Is polyaluminum chloride a dangerous product?
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This post was last edited by sunjl1981 at 2013-1-6 20:10:hug: Recently, I purchased hundreds of kilograms of polyaluminum chloride for someone at a chemical company, but the shipping order said aluminum chloride. Later, the transportation and management department checked it and asked me to go to the chemical company to get the material list of the product. Later, the company said that it could only provide a non-dangerous goods certificate. However, the transportation and management department also found the safety instructions for polyaluminum chloride on your forum, and it did say dangerous goods. I was also confused. I don't know if it is true. Please tell me if you know, thank you! This post was last edited by shizhiyong001 on 2008-7-16 10:59 ] # hcbbs
1) Polyaluminum chloride, referred to as PAC, is an inorganic polymer coagulant. It is a compound between AlCl3 and Al(OH)3, which polymerizes through hydroxyl bridges. Its general chemical formula is m. (In the formula, 1≤n≤5, m≤10. ) (2) Properties and performance of this product: * * or * * It is a solid powder, easily soluble in water, and has strong bridging adsorption. During the hydrolysis process, it is accompanied by physical and chemical changes such as electrochemistry, condensation, adsorption, and precipitation, and ultimately generates [Al2(OH)3(OH)3]∝↓, thereby achieving the purpose of purification. (3) Product features 1. No need to add other additives, the flocs are formed quickly and thickly, with high activity and rapid precipitation. Therefore, the purification effect on high turbidity water is particularly obvious. 2. It can adapt to a wide range of PH values and reduce the PH value in raw water, so it has no corrosive effect on pipeline equipment. 3. Decolorization and strong detergency. The water purification effect is 4-6 times that of Al2(SO4)3 and 3-5 times that of AlCl3. Small dosage, high effectiveness ； Low cost and high efficiency. (4) Purpose: This product is mainly used for the purification of domestic water and the treatment of industrial wastewater and special water quality (such as oily sewage, foreign printing, precision casting, oil drilling, tanning, metallurgy and papermaking, etc.). It is also widely used.
It is a water purifier. Do you think it is a dangerous product?
Aluminum trichloride is regulated as an 8.1 hazardous chemical, but I really didn’t know that polyaluminum chloride was a hazardous chemical. study here * Got:L
It shouldn’t be classified as a hazardous chemical, right? At least I didn't find it in the directory
High-purity PAC is flocculated for drinking water and can be used as food and cosmetics. . .