>> Benzyl Acetone
CAS No. 2550-26-7
Appearence: Colorless liquid
Odor Type: Floral
Refractive Index: 1.510-1.513
Boiling Point: 235-237
Flash Point: 98
Soluble In: Alcohol
Insoluble In: Water
Application: Benzyl acetone is mainly used in synthesis
of flavor and pharmaceutical
Appearance : yellow crystals
Assay : 99.00 to 100.00 %
Food Chemicals Codex Listed : No
Specific gravity : 0.98500 to 0.99100 @ 25.00 °C.
Pounds per gallon - calc. : 8.196 to 8.246
Refractive index : 1.50900 to 1.51500 @ 20.00 °C.
Boiling point : 235.00 °C. @ 760.00 mm Hg
Boiling point : 115.00 °C. @ 13.00 mm Hg
Flash point : 208.00 °F. TCC ( 97.78 °C. )
LogP (o/w) : 1.96
most important hazard(s) : Xi - Irritant
R 38 - Irritating to skin.
S 02 - Keep out of the reach of children.
S 24 - Avoid contact with skin.
S 36 - Wear suitable protective clothing.
Oral Toxicity(LD50) :
Oral-Rat [sex: M] 3200.00 mg/kg
Oral-Mouse 1590.00 mg/kg
Intraperitoneal-Mouse 583.00 mg/kg
Dermal Toxicity(LD50) : Skin-Rabbit >5000.00 mg/kg
Inhalation Toxicity(LC50) : Not determined
The emission of a single compound, benzyl acetone (BA,
4-phenyl-2-butanone), is barely detectable during the day in the
headspace of flowers of the self-compatible disturbance species
Nicotiana attenuata, but it increases dramatically (50×) in the
evening, becoming the dominant component in the floral headspace.
This striking temporal pattern of emission may be sculpted by its
potential ecological roles (e.g., synomonal and kairomonal), which
we examine here. We measured the nightly BA emissions from
individual flowers at six different branch positions on plants
receiving either self-pollen or pollen from another genotype and
calculated the nightly whole-plant emission. The first flowers
produced on a branch have a lower rate of emission than flowers
produced later on the same branch; however, cross pollination did
not influence the quantity of BA emitted from subsequently produced
flowers. Informed by these measures of whole-plant emission, we
constructed a device that released BA at a constant rate equivalent
to that of a plant with 240 open flowers (an approximate 10×
increase in emissions).
This device and a control device were
attached to 50 matched pairs of plants growing in a native
population in Utah to estimate the fitness consequences of enhanced,
constant BA emission. Plants with elevated BA emissions in the field
were browsed more frequently than control plants and produced fewer
capsules, so that lifetime seed production was reduced by 3.1%.
However, both treatment and control plants were heavily attacked by
negro bugs (Cormelina spp.) and produced light seeds with low
viabilities, representing 47% and 23% of the mass per seed and
viability, respectively, of unmanipulated plants, which flowered two
weeks later in the same population. From glasshouse experiments, we
estimated the consequences of out-crossing and attack by negro bugs
on seed production. Out-crossing did not significantly affect seed
production, seed mass or viability. In contrast, negro bug
infestation dramatically decreased seed mass and viability.
conclude that while the phenological variation in attack rates might
have obscured our ability to estimate the fitness consequences of
enhanced BA emission, the effects are likely to be dominated by
kairomonal rather than synomonal interactions for this
Benzylacetone can be prepared by hydrogenating benzylideneacetone in
the presence of a palladium catalyst on activated carbon and/or a
palladium catalyst on aluminum oxide.
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the manufacture of the controlled substances and are important to
the manufacture of the substances. For any (Control Substance)
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