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Phosphines

Amino Trimethylene Phosphonic Acid

(6419-19-8)
ATMP or aminotris(methylenephosphonic acid) is a phosphonic acid with chemical formula N(CH2PO3H2)3. It has chelating properties. It can be synthesized from the Mannich-type reaction of ammonia, formaldehyde, and phosphorous acid.

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2-Phosphonobutane-1,2,4-Tricarboxylic Acid

(37971-36-1)
Used as corrosion and scale inhibitor to treat industrial water. This product has excellent complexing ability with Ca2+, Zn2+, Cu2+, Mg2+ plasma. Suitable for use in the pH range of 7.0 to 9.5. It can be operated under high temperature, high hardness and high alkalinity conditions. The concentration ratio of circulating cooling water can be increased to more than 7. It is a good corrosion and scale inhibitor, widely used in the anti-scaling treatment of circulating cooling water systems and oilfield water injection systems; a good corrosion and scale inhibitor, widely used in the anti-scaling treatment of circulating cooling water systems and oilfield water injection systems. Used as a corrosion and scale inhibitor to treat industrial water

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Alendronate Sodium

(121268-17-5)
Alendronate is suitable for the treatment of osteoporosis in postmenopausal women, to prevent hip and spine fractures (vertebral compression fractures), and for osteoporosis in men to increase bone mass.

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Ethylenebis (Nitrilodimethylene) Tetraphosphonic Acid

(1429-50-1)
EDTMP or ethylenediamine tetra(methylene phosphonic acid) is a phosphonic acid. It has chelating and anti corrosion properties. EDTMP is the phosphonate analog of EDTA. It is classified as a nitrogenous organic polyphosphonic acid.

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Hydroxyphosphono-Acetic Acid

(23783-26-8)
1. Used as corrosion inhibitor. HPAA has excellent corrosion inhibition performance, especially in low hardness, low alkalinity, and strong corrosive water, it shows extremely strong corrosion inhibition effect. HPAA has a good chelation with divalent ions. It can be used as a metal ion stabilizer to effectively stabilize Fe2+, Fe3+, Mn2+, Al3+ plasma in water to reduce corrosion and scaling; HPAA can significantly reduce the deposition of calcium carbonate and silica. Good scale inhibition performance, but HPAA has slightly worse scale inhibition performance for calcium sulfate scale. In order to avoid the decomposition of HPAA by the oxidizing bactericide, a protective agent can be used, but it is less affected by residual chlorine (0.5-1.0 mg/L) in the cooling water system of intermittent chlorination. The combined use of HPAA and zinc salt has obvious synergistic corrosion inhibition effect. The recommended concentration is generally 5 ~ 30mg/L. Dosing equipment should be resistant to acid corrosion. 2.HPAA is mainly used as a metal cathode corrosion inhibitor. It is widely used in the corrosion and scale inhibition of circulating cooling water systems in steel, petrochemical, power, medicine and other industries. It is suitable for use as a corrosion inhibitor for low hardness, easily corrodible water quality in southern China. HPAA The compounding effect with zinc salt is better. Organic corrosion and scale inhibitors composed of low molecular weight polymers have excellent performance.

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Diethylenetriaminepenta (Methylene-Phosphonic Acid)

(15827-60-8)
It is suitable for alkaline circulating cooling water as scale and corrosion inhibitor without adjusting pH value, and can be used for oil field water injection and cooling water with high barium carbonate content. Excellent corrosion and scale inhibitor for circulating cooling water and boiler water, especially suitable for power plants The closed-circuit and alkaline circulating cooling water of the ash washing water system is used as a scale and corrosion inhibitor without adjusting PH, and can be used as a scale and corrosion inhibitor for oilfield water injection and cooling water, boiler water with high barium carbonate content, and peroxide And a stabilizer of chlorine dioxide fungicide. Use this product alone in the compound medicament without adding dispersant, and the dirt accumulation is still small. This product is used as a raw material for the synthesis of antibiotics in medicine, used in the synthesis of high-efficiency herbicides in the pesticide industry, and as a raw material for the synthesis of organic chlorides.

