NOVELTY - Phosphorus containing compounds selected from 2-((chloro(hydroxy)phosphoryl)methylamino)acetic acid (3), (cyanomethylamino)methylphosphonic dichloride (4), and (cyanomethylamino)methylphosphonochloridic acid (5), are new.    USE - For preparation of glyphosate, chloromethyl methyl phenylphosphorus dichloride (claimed), and phosphine flame retardant.    ADVANTAGE - The process improves the defects that the original synthetic technology of the products is high in cost and large in discharge amount of the wastewater; and achieves the industrial design standard of the clean production.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) preparation of glyphosate which comprises compounding phosphorus tri-halides, formaldehyde, glycine or aminoacetonitrile as the raw material, by: (A) preparing organic acid (X) which comprises organic carboxylic such as benzoic acid, chloroacetic acid, dichloroacetic acid, tri-chloric acid, nitrobenzoic acid, benzoic acid halide or dialkyl phosphoric acid, where the acidity of the organic carboxylic is greater than that of acetic acid, preparing organic solvent (RJ) which comprises ethyl ether, methylal, acetonitrile, trimethyl phosphate, alkyl phosphonic acid di-ester, glycol di-alkyl ether, chloroform, propyl ether, isopropyl ether, butyl ether or isodibutyl ether, mixing X solute with RJ solvent to prepare 10-20% of solution, (B) adding 10-20% of solution into a four-opening reaction bottle, stirring under nitrogen protection or isolation of air and water, controlling at 15-75 degrees C, adding glycine or aminoacetonitrile with equal mole with the solute X, and adding paraformaldehyde or trioxymethylene with equal mole with the solute X, stirring for 3-15 hours, and adding phosphorus trichloride, sequentially stirring for 3-48 hours, cooling to room temperature, standing for 0.5-2 hours, filtering, drying and obtaining (Cl)2P(=O)-CH2NH2CH2COOH (2) or compound (4), reacting compounds (2) or (4) with hydroxy compound with equal mole to obtain compounds (3) or (5), and (C) mixing compounds (2)-(5) compounds with water, 50-70% alcohol aqueous solution or 5-15% ammonia aqueous solution, controlling the temperature at 5-60 degrees C, stirring for 3-72 hours to obtain raw material of glyphosate or aqueous ammonium salt of glyphosate, or mixing compounds (4) or (5) with 20-30% hydrochloric acid aqueous solution or 5-30% ammonia aqueous solution, controlling the temperature at 60-110 degrees C and hydrolyzing for 3-26 hours to obtain raw material of glyphosate or aqueous ammonium salt of glyphosate, or combining phosphorus tri-halides, formaldehyde, glycine or aminoacetonitrile by: (a) adding solid carboxylic acid such as chloroacetic acid, benzoic acid, dichloroacetic acid, trichloroacetic acid, nitrobenzoic acid or benzoic acid halide in 5-10 times the amount of water, stirring, controlling the temperature at 20-60 degrees C, adding glycine and aminoacetonitrile having equal mole with chloroacetic acid, and formaldehyde aqueous solution in an amount of more than 2 times mole of chloroacetic acid, stirring for 1-12 hours, evaporating water and excess formaldehyde at high vacuum to give hydroxymethyl glycine chloroacetic acid salt solid, (b) adding 3-5 times of the amount of RJ solvent, controlling the temperature at 20-60 degrees C, dropping phosphorus trichloride with equal mole, stirring for 4-28 hours, cooling, standing, filtering, drying to obtain compounds (2)-(5) solids and (c) hydrolyzing with 50-70% alcohol aqueous solution or strong base aqueous solution to obtain raw material of glyphosate;    (2) Preparation of methyl propenylphosphonic dichloride (10) or phenyl propenylphosphonic dichloride (11) which comprises: (A) using liquid such as ethane, ethyl ether, propyl ether, benzene, methylbenzene and petroleum ether excluding hydrogenb chloride gas to prepare solution containing 40-60% phosphorus trichloride, adding the solution in a four-opening reaction bottle, stirring, controlling the temperature at 0-30 degrees C, dropping methyl alcohol or phenol having equal mole with phosphorus trichloride, stirring for 2-8 hours to generate methoxy phosphorus dichloride (8) or benzyl chlorine-based phosphorus dichloride (9) and (B) evaporating the solvent at high vacuum, evaporating hydrogen chloride, heating to 70-110 degrees C, heating to 120-280 degrees C, keeping the temperature for 4-48 hours, and generating methoxy phosphorus dichloride (10) or benzyl chlorine-based phosphorus dichloride (11) and combining phosphorus tri-halides and alkyl halide to prepare methylphosphinic di-chloride compound by reacting phosphorus trichloride with chloromethane to generate the corresponding phosphonium salt (12) and reacting the phosphonium salt (12) with water or methyl alcohol in equal mole;    (3) generating dimethyl methylphosphonate (6) in one-step reaction by using phosphorus trichloride and methyl alcohol as raw materials by adding asolution containing 40-60% phosphorus trichloride in a four-opening reaction bottle, controlling the temperature at 70-120 degrees C, dropping methyl alcohol, refluxing, discharging the generated hydrogen chloride gas, reacting for 6-26 hours to generate 90-95% dimethyl methylphosphonate (6) and 1/5 of by-product polymer which is red yellow and regards dimethyl methylphosphonate and methylphosphinic chloride as the monomer, where the polymer is an innovative poly-phosphonate flame retardant having better performance than that of dimethyl methylphosphonate (6), and    (4) preparation of chloromethyl methyl phosphonous dichloride which comprises using ethyl ester, propyl ether, dimethyl methylphosphonate, dimethyl phosphate, trimethyl phosphate, glycol dimethyl ether or methylal as solvent, to prepare solution containing 10-40% phosphorus trichloride, putting the solution in a four-opening reaction bottle, stirring, controlling the temperature at 15-90 degrees C, putting trioxymethylene or paraformaldehyde having equal mole with phosphorus trichloride, and stirring for 4-28 hours.