Guangzhou Banned 13 Types of Building Materials

Guangzhou disables the prohibition of 13 building materials fonts:【Large, small, and medium】 ------------------------------------- ------------------------------------------- author: China petroleum and Chemical 2004-10-10 9:10:00 The relevant department in Guangzhou decided a few days ago that due to considerations of environmental protection and other factors, it is forbidden to use 13 kinds of backward products such as tar type waterproof material in the new construction, maintenance and decoration projects in Guangzhou in the future. The relevant building material companies within the administrative area of ​​Guangzhou shall not organize the production of these 13 products that are strictly prohibited. These 13 kinds of products are building materials that pollute the environment, affect human health or technical backwardness, and are subject to national industrial policy restrictions. These include tar-type waterproof materials, paper tar felts, PVC plastic ointments, polyvinyl chloride cement, and polyvinyl formal Adhesives and paints (107 glue, 106 paint, etc.), sanitary ware fittings with water inlets below the surface (low water intake), toilets with a water flush of 9 liters or more, floor drains with a water seal of less than 5 cm, solid belly There are 13 kinds of products, such as steel windows, spiral lift cast iron nozzles, cast iron globe valves, and solvent-based interior wall coatings.

Perchloroethylene

Tetrachloroethylene is a colorless, transparent liquid with an ether-like odor. Can dissolve a variety of substances (such as rubber, resin, fat, aluminum trichloride, sulfur, iodine, mercury chloride). Miscible with Ethanol, ether, chloroform, benzene. Dissolved in about 10,000 volumes of water.

It is mainly used as organic solvent, dry cleanser and metal degreaser as well as anthelmintic.
It can be applied to all kinds of nature and synthetic fabrics as a dry cleanser, and the fabric will be soft, glossy, odorless, fadeproof, in shape and free of damage after being washed. It can also be used as fatty extractant and the raw material for HCFC-123.HCFC-124,HCFC-125, HCFC-134a etc.

Molecular formula: C2HC13
Tetrachloroethylene, also known under the systematic name tetrachloroethene, or perchloroethylene ("perc" or "PERC"), and many other names, is a chlorocarbon with the formula Cl2C=CCl2. It is a colorless liquid widely used for dry cleaning of fabrics, hence it is sometimes called "dry-cleaning fluid."


Perchloroethylene 99.9%,Trichloroethylene Purity 99.5%,Tce 99% Trichloroethene,Chlorylene For Refrigerants

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