Naphthalene Acetic Acid CAS 86-87-3

Naphthalene Acetic Acid (NAA) is a white, crystalline powder that acts similarly to the naturally occurring auxin, Indole Acetic Acid (IAA), but with greater stability and effectiveness.

Key Characteristics:

• Mechanism: It enters the plant through leaves, tender skin, and seeds. It is transported to active growing sites where it stimulates cell division and tissue differentiation.
• Solubility Note: The pure acid form (CAS 86-87-3) is not directly soluble in cold water. It must be dissolved in a small amount of alcohol, acetone, or alkaline solution (like Sodium Hydroxide) before being diluted with water for application.
• Synergy: It is often formulated with Indole-3-Butyric Acid (IBA) to create powerful rooting compounds for difficult-to-root plant species.

Physicochemical Properties

The following specifications are based on the standard 98% Technical Concentrate (TC) export grade.

Applications

1. Rooting Promotion:
   • Applied to the base of cuttings (dipping or soaking) to induce rapid root formation in tea, grapes, roses, and timber trees.
2. Fruit Thinning & Anti-Drop:
   • Apples & Pears: Used for thinning excess fruit early in the season to improve fruit size.
   • Pre-Harvest: Sprayed weeks before harvest to prevent premature fruit drop, significantly increasing marketable yield.
3. Flowering Control:
   • Used in pineapples to induce uniform flowering, allowing for synchronized harvest.
4. Yield Enhancement:
   • Prevents hollow seeds in vegetables and increases the weight of grains in crops like wheat and rice.

Storage Conditions

• Environment: Store in a cool, dry, and well-ventilated warehouse.
• Light: Sensitive to light. Store in light-resistant (opaque) containers.
• Temperature: Keep separate from fire and heat sources. Recommended storage temperature is below 30°C.
• Isolation: Do not store or transport with food, beverages, grains, or animal feed.

Safety Precautions

• Handling: NAA is an organic acid and can cause irritation. Avoid direct contact with skin and eyes.
• Inhalation: Do not breathe dust. Use local exhaust ventilation.
• PPE: Wear protective gloves, safety goggles, and a dust mask (N95 or equivalent) during handling.
• First Aid:
  • Eyes: Rinse immediately with plenty of water for at least 15 minutes.
  • Skin: Wash off with soap and water.
• Toxicity: Low toxicity to humans but highly active on plants. Follow dosage instructions carefully to avoid phytotoxicity (burning of crops).