China OEM P-Toluenesulfonyl Isocyanate - Manufacturer Good Price Phosphorous Acid CAS:13598-36-2 – INCHEE

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China OEM P-Toluenesulfonyl Isocyanate - Manufacturer Good Price Phosphorous Acid CAS:13598-36-2 – INCHEE Detail:

Description

Phosphorous acid, H3PO3, is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is as an intermediate in the preparation of other phosphorous compounds. Because preparation and uses of “phosphorous acid” actually pertain more to the major tautomer, phosphonic acid, it is more often referred to as “phosphorous acid”.Phosphorous acid has the chemical formula H3PO3, which is best expressed as HPO(OH)2 to show its diprotic character.

Synonyms

Phosphorous acid, extra pure, 98%;

Phosphorus trihydroxide;phosphorustrihydroxide;

Trihydroxyphosphine;PHOSPHOROUSACID,REAGENT;

Phosphonsure;Phosphorous acid, 98%, extra pure;AURORA KA-1076

Applications of Phosphorous Acid

1.Phosphorous acid is used to produce the fertilizer phosphate salt like potassium phosphite, ammonium phosphite and calcium phosphite. It is actively involved in the preparation of phosphites like aminotris(methylenephosphonic acid) (ATMP), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic Acid (PBTC), which find application in water treatment as a scale or corrosive inhibitor. It is also used in chemical reactions as a reducing agent. Its salt, lead phosphite is used as PVC stabilizer. It is also used as a precursor in the preparation of phosphine and as an intermediate in the preparation of other phosphorus compounds.
2.Phosphorous acid (H3PO3, orthophosphorous acid) may be used as one of the reaction components for the synthesis of the following:
α-aminomethylphosphonic acids via Mannich-Type Multicomponent Reaction
1-aminoalkanephosphonic acids via amidoalkylation followed by hydrolysis
N-protected α-aminophosphonic acids (phospho-isosteres of natural amino acids) via amidoalkylation reaction
3. Industrial uses：This collector was developed recently and was used primarily as specific collector for cassiterite from ores with complex gangue composition.On the basis of the phosphonic acid, Albright and Wilson had developed a range of collectors mainly for flotation of oxidic minerals (i.e. cassiterite, ilmenite and pyrochlore). Very little is known about the performance of these collectors. Limited studies conducted with cassiterite and rutile ores showed that some of these collectors produce voluminous froth but were very selective.

Specification of Phosphorous Acid

Compound	Specification
Appearance	White Crystal powder
Assay(H₃PO₃)	≥98.5%
Sulphate(SO₄)	≤0.008%
Phosphate(PO₄)	≤0.2%
Chloride(Cl)	≤0.01%
Iron(Fe)	≤0.002%

Packing of Phosphorous Acid

25kg/Bag

Storage: Preserve in well-closed, light-resistant, and protect from moisture.

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