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1-Naphthylacetic acid
Also known as: NAA, 1-Naphthalene acetic acid
NAA is a broad-spectrum, highly effective auxin-like plant growth regulator; its primary advantage lies in its potent ability to promote the formation and development of adventitious roots. Additionally, at low concentrations, it effectively preserves flowers and fruit while accelerating fruit enlargement, whereas at high concentrations, it serves as an agent for flower and fruit thinning.
Technical specifications
- Product Name
- 1-Naphthylacetic acid
- Other Names
- NAA, 1-Naphthalene acetic acid
- Appearance
- White to Off -White Powder
- Assay
- 98%
- CAS No.
- 86-87-3
- Molecular formula
- C12H10O2
- Molecular weight
- 186,21
Package
25kg Drum
Key benefits
- Potent Root Promotion NAA strongly stimulates the formation of adventitious roots, significantly boosting rooting rates for cuttings and survival rates after transplanting.
- Dual-Action Regulation At low concentrations, it effectively preserves flowers and fruit, whereas at high concentrations, it acts as an agent for flower and fruit thinning.
- Fruit Enlargement and Ripening It significantly promotes fruit cell expansion; while accelerating fruit enlargement and improving quality, it also effectively regulates the crop's ripening period.
Suggested dosage & application
- For Formulators & Manufacturers As a 98% Technical Grade concentration, this product must be formulated before broad field application. Solubility: NAA 98% TC is soluble in ethanol or acetone, but poorly soluble in water. For direct water solubility, manufacturers prefer Sodium 1-naphthaleneacetate (NAA-Na) to formulate commercial rooting powders or liquid concentrates. Formulation Note: NAA is highly stable under light and heat. Maintain a neutral to slightly alkaline pH if using the sodium salt form (NAA-Na) to ensure complete water solubility and prevent precipitation. Synergistic Blends: Universally co-formulated with IAA or IBA (typically 1:1 or 2:1 ratios) to create premium commercial rooting products.
- Reference Field Application Rates For standard foliar spraying, the general field application dosage ranges from 5 to 20 mg/L (ppm), depending on the specific crop and growth stage. For Rooting & Cutting: Soak the basal end of cuttings in a 10 to 50 mg/L solution for 2 to 12 hours, or use a quick-dip at 500 to 1000 mg/L for 5 seconds. To Prevent Fruit Drop: Spray fruit trees (such as apples or citrus) at 10 to 20 mg/L approximately 14 to 21 days before harvest to significantly reduce pre-harvest fruit drop. For Fruit Thinning: Apply a 5 to 15 mg/L foliar spray 1 to 2 weeks post-bloom to eliminate excess fruitlets and improve overall harvest quality. To Ensure Optimal Efficiency: Spray evenly over the target areas; avoid overlapping sprays as excess concentration can reverse the effect and cause unintended fruit thinning or leaf curling.
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