What is Naphthalene Acetic Acid CAS 86-87-3?

Naphthalene Acetic Acid CAS 86-87-3, also called NAA or 1-naphthaleneacetic acid, is a synthetic auxin plant growth regulator. It is supplied as a white to off-white crystalline powder and is used mainly for rooting, fruit retention and fruit thinning.

What are the main agricultural uses of NAA?

It promotes adventitious root formation in cuttings, prevents pre-harvest fruit drop, thins excess fruit in apples and pears, and induces uniform flowering in pineapple. It is also used to improve fruit set and grain fill in vegetables and cereals.

How is the 98% technical grade dissolved before field application?

The pure acid form is not directly soluble in cold water. Dissolve it first in a small amount of ethanol, acetone or dilute alkaline solution, then dilute that concentrate with water to the required spray concentration.

Why is NAA often combined with indole-3-butyric acid?

NAA and indole-3-butyric acid have complementary rooting effects. Combining them can improve rooting rate and root quality, especially for difficult-to-root woody and herbaceous cuttings.

What concentration effect should be considered with NAA?

NAA is highly active at low use rates. Lower concentrations promote rooting and fruit retention, while higher concentrations inhibit growth and are used for fruit thinning, so overdosing may cause phytotoxicity.

Naphthalene Acetic Acid CAS 86-87-3

Naphthalene Acetic Acid (NAA, 1-naphthaleneacetic acid), CAS 86-87-3, is a synthetic auxin plant growth regulator supplied as 98% technical grade for rooting, fruit retention, fruit thinning and flowering control. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 86-87-3
Synonyms: 1-Naphthaleneacetic acid, Alpha-naphthylacetic acid, NAA, 1-Naphthylacetic acid
Einecs: 201-705-8
Molecular Formula: C₁₂H₁₀O₂
Grade: Technical Grade (98% TC)
Package: 1kg Aluminum Foil Bag / 25kg Fiber Drum

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Product Description

Naphthalene Acetic Acid, CAS 86-87-3, also known as NAA or 1-naphthaleneacetic acid, is the synthetic auxin C₁₂H₁₀O₂; the EC/EINECS number is 201-705-8.

Synonyms: 1-naphthaleneacetic acid; alpha-naphthylacetic acid; NAA; 1-naphthylacetic acid.

CAS: 86-87-3.

Molecular formula: C₁₂H₁₀O₂.

Molecular weight: 186.21 g/mol.

EC number: 201-705-8.

It is a white to off-white crystalline powder, supplied as 98% technical concentrate.

It is a synthetic auxin that stimulates cell division, cell elongation and tissue differentiation.

The pure acid is not directly soluble in cold water; dissolve first in ethanol, acetone or dilute alkaline solution.

It promotes adventitious root formation in cuttings of tea, grapes, roses and timber trees.

It prevents pre-harvest fruit drop and thins excess fruit in apples and pears.

It induces uniform flowering in pineapple and improves fruit set and grain fill in vegetables and cereals.

It is often combined with indole-3-butyric acid to improve rooting of difficult-to-root species.

Confirm assay, appearance, melting point, loss on drying, residue on ignition, free acid and solubility.

Store in a cool, dry, ventilated warehouse in light-resistant containers, below 30 °C and away from fire and heat.

Keep separate from food, beverages, grains and animal feed; lower concentrations promote growth while higher concentrations are used for thinning.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Naphthalene Acetic Acid CAS 86-87-3?

A: Naphthalene Acetic Acid CAS 86-87-3, also called NAA or 1-naphthaleneacetic acid, is a synthetic auxin plant growth regulator. It is supplied as a white to off-white crystalline powder and is used mainly for rooting, fruit retention and fruit thinning.
Q:
How does NAA work in plants?

A: NAA enters plants through leaves, tender stems or seeds and moves to active growing sites. It stimulates cell division, cell elongation and tissue differentiation, acting like the natural auxin indole acetic acid but with greater stability.
Q:
What are the main agricultural uses of NAA?

A: It promotes adventitious root formation in cuttings, prevents pre-harvest fruit drop, thins excess fruit in apples and pears, and induces uniform flowering in pineapple. It is also used to improve fruit set and grain fill in vegetables and cereals.
Q:
How is the 98% technical grade dissolved before field application?

A: The pure acid form is not directly soluble in cold water. Dissolve it first in a small amount of ethanol, acetone or dilute alkaline solution, then dilute that concentrate with water to the required spray concentration.
Q:
Why is NAA often combined with indole-3-butyric acid?

A: NAA and indole-3-butyric acid have complementary rooting effects. Combining them can improve rooting rate and root quality, especially for difficult-to-root woody and herbaceous cuttings.
Q:
What concentration effect should be considered with NAA?

A: NAA is highly active at low use rates. Lower concentrations promote rooting and fruit retention, while higher concentrations inhibit growth and are used for fruit thinning, so overdosing may cause phytotoxicity.

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