Aluminum fluoride trihydrate
Aluminum fluoride trihydrate
CAS: 15098-87-0
Molecular Formula: AlF3H6O3
Aluminum fluoride trihydrate - Names and Identifiers
Aluminum fluoride trihydrate - Physico-chemical Properties
| Molecular Formula | AlF3H6O3 |
| Molar Mass | 138.02 |
| Density | 2.88g/mLat 25°C(lit.) |
| Melting Point | 250℃ -3H{2}O |
| Water Solubility | Slightly soluble in water, acids and alkalis. Insoluble in alcohol and acetone. |
| Appearance | Powder |
| Color | White |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3; TWA 2 mg/m3; TWA 2.5 mg/m3 |
Aluminum fluoride trihydrate - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S37 - Wear suitable gloves. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S22 - Do not breathe dust. |
| UN IDs | 3260 |
| WGK Germany | 1 |
| TSCA | Yes |
| HS Code | 28261200 |
| Hazard Note | Highly Toxic/Irritant |
| Hazard Class | 8 |
| Packing Group | III |
Aluminum fluoride trihydrate - Reference Information
| preparation | add the aluminum hydroxide slurry with the concentration of 40% to the reaction vessel containing the ammonium hydrogen fluoride solution with the concentration of 60% according to the reaction ratio, and carry out the reaction for 25 minutes, the reaction temperature is controlled at 100 ° C., the reaction generates an aluminum fluoride solution, ammonia gas is absorbed to obtain ammonia water, and the aluminum fluoride solution is crystallized. The crystallization temperature is 80 ° C., and the crystallization time is 5 hours, and aluminum fluoride trihydrate is crystallized to obtain aluminum fluoride. |
| Use | aluminium fluoride is colorless or white crystalline. Insoluble in water, insoluble in acid and alkali. The properties are very stable and can be hydrolyzed under heating. Mainly used for aluminum. It can be prepared by the interaction of aluminum trichloride with hydrofluoric acid and ammonia. Aluminum fluoride is mainly used in the production of aluminum to reduce the melting point and improve the conductivity of the electrolyte. It is used as an inhibitor of secondary fermentation in alcohol production. It is also used as a component of flux and glaze for ceramic and enamel glazes. It can also be used as a flux for smelting non-ferrous metals. |
| production method | pure aluminum hydroxide is dissolved in an excess of 37% hydrofluoric acid for reaction, the insoluble matter is filtered off, and then the reaction solution is evaporated at 100 oC (not more than 100 oC) to all crystals. It is washed with water several times, filtered and dried off. |
Last Update：2024-04-10 22:29:15
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View History
Aluminum fluoride trihydrate
ETPPCL
2-naftolo
17671-53-3
5-NITRO-1,3-DIHYDRO-2H-ISOINDOL-1,3-DIONE
strontium hydrate
123-11-5
17607-71-5
E-Base
2-(CHLOROMETHYL)-4-METHOXY-3,5-DIMETHYLPYRIDINE HYDROCHLORIDE
ETPPCL
2-naftolo
17671-53-3
5-NITRO-1,3-DIHYDRO-2H-ISOINDOL-1,3-DIONE
strontium hydrate
123-11-5
17607-71-5
E-Base
2-(CHLOROMETHYL)-4-METHOXY-3,5-DIMETHYLPYRIDINE HYDROCHLORIDE