PGR
Gibberellic Acid (GA3) 90% TC Powder
Plant Growth Regulator GA3 Powder Technical Grade Raw Material for Agrochemical Formulators
Gibberellic Acid 90% TC (CAS No. 77-06-5) is a high-purity, white to off-white crystalline powder plant growth regulator (PGR) used to stimulate cell elongation, break seed dormancy, and enhance fruit set across major agricultural crops. Designed as a raw material for agrochemical formulators producing SP, EC, WDG, and tablet formulations, it is effective at low concentrations ranging from 10 to 100 ppm. Supplied in 25 kg fiber drums with inner PE or 1 kg aluminum foil bags, our minimum order quantity (MOQ) is 25 kg, with a standard lead time of 10 days post-payment for delivery to Shanghai Port for global shipment.
Technical specifications
- Product Name
- Gibberellic Acid
- Other Names
- GA3, Gibberellin
- Appearance
- White Crystal Powder
- Assay
- 90%
- CAS No.
- 77-06-5
- Molecular formula
- C19H22O6
- Molecular weight
- 346.37
Package
25kg Drum
Key benefits
- Accelerates Seed Germination & Breaks Dormancy: Promotes α-amylase synthesis in seeds, rapidly breaking dormancy in potatoes, rice, barley, and ornamental plants to achieve uniform emergence.
- Stimulates Cell Elongation & Vegetative Growth: Triggers cell division and internode elongation, significantly boosting biomass in leafy vegetables, sugarcane, pasture grasses, and hybrid rice seed production.
- Enhance Fruit Set & Development: Prevents flower and fruit drop, improves fruit setting rate in seedless grapes, citrus, pears, and apples, and enhances fruit size, marketability, and yield potential.
- Regulates Flowering & Maturation: Delays senescence in citrus rinds to prevent pre-harvest fruit drop and extends the harvest window while controlling crop flowering timing.
- Abiotic Stress Relief: Helps crops recover from low-temperature stress, herbicide phytotoxicity, and environmental shocks by stimulating plant metabolic activity.
Suggested dosage & application
Recommendations for Agrochemical Formulators
When using Gibberellic Acid 90% TC (CAS 77-06-5) as a raw material for commercial formulations (such as 10% SP, 4% EC, 20% TB, or 10% WDG):
- Solubility & Solvent Selection: GA3 TC has low water solubility (≈ 5g/L at 20°C). Formulators should pre-dissolve the technical powder in organic solvents like ethanol, isopropanol, or acetone. For liquid products (EC/SL), blend with suitable non-ionic surfactants to maintain dispersion upon dilution.
- pH & Chemical Stability: GA3 maintains maximum stability in acidic to neutral conditions (pH 3.0 - 6.5), but rapidly hydrolyzes in alkaline environments (pH > 7.5). Avoid using alkaline fillers or mixing with Bordeaux mixture and lime sulfur.
- Moisture Management: Maintain carrier moisture content strictly below 1% in solid formulations (SP, WDG, TB) using non-reactive fillers (e.g., sodium sulfate) to prevent hydrolytic degradation over shelf life.
Recommendations for Direct Field Application
Dilute formulated products with water prior to spraying. Field application rates typically range from low concentrations of 0.5 ppm up to 50 ppm depending on target crop requirements:
- Hybrid Rice Seed Production: Foliar spray 20–50 ppm at the 10%–30% heading stage to promote panicle exertion and seed setting.
- Seedless Grapes: Dip clusters or spray 20–50 ppm post-bloom (7–10 days after petal fall) to boost berry enlargement and fruit set.
- Citrus (Navel Oranges, Mandarins): Foliar spray 10–30 ppm during full bloom to reduce fruit drop, or prior to coloration to delay rind senescence.
- Seed Potatoes: Soak tubers in a 0.5–2 ppm solution for 10–15 minutes to break seed dormancy and promote uniform sprouting.
- Leafy Vegetables (Celery, Spinach): Foliar spray 10–30 ppm 2–3 weeks before harvest to accelerate stem elongation and boost yield.
- Malting Barley: Treat steeping grains with a 0.2–1 ppm solution to activate α-amylase enzymes for uniform germination.
Related products
Frequently asked questions
01What is 90% GA3 TC, and how does it differ from finished GA3 formulations?
90% GA3 TC (Technical Grade) is the raw, high-purity chemical powder containing $\ge 90\%$ active Gibberellic Acid. It is intended for industrial agrochemical formulators and fertilizer manufacturers to process into end-use products like 4% EC, 10% SP, or 20% TB. It is not directly applied to crops without prior dissolving, formulating, or diluting.
02How do I dissolve GA3 90% TC powder effectively?
Because GA3 TC has low solubility in pure water, it should first be pre-dissolved in a small amount of organic solvent (such as ethanol, isopropyl alcohol, or acetone) before adding it to the water spray solution. Alternatively, formulators add surfactant systems to manufacture water-dispersible finished products.
03What is the shelf life and correct storage condition for Gibberellic Acid 90% TC?
GA3 TC has a shelf life of 2 years when stored in its original, unopened packaging. It should be kept in a cool, dry, dark, and well-ventilated warehouse away from direct sunlight, heat sources, and strong alkaline materials. Keep containers tightly sealed to prevent moisture absorption.
04Can GA3 TC formulations be mixed with other agricultural inputs?
Yes, GA3 can be tank-mixed with most neutral or acidic insecticides, fungicides, and foliar fertilizers (such as amino acids or potassium dihydrogen phosphate). However, it must never be mixed with alkaline substances (e.g., copper hydroxide, lime), as high pH degrades the active hormone structure.
05What are your supply capabilities, MOQ, and shipping lead times for bulk orders?
Our standard Minimum Order Quantity (MOQ) is 25 kg. We supply GA3 90% TC in 25 kg fiber drums with double-layer PE bags or inner 1 kg foil pouches. Upon order confirmation and payment receipt, goods are dispatched to Shanghai Port within approximately 10 days ready for global sea or air freight boarding.
06Is this a ready-to-use product or a technical-grade material?
It is a TC grade for formulators; formulate into SL/SP. GA3 90% TC dissolves in methanol, ethanol or acetone and is typically formulated into 4% EC, 10%/20% tablets (TB) or 20% SP. Keep the final formulation pH between 3.0 and 5.0 — GA3 degrades rapidly in alkaline conditions.
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