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China, Chinese HS2811199090 Factory Price High Quality H3po3 Rac-Phoenicol1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Inorganic ChemicalsAcidPurity 99%High Quality
Shijiazhuang Sincere Chemicals Co., Ltd.
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Product Description CAS No.13598-36-2NamePhosphorous acidAliasrac-Phoenicol; orthophosphorus acid; PhoenicolMolecular formulaH3PO3Molecular weight82.00Melting point73.6oCDensityRelative density (water =1)1.65Vapor pressure200oC(decomposition)SolubilitySoluble in water, alcoholStabilityStableAppearance and propertiesWhite crystalline powder, garlic flavor, easy to deliquescenceDanger mark20 (acid corrosive products)Uses1.It is a raw material for the manufacture of plastic stabilizers, and is also used in the manufacture of synthetic fibers and phosphite.2.It can be used as an intermediate of glyphosate and ethephon, and can also be used to produce high-efficiency water treatment agent. Appearance and properties: White crystalline solidDensity: 1.651 g/mL at 25 °C(lit.)Melting point: 73 °CBoiling point: 200 °CFlash point: 200°CWater solubility: SOLUBLEAcidity coefficient (pKa): pK1 1.29; pK2 6.74(at 25oC)Storage conditions/storage methods: The warehouse is ventilated and dry at low temperature, and stored separately from H pore-forming agent and alkali. Production MethodIndustrial production methods include phosphorus trichloride hydrolysis and phosphite method.The hydrolysis method slowly adds water dropwise to phosphorus trichloride under stirring for hydrolysis reaction to generate phosphorous acid, which is refined Chemicalbook, cooled and crystallized, and decolorized to obtain finished phosphorous acid. Its PCI3+3H2O→H3PO3+3HCl production process produces hydrogen chloride for recycling, which can be made into hydrochloric acid.Stability Related1. It is slowly oxidized into orthophosphoric acid in the air and decomposed into orthophosphoric acid and phosphine (highly toxic) when heated to 180oC. Phosphorous acid is a dibasic acid, its acidity is slightly stronger than phosphoric acid, and it has strong reducibility, which can easily reduce Ag ions to metallic silver and sulfuric acid to sulfur dioxide. Strong hygroscopicity and deliquescence, corrosive. Can cause burns. Irritating to the skin. Placed in the air, it deliquesces and is easily soluble in water. When the temperature is higher than 160oC, H3PO4 and PH3 are generated.2. Stability: stable3. Forbidden mixture: strong alkali4. Avoid contact conditions: hot, humid air5. Aggregation hazard: no aggregation6. Decomposition product: phosphorus oxideUses1.It is a raw material for the manufacture of plastic stabilizers, and is also used in the manufacture of synthetic fibers and phosphite.2.It can be used as an intermediate of glyphosate and ethephon, and can also be used to produce high-efficiency water treatment agent.Additional InformationProperties: white or light yellow crystal, with garlic flavor and easy deliquescence. Melting point (oC): 73 ~ 73.8 Boiling point (oC): 200 (decomposition) Relative density (water = 1): 1.65 Octanol/water partition coefficient: 1.15 Solubility: Soluble in water and ethanol.
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