EPA Pesticide Chemical Code 075101
Trisodium hexafluoroaluminate
CAS: 15096-52-3;1344-75-8;13775-53-6;12397-51-2
Molecular Formula: AlF6Na3
EPA Pesticide Chemical Code 075101 - Names and Identifiers
EPA Pesticide Chemical Code 075101 - Physico-chemical Properties
| Molecular Formula | AlF6Na3 |
| Molar Mass | 209.94 |
| Density | 2.9 g/mL at 25 °C (lit.) |
| Melting Point | 1000°C |
| Boling Point | decomp |
| Water Solubility | Sparingly soluble in water(0.602 g/L at 20°C). |
| Appearance | Shape Crystals, color White |
| Specific Gravity | 2.9 |
| Color | White |
| Solubility Product Constant(Ksp) | pKsp: 9.39 |
| Merck | 14,2606 |
| Storage Condition | 2-8°C |
| Refractive Index | 1.338 |
| Physical and Chemical Properties | Character: colorless monoclinic crystal. Often because of containing impurities and gray-white, light yellow, light red or black. Often in the form of an inseparable dense block, with glass gloss. melting point 1000 ℃ relative density 2.9~3.0 solubility it is slightly soluble in water, and the aqueous solution is acidic. |
| Use | Mainly used as aluminum flux, pesticides, also used in glass, enamel, resin, rubber industry |
EPA Pesticide Chemical Code 075101 - Risk and Safety
| Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R48/23/25 - R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20 - Harmful by inhalation |
| Safety Description | S22 - Do not breathe dust. S37 - Wear suitable gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 1 |
| RTECS | BD0075000 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | 本品毒性作用类似于氟化物，但毒性较低，只须采取常规防护措施就可防止中毒。应注意防尘。 |
EPA Pesticide Chemical Code 075101 - Upstream Downstream Industry
| Raw Materials | Sodium carbonate Fluorosilicic acid Hydrofluoric Acid Sulfuric acid Hydrofluoric Acid Aluminum hydroxide Sodium carbonate Calcium fluoride Calcium fluoride |
EPA Pesticide Chemical Code 075101 - Introduction
Open Data Unverified Data
cryolite (Cryolite) is a mineral, sodium hexafluoroaluminate (Na3AlF6), white monoclinic system, slightly soluble in water, soluble in alumina, used as a flux in the electrolytic aluminum industry, and a sunscreen for the manufacture of milky white glass and enamel. It is often off-white, light yellow, light red or black due to impurities. Often in the form of an indivisible dense block, with a glassy luster. Slightly soluble in water, the aqueous solution is acidic.
trisodium hexafluoroaluminate
Classification Cryolite can be divided into high molecular ratio cryolite and low molecular ratio cryolite according to the molecular ratio of sodium fluoride to aluminum fluoride. Most electrolytic aluminum plants in China use cryolite with a molecular ratio of 1.8~2.2 as electrolyte for aluminum electrolysis. Since the use of polymer cryolite is better than low-molecular cryolite in terms of environmental protection and economic benefits, various electrolytic aluminum plants in China generally use polymer cryolite as an electrolyte for aluminum electrolysis. Cryolite can be divided into sandy cryolite, granular cryolite and powdered cryolite according to its physical properties.
Use
Cryolite is mainly used as a flux for aluminum electrolysis; it is also used as a wear-resistant additive for grinding products, which can effectively improve the wear resistance, cutting and cutting force of the grinding wheel, and extend the service life and storage time of the grinding wheel; flux for ferroalloy and boiling steel, Non-ferrous metal flux, cast deoxidizer, olefin polymerization catalyst, and used for glass anti-reflective coating, enamel emulsifier, glass milking agent, flux for welding materials, filler for ceramic industry, pesticides, pesticides and other industries.
application sodium fluoroaluminate is mainly used as a flux for electrolytic aluminum smelting, pesticide for crops, melting agent for enamel and milky whitening agent, and can also be used to make milky glass, as well as electrolyte and grinding wheel ingredients in the production of aluminum alloy, iron alloy and boiling steel.
Preparation
A production method of sodium fluoroaluminate, which includes the following steps:
1. Add anhydrous hydrofluoric acid to water, and dissolve under normal temperature and pressure to generate hydrofluoric acid with a mass fraction of 40% for standby;
2. Under normal temperature and pressure, add aluminum hydroxide and sodium hydroxide in proportion to the reaction tank and stir to generate sodium metaaluminate;
3. add the 40% hydrofluoric acid spare in step 1 to the reaction tank in step 2 to react with sodium metaaluminate to generate a crude product;
4. precipitate, centrifuge, separate, wash and dry the crude product to obtain the finished sodium fluoroaluminate.
