1-Naphthaleneacetic acid

1-Naphthaleneacetic acid

IUPAC name	2-(1-Naphthyl)acetic acid
Other names	1-Naphthaleneacetic acid α-Naphthaleneacetic acid Naphthylacetic acid NAA
Identifiers
CAS number	86-87-3
SMILES	C1=CC=C2C(=C1) C=CC=C2CC(=O)O
Properties
Molecular formula	C₁₂H₁₀O₂
Molar mass	186.2066 g/mol
Appearance	White powder
Melting point	135 °C
Solubility in water	0.38 g/L (17 °C)
Acidity (pK_a)	4.24 (25 °C)
Hazards
MSDS	External MSDS
Related Compounds
Related compounds	Auxins Indole-3-acetic acid
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

1-Naphthaleneacetic acid, commonly abbreviated NAA, is an organic compound with the formula C₁₀H₇CH₂CO₂H. This colourless solid is soluble in organic solvents. It features a carboxylmethyl group (CH2CO2H) linked to the "1-position" of naphthalene. NAA is a 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.