Monopotassium phosphite CAS#13977-65-6
Monopotassium phosphite, also named potassium dihydrogen phosphite, features the molecular formula KH₂PO₃. It can function as a biocide and a complexing agent for calcium and magnesium ions in industrial circulating water systems. As an alternative to organophosphorus water treatment chemicals, it helps lower environmental pollution.
Monopotassium phosphite Chemical Properties
| English Name | Monopotassium phosphite |
| English Synonyms | MONOPOTASSIUM PHOSPHITE;Phosphorous acid dihydrogen=potassium salt;Monopotassium phosph;Mo nopotassium phosphite kh2po3;Monopotassium phosphite ISO 9001: 2015 REACH:Monopotassium phos phite,?98%;Monopotassium phosphite, Potassium dihydrogen phosphite;Potassium dihydrogen phosphite |
| CAS Number | 13977-65-6 |
| Molecular Formula | H2KO3Р |
| Molecular Weight | 120.09 |
| EINECS Number | 604-162-9 |
| form | Crystalline |
| color | colorless monoclinic hygroscopic crystals, crystalline |
| InChI | InChI=1S/K.H2O3P/c;1-4(2)3/h;1-2H/q+1;-1 |
| InChIKey | BZHCGFBZBPVRFE-UHFFFAOYSA-N |
| SMILES | P(O)(O)[O-].[K+] |
| Dissociation constant | 6.86-6.87 |
| CAS DataBase Reference | 13977-65-6(CAS DataBase Reference) |
| EPA Substance Registry System | Monopotassium phosphite (13977-65-6) |
Product Application of Monopotassium Phosphite CAS#13977-65-6
High‑Phosphorus & High‑Potassium Fertilizer:Monopotassium phosphite is a fully water‑soluble phosphorus‑potassium‑rich fertilizer. Upon application, it enables crops to rapidly take up phosphorus, potassium and multiple trace elements. It promotes shoot growth, boosts flower‑bud differentiation, supports fruit enlargement and early ripening, raises yield output and improves overall crop quality.
Alleviation of Nutrient‑Deficiency Symptoms:It mitigates typical crop nutrient‑deficiency signs including leaf yellowing, leaf malformation, small‑leaf syndrome, blossom drop and fruit cracking.
High Nutrient Availability:Monopotassium phosphite resists soil fixation, so nutrients are readily accessible for crop uptake and deliver high nutrient absorption‑utilization efficiency.
Excellent Formulation Compatibility:It barely triggers antagonistic interactions with trace‑element nutrients and features near‑neutral pH. It is compatible for tank‑mixing with most agrochemical pesticides.
Induction of Plant Defense Mechanisms:During pathogen invasion, monopotassium phosphite stimulates plant cells to synthesize lignin, thickening and hardening cell‑wall structures to hinder pathogen penetration and further spreading.
Antifungal & Antibacterial Properties:Trivalent phosphite ions exert strong inhibitory activity against fungi and bacteria, helping prevent and control crop diseases such as canker disorders.
Disease‑Control Applications:Registered as a fungicidal raw material in several overseas markets, monopotassium phosphite assists management of downy mildew, powdery mildew, black spot, phytophthora blight and root‑rot diseases.
