Why It Matters
Specialty ag, turf and greenhouse buyers source phosphorous acid and potassium phosphite as phosphite (PO3) nutritional inputs, bought in drums and totes. Phosphite is a distinct, highly mobile reduced-phosphorus ion that moves both up and down in the phloem. (Position strictly as plant nutrition; any disease-control claim triggers pesticide registration and must clear legal-review.)
Solution Approach
Specialty ag, turf and greenhouse buyers source phosphorous acid and potassium phosphite as phosphite (PO3) nutritional inputs, bought in drums and totes. Phosphite is a distinct, highly mobile reduced-phosphorus ion that moves both up and down in the phloem. (Position strictly as plant nutrition; any disease-control claim triggers pesticide registration and must clear legal-review.) RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Application Workflow
1
Application & Agronomic Review
Define the use (crop input, adjuvant, soil amendment, post-harvest) and the agronomic, regulatory, and tank-mix requirements.
2
Input & Grade Selection
Match the surfactant or adjuvant, nutrient source, chelate, or formulation aid to the active, water quality, and label.
3
Compatibility & Rate Trial
Confirm tank-mix compatibility, dose, and stability, and size packaging (jugs, drums, totes, bulk) to the season and logistics.
4
Field Validation
Validate efficacy and crop safety in field trials, and lock the spec and supply plan for the season.
Recommended Chemistries (4)
Phosphorous acid (H3PO3)
CAS 13598-36-2
Diprotic acid that dissociates to phosphite (HPO3/PO3) ions, the mobile reduced-P species supplied in phosphite nutrition programs
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Mono/di-potassium phosphite
CAS 13977-65-6
Neutralized potassium salt of phosphorous acid giving systemic, pH-buffered phosphite plus K in a tank-friendly form
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Mono/di-ammonium phosphite
Ammonium phosphite salt supplying phosphite plus N for foliar and fertigation blends
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Phosphoric acid
CAS 7664-38-2
Acids & Salts
pH adjuster
1805 (Phosphoric acid, solution) · Class Fully oxidized orthophosphate (PO4) acid that contrast product, it is the conventional non-phosphite P and a fertigation pH-down acid
Melting Point: 42 °C Boiling Point: > 130 °C at 760 mmHg Density: 1.892 at 25 °C
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