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Benzyl Acetate

(CAS#: 140-11-4)

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Benzyl acetate (CAS number 140-11-4) is an organic compound with the molecular formula C9H10O2. It is the ester formed by condensation of benzyl alcohol and acetic acid.

Benzyl acetate is found naturally in many flowers. It is the primary constituent of the essential oils from the flowers jasmine, ylang-ylang and tobira. It has pleasant sweet aroma reminiscent of jasmine. Consequently, it is used widely in perfumery and cosmetics for its aroma and in flavorings to impart apple and pear flavors.

Benzyl acetate is also used as a solvent in plastics and resin, cellulose acetate, nitrate, oils, lacquers, polishes and inks.

Benzyl acetate is used primarily as a component of perfumes for soaps and as a flavoring ingredient. As a flavoring ingredient, it is found in a variety of baked goods, soft and hard candy, various beverages, frozen dairy, and chewing gum products. Benzyl acetate is also a naturally occurring component of traditional foods, such as tomatoes, apples, mushrooms, and strawberries. The Consumption Ratio (CR), which compares the average intake of added flavoring materials to the quantities consumed as components of traditional foods, indicates that benzyl acetate is consumed about as much as a flavor ingredient as it is as a constituent of traditional foods. Its reported consumption volume of 22,500 kg in 1970 drew the interest of the NTP in testing and evaluating the toxicity of benzyl acetate.

Chronology

1964: FDA approved benzyl acetate as a flavoring ingredient in foods.

1965: FEMA expert panel judged benzyl acetate to be GRAS.

1980: FEMA expert panel evaluated the available data and affirmed the previous GRAS status.

Pre-1986: NTP conducted toxicity and carcinogenicity investigations of benzyl acetate (>99% pure). Positive trends for several types of neoplasms, none of which were statistically significant or dose-related, were noted. These positive trends included acinar-cell adenomas of the exocrine pancreas in F344/N male rats; neoplasms of the preputial gland; hepatocellular adenomas in mice of each sex; and squamous cell papillomas or carcinomas of the forestomach in male mice. No evidence of carcinogenicity was found for female F344/N rats.

1982: Reviewers of benzyl acetate NTP draft technical report were in agreement with the studies' conclusions, with only minor modifications. One reviewer believed that the known metabolites of benzyl acetate were non-mutagenic and likely not carcinogenic.

1983: Draft NTP technical report again reviewed with increased concern for the quantitative and qualitative limitations of the study.

General Information

CAS: 140-11-4
Molecular Weight: 150.18
Molecular Formula: C9H10O2

Specifications:

Assay (GC), %: 99.0 minimum
Acidity, w/w, %: 0.06 maximum(as acetic acid)
Water, (K-F), %: 0.1 maximum

Typical Properties

Physical State: Liquid
Flash Point,; C.C., ?F 216
Freezing/Melting Point: -51℃
Boiling Point: 213℃ @ 760 mm Hg
Specific Gravity: 1.06 @ 25℃
Vapor Pressure: 102 mm Hg @ 134℃
Vapor Density: 5.1

Structure: