magnesiumfluorure
Magnesium fluoride
CAS: 7783-40-6
Molecular Formula: F2Mg
magnesiumfluorure - Names and Identifiers
magnesiumfluorure - Physico-chemical Properties
| Molecular Formula | F2Mg |
| Molar Mass | 62.3 |
| Density | 3.15 g/mL at 25 °C (lit.) |
| Melting Point | 1263 °C (lit.) |
| Boling Point | 2227 °C/1 atm (lit.) |
| Water Solubility | 87 mg/L (18 ºC) |
| Solubility | Slightly soluble in water and dilute HNO3. |
| Vapor Presure | 922mmHg at 25°C |
| Appearance | White crystal |
| Specific Gravity | 3.15 |
| Color | White to off-white |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 10.29 |
| Merck | 14,5665 |
| Storage Condition | Room Temprature |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.365 |
| MDL | MFCD00011108 |
| Physical and Chemical Properties | Colorless tetragonal crystal or powder. Tasteless. melting point 1261 ℃ boiling point 2239 ℃ relative density 3.148 solubility: soluble in nitric acid, slightly soluble in dilute acid, insoluble in water and alcohol. |
| Use | Used as a co-solvent for smelting metal magnesium, additive for electrolytic aluminum, optical lens coating, coating agent for titanium pigment, fluorescent material for cathode ray screen, etc. |
magnesiumfluorure - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| 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. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| RTECS | OM3325000 |
| TSCA | Yes |
| HS Code | 28261900 |
| Hazard Note | Irritant |
| Toxicity | LD in guinea pigs (mg/kg): 1000 orally, 3000 s.c. (Waldbott) |
magnesiumfluorure - Upstream Downstream Industry
magnesiumfluorure - Nature
Open Data Verified Data
colorless tetragonal crystals or powders. d 3. 148; Melting point of 1248 deg C; Boiling point of 2260 deg C; Mohs hardness 6. Soluble in nitric acid, slightly soluble in dilute acid, difficult to dissolve in water (18 ℃,87mg/L) and alcohol. Under the electro-optical heating, the weak purple fluorescence, the crystal has good polarization, especially suitable for ultraviolet and infrared spectra.
Last Update：2024-01-02 23:10:35
magnesiumfluorure - Preparation Method
Open Data Verified Data
magnesite powder is added to excess hydrofluoric acid under stirring, and reacted at 90~95 °c to obtain magnesium fluoride, which is filtered, washed, and dried at about 105 °c, it was obtained after crushing.
Last Update：2022-01-01 09:06:35
magnesiumfluorure - Introduction
It shows purple fluorescence under the light, slightly soluble in dilute acid, almost insoluble in water. Rutile lattice, under electro-optic heating to show weak purple fluorescence, the crystal has a good polarization effect, especially suitable for ultraviolet and infrared spectrum. Very slightly soluble in water (18 ℃,87mg/L), slightly soluble in dilute acid (especially nitric acid). The lethal dose (guinea pig, oral) is 1.0 g/kg. It's irritating.
Last Update：2022-10-16 17:28:45
magnesiumfluorure - Use
Open Data Verified Data
a fluorescent material used as a cathode ray screen, an inverse refractive agent for an optical lens, and a solder. It is also a flux for the manufacture of ceramics, glass, magnesium and aluminum, and a coating for lenses and filters in optical instruments.
Last Update：2022-01-01 09:06:35
magnesiumfluorure - Safety
Open Data Verified Data
- guinea pig oral LD:lOOOmg/kg, intramuscular injection of 3000mg/kg. The operator should do the necessary protection.
- This product is toxic. Operators should wear necessary protective equipment. The use of two layers of kraft paper bags or woven bags lined with polyethylene plastic bags. 50kg net weight per bag. The package should be marked with "drug. Belonging to inorganic drugs. Should be stored in a cool, dry warehouse. It cannot be co-stored and co-transported with food products.
Last Update：2022-01-01 09:06:36
magnesiumfluorure - Reference Information
| crystal structure | Tetragonal, Rutile |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| solubility in water (g/100ml) | grams dissolved per 100ml of water: 7.325 × 10-3/20 ℃ |
| toxicity | This product is toxic. Operators should wear necessary protective equipment. |
| Use | for the optical glass and ceramic industry and the electronics industry for the manufacture of ceramics, glass, co-solvent for smelting magnesium metal, coating of lenses and filters in optical instruments. Fluorescent materials for cathode ray screens, anti-refractive agents and soldering agents for optical lenses, and coating agents for titanium pigments. |
| production method | magnesium carbonate method in a lead-lined reactor containing an excess of hydrofluoric acid, magnesite pulp is added under agitation, the reaction was carried out at 90-95 °c. The magnesium fluoride produced by the reaction was filtered, washed, dried at about 105 ° C., and then pulverized to obtain a finished magnesium fluoride. MgCO3 2HF → MgF2 H2O C02 |
Last Update：2024-04-10 22:29:15
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Raw Materials for magnesiumfluorure