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Triphenylphosphine Oxide

(791-28-6)
Used as organic synthesis and pharmaceutical intermediates, catalysts, extractants, etc.; used in fluorescent anti-counterfeiting powders, etc.; this product is mainly used as solvents, catalysts, corrosion inhibitors; also used in the synthesis of rubber accelerators and other fine chemicals, and Used as a polyurethane catalyst, a catalyst for the synthesis of aminobenzyl penicillin and hydroxybenzyl penicillin. Oxidation with hydrogen peroxide can produce N-methyl morpholine oxide. Acts in organic synthesis intermediates, drug delivery intermediates, catalysts and extractants

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(1-Hydroxyethylidene)Bis-Phosphonic Acid Tetrasodiumsalt

(3794-83-0)
It can complex with a variety of metal ions. Used as scale inhibitor in cooling water and boiler water treatment. Good heat resistance. 200℃ still has a good effect. It can also be used as corrosion inhibitor, non-cyanide electroplating additive. Uses HEDP•Na4 is the sodium salt of HEDP and an excellent inhibitor of calcium carbonate scale. HEDP•Na4 is mainly used for low-pressure boiler water treatment, circulating water treatment, industrial and municipal cleaning water, and metal corrosion inhibition for swimming pool sterilization. HEDP•Na4 is a white powder solid, easily soluble in water, not absorbing moisture, convenient for transportation, and suitable for use under severe cold conditions. HEDP•Na4 is an organic phosphonate scale and corrosion inhibitor. It can form stable complexes with iron, copper, zinc and other metal ions, and can dissolve oxides on the metal surface. It still has a good corrosion and scale inhibition effect at 250℃. HEDP•Na4 is widely used in electric power, chemical industry, metallurgy, and chemical industry; it can be used as a raw material for pesticide intermediates and organic synthesis raw materials

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Glufosinate-Ammonium

(77182-82-2)
Organophosphorus herbicide, glutamine synthesis inhibitor, non-selective contact herbicide. It has a certain systemic effect and can be used for weeding in orchards, vineyards, and non-arable land. It can also be used for potato fields to control annual or perennial dicotyledons, gramineous weeds and sedges, such as S. sylvestris, crabgrass, barnyard grass, etc. Setaria, wild wheat, wild corn, orchardgrass, fescue, serrata, fluffy grass, ryegrass, reed, bluegrass, wild oats, bromegrass, porcini, lamella, small wild sesame, solanum, Chrysanthemum, creeping grass, cut bentgrass, grass, field forget-me-not, bermudagrass, amaranth, etc. The amount used depends on the crop and weeds, and the amount used per hectare is 1 to 2 kg or more, such as raspberries and ferns for preventing forests and alpine pastures. The usage amount is 1.5-20kg/hm2. Used in orchards, vineyards, non-arable land, potato fields, etc. to prevent and control annual and perennial dicotyledonous and gramineous weeds, such as sagegrass, crabgrass, barnyard, wild barley, ryegrass, setaria, golden foxtail, Wild wheat, wild corn, perennial gramineous weeds and sedges, such as duck buds, tricornis, fescue, etc.

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Tri(o-tolyl)phosphine

(6163-58-2)
As a ligand, it is used in coupling reaction; Heck reaction catalyst, organic intermediate. Use of ligands for the direct amination of alcohols catalyzed by ruthenium Ligands for the amination of alcohols catalyzed by ruthenium.

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Phosphine is a general term for phosphorus hydrides and their alkyl and aryl substituents. Among them, relatively stable trialkyl and triaryl substituents have been widely used in industry. Phosphines can form a large number of coordination compounds with various metals, have a catalytic effect on many chemical reactions, and have been applied in industry.

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