Aluminum Silicate n-Hydrate
Aluminum Silicate n-Hydrate
CAS: 12141-46-7
Molecular Formula: Al2O5Si
Aluminum Silicate n-Hydrate - Names and Identifiers
Aluminum Silicate n-Hydrate - Physico-chemical Properties
| Molecular Formula | Al2O5Si |
| Molar Mass | 162.05 |
| Density | 3.247 |
| Appearance | White powder |
| Storage Condition | Room Temprature |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00077645 |
| Physical and Chemical Properties | Amorphous ultra-fine white loose powder. Has excellent suspension and pure white appearance. The pH value of water immersion is 9.70~10.80. The apparent density was 0.22-0.28/L. It is a kind of functional silicate which can improve the color strength and hiding performance of pigment. |
| Use | Used for water-based latex paint, leather polishing slurry, printing coating slurry and other water-based coatings and paper making |
Aluminum Silicate n-Hydrate - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S7/9 - |
| WGK Germany | 3 |
| RTECS | ZG6800000 |
Aluminum Silicate n-Hydrate - Nature
Open Data Verified Data
is an amorphous ultra-fine white loose powder. Has excellent suspension and pure white appearance. The pH value of water immersion was 9. 70-10. 80. The apparent density was 0.22-0. 28kg/L. It is a kind of functional silicate which can improve the color strength and hiding performance of pigment.
Last Update：2024-01-02 23:10:35
Aluminum Silicate n-Hydrate - Preparation Method
Open Data Verified Data
precipitation method: the water glass and aluminum sulfate are Diluted respectively to prepare a solution of a certain concentration, and the neutralization reaction is carried out to generate aluminum silicate precipitate, which is filtered, washed, dried and pulverized to obtain aluminum silicate.
Last Update：2022-01-01 11:03:35
Aluminum Silicate n-Hydrate - Introduction
The ratio of alumina to silica is not constant. Insoluble in water and acid. Existed in the dirt. These two oxides can be obtained by mixing them in proportion and sintering them.
Last Update：2022-10-16 17:12:47
Aluminum Silicate n-Hydrate - Use
Open Data Verified Data
with pigment is widely used in paint, leather, printing and dyeing, ink, paper, plastic, rubber and other aspects. Especially in the coating can save 15% ~ 20% of the titanium dioxide, and significantly improve the coating whiteness, dry film hiding power, storage stability and weather resistance.
Last Update：2022-01-01 11:03:34
Aluminum Silicate n-Hydrate - Safety
Open Data Verified Data
packed in a woven bag lined with a polyethylene plastic bag. 20kg net weight per bag. Should be stored in a cool, dry and clean warehouse, sealed packaging, pay attention to moisture.
Last Update：2022-01-01 11:03:36
Aluminum Silicate n-Hydrate - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | aluminum silicate is an aluminosilicate, commonly known as "kyanite", "red silica" and "sillimanite". Chemical formula Al2O3 SiO2. Molecular weight 162.04. White orthogonal crystal. It has glass luster and transparent body. The melting point is 1545 ℃ (converted into Al2O3 · 2 SiO2), the boiling point is higher than 1545 ℃, the relative density is 3.247, and the refractive index is 1.66. Soluble in molten alkali, insoluble in water, hydrochloric acid, sulfuric acid. Decompose in case of hydrogen fluoride. It exists in nature in mineral form. Natural mineral is also called "mullite", chemical formula 3 Al2O3 2 SiO2, colorless orthogonal crystal, melting point 1920 ℃, relative density 3.156, refractive index 1.638(1.642, 1.653), insoluble in acid and water. Uses: Used to make glass, pottery, refractory materials, gems, technical ceramics, pigments and fillers in paints. Its natural minerals are used to make clay bricks, high alumina bricks and porcelain. aluminum silicate is mainly used to make high temperature resistant fireproof sound insulation cotton, plates, pipes, seam felt, fireproof insulation cloth, high temperature resistant paper, fire-resistant insulation rope, belt, fireproof insulation needle punching blanket (with silk throwing and blowing) and brick. Inorganic fireproof decorative panel. Inorganic fire shutter, etc. |
| function in paint | 1. superfine aluminum silicate replaces part of titanium dioxide, its dry film hiding power will not change, and can improve the whiteness of paint. If the amount of titanium dioxide remains unchanged, its dry film hiding power will be significantly improved and its whiteness will be greatly improved. 2. the PH value of ultrafine aluminum silicate ranges from 9.7 to 10.8, which has the buffer effect of PH value. Especially in the storage process of vinyl acetate latex paint, it can prevent the phenomenon that the PH value drops due to the hydrolysis of vinyl acetate, increase the dispersion stability of latex paint, and avoid the corrosion of the inner wall of the metal container. 3. The ultra-fine and grid structure of aluminum silicate slightly thickens the latex paint system, has good suspension, and prevents the occurrence of solid bottom sinking and surface water separation. 4. ultra-fine aluminum silicate makes latex paint film have good scrub resistance and weather resistance, and can shorten surface drying time. 5. Ultrafine aluminum silicate has extinction effect, so it can be used as an economical matting agent in semi-gloss and matte paint, and it is not suitable for use in gloss paint. |
