| The organic phosphorus, the staple scale inhibitors for water treatment, are chemical stability, could bear higher temperature and higher pH. They are obviously having threshold effect, synergism and still are used at present. The statistics show nearly 100,000 tons of phosphorus be used to producing water treatment reagent every year in our country. It causes destroying to the environment that the phosphorus chemical compound will become waste liquid and discharge at last, so the use of phosphorus has been limited for the laws and regulations. The friendly environment water treatment reagents have became the mainstream of development of water treatment trade in this century, focal point that research and development transfer to these green water treatment reagents that without phosphorus and having good biodegradation accordingly too.In this paper, 1,2,3-propanetriol reacts with hydrochloric acid to prepare α-chlorine glycerine. The pure product is obtained by distillation two times under reduced pressure, with 87.0% yield. The structure of the product has been characterized by IR, 1HNMR. 3-Chloro-2-hydroxy propionic acid be oxidized as light green liquid 3-Chloro -1,2,3-propane -diol in the aqueous solution of the nitric acid, with 67.4% yield, and has signified its structure by IR, 1HNMR and element analysis. Sodium 2,3-epoxypropionate has been produced by 3-chloro-2-hydroxy propionic acid react on sodium hydroxide, then epoxysuccinate-2,3-epoxypropionate copolymer (PEPC) has been synthesized bycopolymerization in the presence of the initiator--lithium hydroxide. The copolymer'sstructure and intermediate's structure were confirmed by IR, 1HNMR. A series of PEPC was synthesized under different reaction condition, and their performance of scale inhibition was evaluated by static test. The zinc salt stabilization and the ferric oxide dispersion of PEPC were also evaluated in this paper. The following conclusions can be deduced from the results of the tests. (1) The PEPC capacity in calcium carbonate scale inhibition decreased compared with PESA, and shooting that not more carboxylic acid group Moles contained in the polymer of amount added would be increase performance inhibition with it is expected. The calcium carbonate scale inhibition efficiency of PEPC3,PEPC5 ~ PEPC8 were 74.56%, 79.07%, 83.94%, 85.35% and 88.46% when their concentration in aqueous system was 20mg/L. (2) The calcium sulfate scale inhibition efficiency of PEPC3, PEPC5 ~ PEPC8 were 95.63%, 96.09%, 96.15%, 97.07% and 97.72% when their concentration in aqueous system was 10mg/L. (3) PEPC capacities in calcium phosphate scale inhibition, zinc salt stabilization and ferric oxide dispersion are almost same with PESA.Epoxypropanesulfonate-epoxypropionate copolymers(PEPS) were obtained from epoxidation and coploymerization of 3-chloro-2-hydroxypropionic acid and sodium 3-chloro-2- hydroxypropysulfonate under sodium hydroxide. The copolymer's structure and intermediate's structure were confirmed by IR, 1HNMR. A series of PEPS were synthesized under varied reaction conditions, and their performance of scale inhibition was evaluated by static test. The zinc salt stabilization and the ferric oxide dispersion of PEPS were also evaluated in this paper. The following conclusions can be deduced from the results of the tests. (1) The calcium carbonate scale inhibition efficiency of PEPS2, PEPS5 ~ PEPS8 were 60.01%, 74.93%, 80.01%, 84.81% and 87.26% when their concentration in aqueous system was 20mg/L. When the mole ratio of 3-chloro-2-hydroxypropionic acid vs sodium 3-chloro-2- hydroxypropysulfonate is 3:1, the calcium carbonate scale inhibition efficiency of the copolymerize PEPS, is the best, and efficiency is 83.54% when concentration in aqueous system was 10mg/L. (2) The calcium phosphate scale inhibition efficiency of PEPS2, PEPS5 ~ PEPS8 were 65.48%, 60.38%, 53.49%, 36.16% and 31.48% when their concentration in aqueous system was 10mg/L. (3) The calcium sulfate scale inhibition efficiency of PEPS2, PEPS5 ~ PEPS8 were 86.73%, 85.52%, 89.28%, 91.63% and 96.72% when their concentration in aqueous system was 10mg/L. (4) PEPS capacities in zinc salt stabilization and ferric oxide dispersion will be more effective when more sulfuric acid group Moles contained in the polymer of amount added. This proves that as to the group of carboxylic acid, the group of sulfuric acid is the effective functional group in zinc salt stabilization and ferric oxide dispersion. To do more researches on this topic is very useful.
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