PGR
S-ABA (S-Abscisic Acid) 90% TC Powder
(+)-Abscisic acid, S-(+)-ABA, ABA — natural (+)-enantiomer from fermentation. TC grade for formulators; formulate into SL/SP.
S-ABA ((+)-Abscisic Acid) 90% TC Powder, CAS 14375-45-2, is a natural plant growth regulator produced by fermentation. It closes stomata to cut water loss, improves drought, cold and salinity tolerance, and promotes anthocyanin accumulation for grape berry coloration at veraison. Foliar 10–100 mg/L a.i. depending on purpose. TC grade for formulators; formulate into SL/SP (10%–25% SL/AS or SG/WSP). MOQ 25kg; lead time about 10 working days to Shanghai port; OEM and batch COA available; 24-month shelf life.
Technical specifications
- Product Name
- S-ABA
- Other Names
- Abscisic acid, S-Abscisic Acid, (+)-Abscisic acid, (+)-cis-trans Abscisic Acid
- Appearance
- White Powder
- Assay
- 90%
- CAS No.
- 21293-29-8
- Molecular formula
- C15H20O4
- Molecular weight
- 264.32
Package
25kg Drum
Key benefits
- Closes stomata within hours: cuts transpiration and water loss under drought and heat.
- Improves abiotic stress toleranc: faster recovery from cold, salinity and drought stress.
- Promotes berry coloration: drives anthocyanin accumulation in table grapes at veraison for more uniform color.
- Reduces transplant shock: improves seedling survival and establishment after transplanting.
- Natural (+)-enantiomer from fermentation: significantly more active than synthetic racemic (±)-ABA.
- Formulation synergy: combines with GA3 and 6-BA in fruit-quality and coloring programs.
Suggested dosage & application
For formulators
TC grade; formulate into SL/SP. S-ABA 90% TC is a white to off-white crystalline powder, sparingly soluble in water; dissolve in methanol, ethanol or acetone, or neutralize with dilute alkali to form a soluble salt. Typical end products are 10%–25% SL/AS or water-soluble granules (SG/WSP). Avoid alkaline formulation pH and UV light — S-ABA isomerizes and loses activity under strong light. Every shipment includes a batch COA.
For direct field use
Foliar 10–25 mg/L a.i. for drought, cold and salinity stress mitigation; 25–100 mg/L a.i. on grape clusters at the start of veraison for berry coloration; 5–10 mg/L a.i. as a seedling root dip to reduce transplant shock. Apply in the evening or on cloudy days (UV degrades ABA); do not tank-mix with alkaline products.
Related products
Frequently asked questions
01What is the CAS number of S-ABA?
S-ABA (natural (+)-abscisic acid) has CAS number 14375-45-2. Note that synthetic racemic (±)-ABA is a different material (CAS 21293-29-8) with much lower biological activity. We supply the natural (+)-enantiomer, 90% technical grade (TC), with a batch COA for every shipment.
02What does S-ABA do, and at what rates is it used?
S-ABA is the plant stress hormone: it closes stomata to cut water loss, improves tolerance to drought, cold and salinity, and promotes anthocyanin accumulation in grapes. Typical foliar rates are 10–100 mg/L of active ingredient depending on purpose — 10–25 mg/L for stress mitigation, 25–100 mg/L on grape clusters at the start of veraison for berry coloration.
03Is this a ready-to-use product or a technical-grade material?
It is a TC grade for formulators; formulate into SL/SP. S-ABA 90% TC dissolves in methanol, ethanol or acetone, or in dilute alkali as a soluble salt, and is typically formulated into 10%–25% SL/AS or water-soluble granules (SG/WSP). Avoid alkaline pH and UV light during formulation and storage.
04What is the MOQ and lead time?
MOQ is 25 kg. Typical lead time is about 10 working days to Shanghai port; OEM packaging and batch COA are available.
05How should S-ABA be stored?
Store in a cool, dry, dark place away from direct sunlight, in the original sealed packaging. Shelf life is 24 months.
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