Organic phosphonates

Sca.Ie nd Sta.in Controllers. Polyacrjiates (low molecular weight) and organic phosphonates, eg, (l-hydroxyethyhdene)diphosphonic acid, prevent or control precipitation of CaCO by acting as chelating agents (qv) or dispersants (qv) to prevent excessive formation of hard scale by promoting crystal distortion. [Pg.302]

Calcium carbonate is controlled with poly(maleic acid) (26) and organic phosphonates. Dispersants designed to control silica and magnesium silicate (7,27,28) have been introduced. [Pg.151]

Organic phosphates and organic phosphonates are known as scale inhibitors. At the same time, substances in this class can be nutrients for certain bacteria. Therefore a phosphorous nutrient injection system can both prevent scales and act as a nutrient in favorite cases [903,904],... [Pg.224]

Organic phosphates Organic phosphites Organic phosphonates... [Pg.151]

Kristoff J, Guilbault GG. 1983. Application of uncoated piezoelectric crystals for the detection of an organic phosphonate. Anal Chim Acta 149 337-341. [Pg.151]

Organic phosphonates represent another class of anchoring agents, which react with zirconium hydroxide to form pillared structures. These are also referred to as molecularly engineered layered structures (MELS). Layered compounds of organic phosphonates of zirconium with the formula of Zr(RP03)2 have been rec-... [Pg.1442]

Quantitative risk assessments have been performed on a variety of flame-retardants used both in upholstered furniture fabric and foam. The National Research Council performed a quantitative risk assessment on 16 chemicals (or chemical classes) identified by the U.S. Consumer Product Safety Commission (CPSC). The results were published in 2000.88 The 16 flame-retardants included in this NRC study were HBCD, deca-BDE, alumina trihydrate, magnesium hydroxide, zinc borate, calcium and zinc molybdates, antimony trioxide, antimony pentoxide and sodium antimonate, ammonium polyphosphates, phosphonic acid, (3- [hydroxymethyl]amino -3-oxopropyl)-dimethylester, organic phosphonates, tris (monochloropropyl) phosphate, tris (l,3-dichloropropyl-2) phosphate, aromatic phosphate plasticisers, tetrakis (hydroxymethyl) hydronium salts, and chlorinated paraffins. The conclusions of the assessment was that the following flame-retardants can be used on residential furniture with minimal risk, even under worst-case assumptions ... [Pg.691]

Design of Layered Phosphonates Possessing Functionalities for Coordination to Multiply Bonded Bimetallic Cores. Solids shown in Figure 3c can be designed readily with LMPs because their galleries can be modified by pendant functionalities covalently anchored to the layers with the methods introduced by Alberti (25,55) and Dines (54-57). Reaction of organic phosphonic or arsonic acids with M4+ oxides, oxychlorides, and halides yields M(03XR)2 (X = P or As M = Ti, Zr, U, Th, and Ce) layered materials,... [Pg.255]

Amitrole heterocyclic nitrogen, triazole Ampropylfos phosphoro organic, phosphonic acid Ancymidol heterocyclic nitrogen, pyrimidine Anilazine heterocyclic nitrogen, triazine Anilofos phosphoro organic, phosphoro dithioate ANTU thiourea... [Pg.1005]

Etaconazole heterocyclic nitrogen, triazole Ethalfluralin dinitroaniline Ethametsulfuron sulfonyl urea Ethephon phosphoro organic, phosphonic acid Ethidimuron urea, thiadiazole, sulfone Ethiofencarb carbamate... [Pg.1007]

Fosetyl-aluminium phosphoro organic, phosphonate Fosmethilan phosphoro organic, phosphoro dithioate, amide... [Pg.1008]

Glufosinate phosphinate Glyodin heterocyclic nitrogen, imidazoline Glyphosate phosphoro organic, phosphonate Guazatine guanidine... [Pg.1008]

Trichlorfon phosphoro organic, phosphonate Trichloronat phosphoro organic, phosphonothioate Triclopyr heterocyclic nitrogen, pyridine Tricyclazole triazole, heterocyclic nitrogen, benzothiazole... [Pg.1012]

Elongated hematite particles were also produced in basic conditions by aging freshly precipitated ferric hydroxides at temperatures of 100°C to 200°C in the presence of small amounts of organic phosphonic acid or hydroxycarboxylic acid... [Pg.697]

Polymers containing phosphorus in the backbone are less common in practice. The polymers from this class include organic phosphates, organic phosphonates, and also polymers obtained from substituted phosphazenes such as substituted dioxyiminophosphorane [1], aminooxyiminophosphorane or diaminoiminophosphorane. [Pg.20]

Boutagy, J., Thomas, R. Olefin synthesis with organic phosphonate carbanions. Chemical Reviews (Washington, DC, United States) 1974, 74, 87-99. [Pg.603]

Ouimette, D.G. and Coffey, M.D. (1988) Quantitative analysis of organic phosphonates, phosphonate, and other inorganic anions in plants and soil by using high-performance ion chromatography. Phytopathology, 78, 1150-1155. [Pg.331]

Compagnone. R.S.. and Suarez, A., Stereoselective synthesis of methoxy substituted 2,3-dibenzyl-y-butyrolactones using organic phosphonates as intermediates. Phosphorus, Sulfur Silicon Relat. Elem., 75, 35, 1993. [Pg.485]

Unihib . [Lonza] Organic phosphonates dispersant, corroskm and scale inhibitor. [Pg.390]

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