Hydroxypropyl starch ether HPS First, the technical indicators: hydroxypropyl starch ethers (HPS) is a natural plant as raw material, through modification, highly etherification, then spray dried to obtain a white fine powder, without increasing plasticizer. It is completely different from the domestic starch or modified starch. Second, the application areas: as a cement-based products, gypsum-based products and calcium ash admixture products. Admixture with other buildings have good compatibility. And hydroxypropyl methyl cellulose ether (HPMC) with the use of thickening can play a role in promoting internal structure, with a better crack resistance and improve workability. By adding modified starch ether can significantly reduce the amount of HPMC added. Third, the application features: 1, a good fast thickening capacity; medium viscosity, there is some water retention; 2, the amount of small, low added amount that can achieve high results; 3, to improve the ability of anti-falling material ; 4, to improve the operating performance of the material, making the operation more smooth. 5, to extend the opening hours of material; recommendation applies to the following materials: 1, all kinds of (cement, gypsum, calcium-based gray), the wall putty powder; 2, various types (tile, stone) adhesive; 3, all types of plasters and various plastering mortar. Fourth, the recommended dosage: 0.05% -0.1%, while reducing about 0.1% methyl cellulose ether. V. Packaging: 25 kg / bag six storage: Store in a cool, dry place to prevent moisture penetration opened bags should be sealed again, not more than one pallet stacking; storage does not exceed one year. Seven, safety and environmental protection: According Gefahrstoffverordnung standard, this product is non-hazardous. And dust protection (VBG No.119) concerning the accident prevention rules must be observed. The product is divided into ST1 level. May be given in accordance with the requirements of the safety data sheet.