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Catalog No. : GH-06

Polyaluminium Chloride

  • 101707-17-9
  • 1ton
  • 99%
  • 30Day (s)
Packing :

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Product Info

Compound Polyaluminium Chloride
CAS No. 101707-17-9 Catalog No. GH-06 Brand
Purity 99% Packing 1ton Grade
Lead Time 30Day (s) Origin Loading Port


Aluminum chlorohydrate (anhydrous); Aluminum hydroxychloride; Aluminum oxychloride; ACH 325; ACH 331; ACH 7-321; Aloxicoll; Aluminol ACH; Aluminum chlorhydrate; Aluminum chlorhydroxide; Aluminum chloride hydroxide; Aluminum chloride hydroxide oxide, basic

The main purpose

1. Is a flocculating agent, mainly used for purifying drinking water and water supply of special water treatment, such as iron, fluoride, cadmium removal, in addition to radioactive contamination, in addition to the floating oil etc. Also used for industrial wastewater treatment, such as printing and dyeing wastewater, etc. In addition, also used in precision casting, medicine, paper making, rubber, leather, oil, chemical, dyes. 2. The polyaluminium chloride used as water treatment agent in the surface treatment. 3. Khan cosmetics suppression the main raw material.

Folding edit this paragraph number system

CAS no. : 1327-41-9; 101707-17-9; 11097-68-0; The 114442-10-3;

EINECS no. : 215-477-2

Fold the data editing this section ecology

Can make the skin surface protein coagulation, sweat glands swell, blocking sweat circulation, inhibit or reduce the secretion of sweat, is a powerful astringent.

Folding editing this section properties and stability

1. Has the properties such as adsorption, coagulation, precipitation, polyaluminium chloride poor stability. Toxic and corrosive protection, such as accidentally splashed on the skin to rinse with water immediately. Production personnel to wear the uniform, wearing masks, gloves, wearing their boots. Good ventilation is required in the production equipment to be closed, workshop.

2. The corrosive. Decompose when heated to above 110 , release hydrogen chloride gas, finally into alumina; Reaction with acid depolymerization occurs, lower the degree of polymerization and the basicity, the last is aluminium salts. And alkali can improved the degree of polymerization and the basicity, eventually forming aluminum hydroxide precipitation or aluminate; With aluminum sulfate or other polyvalent acid salt mixed breeds into precipitation, coagulation performance can reduce or completely lost.

Fold to edit this section water purification principle

The electric double layer compression [2]

Micelle structure of electric double layer determines the ion concentration of the biggest in the colloidal particle surface, as the distance to the surface of the colloidal particles, the ion concentration is lower, the greater the ultimate equals the ion concentration in the solution. When to cic and electrolyte solution, make the higher ion concentration in the solution, the diffusion layer thickness decreases.

When two colloidal particles close to each other, because of the diffusion layer thickness decreases, and deduced potential decreased, so they repel each other, the force is reduced, namely high ion concentration in the solution of repulsion between rubber is smaller than ion concentration is low. Colloidal particles between the suction is not affected by water phase composition, but due to the diffusion thinning, they collide distance is reduced, such mutual attraction is big. Visible its rejection and attracted by the repulsive force primarily into is given priority to with suction disappeared (exclude potential energy), colloidal particles condensed rapidly. This mechanism can well explain the harbour of deposition, because of fresh water into the water, the salt increases, the increased ion concentration, fresh water with the stability of the colloidal particles is reduced, so in the harbor of clay and other colloidal particle deposition.

