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Basic
Information of 1-Naphthalene acetic acid
Chemical Name: 1-Naphthalene acetic acid
Cas No.: 86-87-3
Molecular Formula: C12H10O2
Chemical Structure:
1-Naphthaleneacetic acid
(NAA) is an organic compound with the formula C10H7CH2CO2H. This colorless
solid is soluble in organic solvents. It features a carboxylmethyl group
(CH2CO2H) linked to the "1-position" of naphthalene. NAA is a
synthetic plant hormone in the auxin family and is an ingredient in many
commercial plant rooting horticultural products; it is a rooting agent and used
for the vegetative propagation of plants from stem and leaf cutting. It is also
used for plant tissue culture.
The hormone NAA does not occur naturally,
and, like all auxins, is toxic to plants at high concentrations. In the United
States, under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA),
products containing NAA require registration with the Environmental Protection
Agency (EPA) as pesticides.
NAA is widely used in agriculture for
various purposes. It is considered to be only slightly toxic but when at higher
concentrations it can be toxic to animals. This was shown when tested on rats
via oral ingestion at 1000–5900 mg/kg. NAA has been shown to greatly increase
cellulose fiber formation in plants when paired with another phytohormone
called gibberellic acid. Because it is in the auxin family it has also been
understood to prevent premature dropping and thinning of fruits from stems. It
is applied after blossom fertilization. Increased amounts of it can actually
have negative effects however, and cause growth inhibition to the development
of plant crops. It has been used on many different crops including apples,
olives, oranges, potatoes, and various other hanging fruits. In order for it to
obtain its desired effects it must be applied in concentrations ranging from 20–100
µg/mL. NAA present in the environment undergoes oxidation reactions with
hydroxyl radicals and sulphate radicals. Radical reactions of NAA was studied
by using pulse radiolysis technique. Hydroxyl adduct radical was formed as the
intermediate during the reaction of hydroxyl radical with NAA. The intermediate
Naphtyl methyl radical was formed during the reaction of sulphate radical anion
with NAA.
In micro propagation of various plants NAA
is typically added to a media containing nutrients essential to the plants
survival. It is added to help induce root formation in various plant types. It
can also be applied by spraying it onto plants and which is typical in
agricultural use. It is prohibited in many areas to use it in high
concentrations due to the health concerns towards humans and other animals.
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If you are interested in 1-Naphthalene acetic acid, click here to send an inquiry!
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References:
https://en.wikipedia.org/wiki/1-Naphthaleneacetic_acid
https://www.ncbi.nlm.nih.gov/pubmed/9697346
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC366374/
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