4CPA (4-Chlorophenoxyacetic Acid) CAS No.:122-88-3 Plant Growth Regulator
Shenzhen Soyoung is a trusted global supplier of high-purity agricultural chemicals and plant growth regulators. Our 4-Chlorophenoxyacetic Acid (4-CPA, CAS 122-88-3) is manufactured under strict quality control standards to deliver maximum efficacy for commercial growers, agricultural distributors, and formulation manufacturers worldwide.
4-CPA is an auxin-like synthetic plant growth regulator. It acts by promoting flower bud differentiation, increasing fruit set rate, inhibiting pre-harvest fruit drop, and accelerating fruit expansion—ensuring higher yield and better crop quality.
Prevents Abscission: Significantly reduces flower and fruit drop caused by unfavorable weather conditions (such as low or high temperatures).
Improves Fruit Setting: Increases fruit set percentage, particularly in Solanaceae crops like tomatoes, peppers, and eggplants.
Accelerates Growth & Ripening: Promotes fruit enlargement, leads to seedless fruit development (parthenocarpy) in select crops, and shortens harvest cycles.
Cost-Effective Agrochemical: Low dosage requirement delivers high ROI for large-scale agricultural operations.
| Parameter | Specification |
|---|---|
| Product Name | 4-Chlorophenoxyacetic acid (4-CPA) |
| CAS Number | 122-88-3 |
| EINECS No. | 204-581-3 |
| Chemical Formula | C₈H₇ClO₃ |
| Molecular Weight | 186.59 |
| Appearance | Off-white to white crystalline powder |
| Assay / Purity | ≥98.0% TC |
| Melting Point | 157.0℃ - 159.0℃ |
| Loss on Drying | ≤1.0% |
| Solubility | Sparingly soluble in water; readily soluble in ethanol, acetone, and organic solvents. |
| Standard Packaging | 1 kg/aluminum foil bag, 25 kg/cardboard drum, or customized per request |
4-CPA is extensively applied across diverse horticultural and field crops:
Tomatoes & Peppers: Prevents blossom drop and promotes uniform fruit development during cool spring or early hot summer periods.
Grapes & Berries: Improves cluster setting and enhances yield quality.
Pineapples & Tree Fruits: Regulates growth and prevents unseasonal fruit shedding.
Cucurbits (Cucumbers, Zucchini): Encourages fruit setting under greenhouse condition.
Notice: Dosage should be adjusted based on crop variety, growth stage, and ambient climate conditions.
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1 Tomatoes (Blossom Spraying / Dipping):
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Concentration: 10 – 30 mg/L (ppm) solution.
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Method: Spray or dip flowers during the blooming period when 2–3 flowers per cluster open. Avoid spraying directly on young leaves or growing tips.
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2 Grapes:
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Concentration: 15 – 30 mg/L (ppm) solution.
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Method: Spray young clusters post-flowering to enhance fruit set rate.
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Packaging: 1 kg/foil bag, 25 kg/drum, or tailored OEM solutions.
Storage Conditions: Store in a cool, dry, and well-ventilated warehouse. Keep sealed tightly away from direct sunlight, moisture, heat sources, and strong oxidizers.
Shelf Life: 24 months when stored under standard conditions.
Strict Quality Assurance: Complete Batch COA (Certificate of Analysis), SDS, and TDS available upon request.
Stable Supply Chain: Robust production capacities guaranteeing reliable supply for seasonal farming demands.
Global Shipping & Logistics: Expertise in air, sea, and express logistics for seamless international customs clearance.
Flexible OEM / Custom Services: Customized purity, liquid formulations, or retail-ready packaging supported.
Looking for a reliable bulk 4-CPA (CAS 122-88-3) manufacturer and export partner? Contact Shenzhen Soyoung today to obtain the latest price list, technical documentation, or sample request.
Email: info@soyoungcn.com
WhatsApp / Phone: [+86 18922860084]