According to this mechanism, when applied in the solution electrolytes than condensed many critical agglomeration concentration occurs, there will be no more excess of ions into the diffusion layer, and can't appear symbols change of colloidal particles and make colloidal particles to the stability of the situation. Such a mechanism is through simple electrostatic phenomena to explain the role of the electrolyte stability of colloidal particles, but it did not consider to take off the stability in the process of the role of other properties, such as adsorption, so you cannot explain some of the other complex unstable phenomenon, such as trivalent aluminium salt and iron salts coagulant dosage is overmuch, condensation effect declines, even to stable; Like electricity, polymers or polymer with colloidal particles with organic matter might have good condensation effect: isoelectric state should have the best coagulation effect, but usually in the production practice is deduced potential is greater than zero coagulation effect is minimal, and so on.

Actually add coagulant made colloidal particles in the aqueous solution to take off the unstable phenomenon involving colloidal particles and coagulant, colloidal particle and the aqueous solution, coagulant aqueous solution and the interaction of three aspects, is a comprehensive phenomenon.

Adsorption electrical neutralization

Electricity neutralization adsorption refers to the particle surface for different ions, different number of colloidal particles or chain from molecules with opposite sign charge parts have a strong adsorption, due to the adsorption and some of its charge, reduced the electrostatic repulsion, and therefore easy to each other with other particles close to adsorption. The electrostatic attraction is often the main aspects of the role, but in many cases, the role of the other more than electrostatic attraction.

, for example, with Na + and dodecyl ammonium ion (C12H25NH3 +) caused by removing the negatively charged silver iodide solution turbidity, found with organic amine is one of the ion to take off the stability capacity is much bigger than the Na +, Na + additive will not result in excessive micelle stability again, ions and organic amine otherwise, more than a certain cast rear can make colloidal particles to stability occur, reverse ion colloidal particle adsorption way too much, make originally the negative into a positive. Aluminum salt, iron salt dosing quantity also occurs when high unstable phenomenon, and bring a charge change number again. The above phenomenon with electricity and explain the mechanism of adsorption is very appropriate.

Adsorption bridging role

Adsorption bridging mechanism mainly refers to the high polymer material and adsorption of colloidal particles and bridge. Can also understand the middle into two large number with colloidal particles with a different number colloidal particles and together. High polymer flocculant with linear structure, they have with parts play a role of colloidal particle surface functional groups, when high polymer contact with colloidal particles, groups with special reaction and colloidal particles surface adsorption, while the rest of the polymer molecules spread in solution, can have vacancy of colloidal particles with another surface adsorption, it ACTS as a bridge to connect the polymer. If less colloidal particles, the polymer stretching part adhesion not second colloidal particles, the stretching part sooner or later will be the original colloidal particles adsorbed on other parts, the polymer can't bridging role, and colloidal particles in a stable state. When the polymer flocculant dosing of the colloidal particle surface saturation causes unstable phenomenon. Have bridging flocculation of colloidal particles, such as by vigorous agitation for long, bridging polymer may release from another colloidal particle surface, heavy roll back to the original colloidal particle surface, caused to a stable state.

Adsorption on the surface of the polymer in colloidal particles derived from various physical chemistry, such as van der Waals force, electrostatic force, hydrogen bonding, coordination bond and so on, depending on the polymer colloidal particle surface with both the characteristics of chemical structure. This mechanism can be explained nonionic or with electricity number of ionic polymer flocculant can get good flocculation effect.

The mechanism of sediment trap

When metal salts (such as aluminum sulfate and ferric chloride) or metal oxide and hydroxide (such as lime) as a coagulant, when the additive quantity is big enough to rapidly precipitation metal hydroxide (such as Al (OH) 3, Fe (OH) 3, Mg (OH) 2 or metal carbonate (CaCO3), the colloidal particles in the water can be the sediment in the formation of the trap. When sediments are positively charged (Al (OH) 3 and Fe (OH) 3 in neutral and acidic pH range), the precipitation speed can be accelerated, because of the solution of anionic such as sulfuric acid silver ions. In addition the water colloidal particle itself can be used as the metal oxide deposits formed the core of oxygen, so the best coagulant dosing quantity and the concentration of the substance to be inversely proportional to, the colloidal particles, the more the less metal coagulant dosing quantity.

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