Uses Mainly used as aluminum smelting flux, insecticide, and also used in glass, enamel, resin, and rubber industries
Last Update：2024-04-09 19:43:38
EPA Pesticide Chemical Code 075101 - Nature
Open Data Verified Data
colorless monoclinic crystal, the appearance is similar to the cube, pure product is colorless, often due to containing impurities and gray-white, light yellow, light red, black. It is often an inseparable dense block, with transparent gloss and grease, White Stripes and glass luster. The relative density of 2.9~3.0, the melting point of 1000. Easy to absorb moisture, is soluble in water, the aqueous solution is acidic, in case of sulfuric acid decomposition release highly toxic hydrogen fluoride gas!
Last Update：2024-01-02 23:10:35
EPA Pesticide Chemical Code 075101 - Preparation Method
Open Data Verified Data
- synthesis method: sodium fluoride is synthesized from sodium carbonate solution and fluorosilicic acid, and aluminum fluoride is synthesized from fluorosilicic acid and aluminum hydroxide. After filtration, it is reacted to synthesize cryolite, which is filtered and dried, finished cryolite was obtained.
- dry process: the gaseous hydrogen fluoride is passed through aluminum hydroxide at 400-700 ° C. To generate fluoroaluminate, which is then reacted with sodium carbonate at high temperature to synthesize cryolite, which is then filtered and dried to obtain a finished cryolite product.
- aluminum industrial recovery method: under steam heating, aluminum industrial waste and hydrofluoric acid reaction to generate aluminum fluoride, and then under steam heating with sodium carbonate solution reaction, synthesis of cryolite, and then filtered, dry, prepared cryolite products.
Last Update：2022-01-01 11:01:30
EPA Pesticide Chemical Code 075101 - Use
Open Data Verified Data
It is mainly used as a flux for aluminum smelting, an insecticide for crops, a melting agent for ceramic glaze and a lactalbumin; It is also used for manufacturing opalescent glass, and can also be used as an aluminum alloy, ferroalloy and boiling steel in the production of electrolyte and grinding wheel ingredients.
Last Update：2022-01-01 11:01:30
EPA Pesticide Chemical Code 075101 - Safety
Open Data Verified Data
The toxic effect of this product is similar to fluoride, but the toxicity is low, only need to take the conventional Protection Measure can prevent poisoning. Should pay attention to dust. Packed in bursal or woven bags lined with polyethylene film bags, each with a net weight of 25kg or sokg. Package should be marked with "drug" label
Mr. Should be stored in a ventilated, dry warehouse. Take precautions against humidity. Do not store and mix with food or acids. There are drugs. Hazard code: GB 6.1 class 61520. Fire can be suppressed by water, sand and carbon tetrachloride fire.
Last Update：2022-01-01 11:01:31
EPA Pesticide Chemical Code 075101 - Reference Information
| toxicity | the toxic effect of this product is similar to fluoride, but the toxicity is low, only routine protective measures can be taken to prevent poisoning. Attention should be paid to dust prevention. |
| Chemical properties | Colorless monoclinic crystal. It is often off-white, light yellow, light red or black due to impurities. Often in the form of an indivisible dense block, with a glassy luster. Slightly soluble in water, the aqueous solution is acidic. |
| Use | Mainly used as a flux for aluminum smelting, it can also be used as a filler for resin-bonded grinding wheels, an olefin polymerization catalyst, and an anti-reflection coating for glass. Mainly used as a flux for aluminum smelting, insecticide, also used in glass, enamel, resin, rubber industry mainly used as a flux for aluminum smelting, pesticide for crops, melting agent for enamel and milky whitening agent. It is also used to make opal glass, and can also be used as electrolyte and grinding wheel ingredients in the production of aluminum alloy, ferroalloy and boiling steel. emission spectrum analysis, insecticide, adhesive, flux, enamel agent, chemical reagent. |
| production method | synthesis method synthesizes sodium fluoride from sodium carbonate solution and fluorosilicic acid, and synthesizes aluminum fluoride from fluorosilicic acid and aluminum hydroxide. after filtration, it reacts to synthesize cryolite, and then filters and dries to produce cryolite finished products. Its H2SiF6 3Na2CO3 → 6NaF SiO2 H2O 3CO2 ↑ H2SiF6 2AI(OH)3 → 2AlF3 SiO2 4H2OA1F3 3NaF → Na3 AlF6 dry method makes gaseous hydrogen fluoride pass through aluminum hydroxide at 400~700 ℃ to generate fluoroaluminic acid, then react with sodium carbonate at high temperature to synthesize cryolite, and then filter and dry to produce cryolite finished product. Its 6HF AI(OH)3 → A1F3 · 3HF 3H2O2(A1F3 · 3HF) 3Na2CO3 → 2Na3AIF6 3CO2 ↑ 3H2O aluminum industrial recovery method Under steam heating, the waste from the aluminum industry reacts with hydrofluoric acid to generate aluminum fluoride, and then reacts with sodium carbonate solution under steam heating to synthesize cryolite, and then filters and dries to produce cryolite products. Its 6HF AI(OH)3 → AlF3 · 3HF 3H2O2(A1F3 · 3HF) 3Na2CO3 → 2Na3AlF6 3H2O 3CO2 ↑ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-09 21:21:28
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CAS: 15096-52-3
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Raw Materials for EPA Pesticide Chemical Code 075101