| aluminum silicate catalyst | aluminum silicate catalyst is also known as amorphous silicon aluminum gel. It is usually represented by SiO2 · Al2O3. Mainly used in petroleum catalytic cracking to produce 84# gasoline. There are two kinds in industry: small ball aluminum silicate catalyst is used for moving bed catalytic cracking; microball aluminum silicate oxidant is used for fluidized bed catalytic cracking. Most of our refineries are fluidized bed catalytic cracking. Alumina accounts for about 10% of the microsphere aluminum silicate catalysts used. Industrial preparation of small ball aluminum silicate catalyst is to use sodium metaaluminate and sodium silicate two kinds of solution drop in the oil column, co-glue into small ball type aluminum silicate, and then in sodium sulfate solution aging, washing, drying, roasting. Microsphere aluminum silicate catalyst is obtained by spray molding of silicon aluminum gel. In addition to being used as a cracking catalyst, it can also be used as an acidic support for other bifunctional catalysts. |
| aluminum silicate refractory fiber | aluminum silicate refractory fiber refers to the amorphous fiber prepared by melting-blowing (or centrifuging) aluminum silicate refractory material. According to the content of Al2O3, it can be divided into low temperature type (Al2O3, about 40%), standard type (Al2O3,50%) and high temperature type (Al2O3,60%). According to chemical composition, it can be divided into ordinary aluminum silicate fiber, high purity aluminum silicate fiber, chromium-containing aluminum silicate fiber and high aluminum fiber. Good thermal insulation and chemical stability. However, mullite and cristobalite crystals are precipitated during use and lose their strength, accompanied by volume shrinkage. According to different compositions, the working temperature is between 1000 ℃ and 1350 ℃. It is not suitable for long-term use in a reduced atmosphere. In addition, fiber length, diameter, and slag ball content produced during blowing (or centrifugation) have a great influence on its thermal conductivity and the tensile strength, compression rate, rebound rate and high temperature load deformation curve of the product. In the early 1940s, kaolin was used as a raw material and melted and blown into ordinary aluminum silicate refractory fibers. Small batch production began in the early 50 s, when it was mainly used to fill the expansion joints of the walls of industrial furnaces. In the early 1960s, the secondary product processing technology was developed, and various secondary products such as blankets, felts, paper, ropes, and vacuum forming products were produced, which expanded the scope of use of refractory fibers and made the output of ordinary aluminum silicate fibers Rapid increase, production technology also tends to mature. China began to develop ordinary aluminum silicate refractory fibers in 1971, and by 1976 it had been mass-produced by electric arc furnace and injection. In 1979, the research on resistance furnace continuous melting and continuous blowing fiber technology and equipment was started. The intermediate test was completed in 1983. In 1985, the first Chinese-style resistance furnace continuous melting and continuous blowing process production line was completed, with an annual output of 500t of raw cotton. |
| application | is widely used in paint, leather, printing and dyeing, ink, paper making, plastic, rubber, etc. In particular, titanium dioxide, which can save 15% ~ 20%, is used in coatings, and the whiteness, dry film hiding power, storage stability and weather resistance of coatings are obviously improved. used for water-based latex paint, leather paste, printing paste and other water-based coatings, paper making, etc. |
| production method | precipitation method dilutes water glass and aluminum sulfate respectively to prepare a solution with a certain concentration, carries out neutralization reaction to generate aluminum silicate precipitation, which is filtered, washed, dried and crushed to obtain aluminum silicate. |
Last Update：2024-04-10 22:29:15
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Email: r@reformchem.com
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QQ: 3787852685
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Product Name: Aluminum Silicate n-Hydrate Request for quotationCAS: 12141-46-7
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: ALUMINUM SILICATE Visit Supplier Webpage Request for quotation
CAS: 12141-46-7
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 12141-46-7
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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