanol insol. in water m.w. 146.23 sp.gr. 0.826-0.829 dens. 6.873-6.898 Ib/gal b.p. 143-150 C ref. index 1.39700-1.4000 (20 C)... 

Chloro-4-methoxyphenyl)-1,1-dimethylurea N-(3-Chloro-4-methoxyphenyl)-N, N -dimethylurea. See Metoxuron Chloromethoxy propyl mercuric acetate CAS 1319-86-4 Synonyms Mercury, aceto(chloromethoxypropyl)- Mercury, acetoxy (chloromethoxypropyl)- Mercury, (chloromethoxy) propyl-, acetate Empirical CeHuCIHgOs Properties M.w. 367.21 Uses Preservative for water-based paints Trade Name Synonyms Troysan CMP Acetate t[Troy http //www.troycorp.com]... 

Synonyms Hydrocinnamic acetate 3-Phenyl-1-propanol acetate Phenylpropyl acetate 3-Phenyl propyl acetate Empirical C11H14O2 Formula C6H5CH2CH2CH2OOCCH3 Properties Colorless liq., spicy floral odor sol. in alcohol insol. in water m.w. 178.25 dens. 1.012 flash pt. > 212 F ref. index 1.494 Toxicology LD50 (oral, rat) 4700 mg/kg mildly toxic by ing. TSCA listed Precaution Combustible liq. 

CAS 70657-70-4 EINECS/ELINCS 274-724-2 Synonyms Acetic acid, 2-methoxypropyl ester 2-Methoxy-1 -acetoxypropane 2-Methoxypropyl acetate (2-Methoxy-1-propyl) acetate 2-Methoxypropyl-1 -acetate 2-Methoxypropylacetate-1 Empirical C6H12O3 Properties M.w. 132.16 Toxicology TCLo (inh., femaie rat, 6-15 days after conception) 2710 ppm reproductive effector... 

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