Light yellow crystals
Crystallise the acid from EtOH or water. [Beilstein 9 H 666, 9 IV 2424.]
Plant growth regulator: An agent for thinning fruit sets in apples, pears, olives
and some citrus. Induces root formation on cuttings
and transplants. Inhibits fruit drops. Not currently registered
in EU countries (pending). Registered for use in
the U.S. and Canada.
ChEBI: A naphthylacetic acid substituted by a carboxymethyl group at position 1.
1-naphthaleneacetic acid (NAA, also named as α-naphthaleneacetic acid) belongs to a class of organic compounds of naphthalenes, which contain a naphthalene moiety of two fused benzene rings. NAA is a synthetic auxin plant hormone. It is used as a plant growth regulator to control preharvest fruit drop, flower induction and fruit thinning in various crops such as apples, potatoes, olives, and citrus fruits. It is used as a rooting agent and used for the vegetative propagation of plants from stem and leaf cutting. It is also used for plant tissue culture and as herbicide. Applied as a dust or spray it delays dissolution of the abscission layer, retarding the fruit drop. The effect of NAA on plant growth is greatly dependent on the time of admission and concentration. When used after four weeks, NAA stimulates shoot growth, while full-time use limits growth. When used in a 4-week pulse, adventitious root growth is greatly increased.
AGRONAA®; ALCO® NAA; ALPHASPRA
®; AMCOTONE® APPL-SET®; CELMONE®;
DESTRUXOL®; DIP’N GROW®; FRUITONE®;
GOLDENGRO®; HORMEX®; KLINGTITE®; LIQUISTIK
®; NAA 800®; NAFUSAKU®; NIAGARASTIK
®; NU-TONE®; PARMONE®; PHYMONE®;
PIMACOL-SOL®; PLANOFIX®; PLUCKER®;
PRIMACOL®; RHIZOPON B ROOTING POWDER;
ROOTONE® (component, with Indole-3-butyric acid and
1-Naphthaleneacetamide); STAFAST®; STIK®; STOPDROP
®; TEKKAM®; TIPOFF®; TRANSPLANTONE®
(component, with 1-Naphthaleneacetamide); TREHOLD