YTTERBIUM FLUORIDE
ytterbium trifluoride
CAS: 13760-80-0
Molecular Formula: F3Yb
YTTERBIUM FLUORIDE - Names and Identifiers
| Name | ytterbium trifluoride |
| Synonyms | YTTERBIUM FLUORIDE Ytterbium fluoride lutetium trifluoride Ytterbium trifluoride ytterbium trifluoride YTTERBIUM TRIFLUORIDE ytterbiumfluoride(ybf3) YTTERBIUM(III) FLUORIDE ytterbium(3+) trifluoride Ytterbium fluoride (YbF3) |
| CAS | 13760-80-0 |
| EINECS | 237-354-2 |
| InChI | InChI=1/3FH.Lu/h3*1H;/q;;;+3/p-3 |
YTTERBIUM FLUORIDE - Physico-chemical Properties
| Molecular Formula | F3Yb |
| Molar Mass | 230.04 |
| Density | 4.01g/mLat 25°C(lit.) |
| Melting Point | 1157 °C |
| Boling Point | 2200 °C |
| Water Solubility | Soluble moderately in strong mineral acids. Insoluble in water. |
| Appearance | Powder |
| Specific Gravity | 8.168 |
| Color | white |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3 |
| Stability | hygroscopic |
| Sensitive | Hygroscopic |
| Refractive Index | 1.54 |
YTTERBIUM FLUORIDE - Risk and Safety
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R32 - Contact with acids liberates very toxic gas |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3288 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | ZG2487500 |
| TSCA | Yes |
| HS Code | 28261990 |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | III |
YTTERBIUM FLUORIDE - Reference Information
| Introduction | ytterbium fluoride is a colorless transparent cubic crystal or white powder. Soluble in hydrochloric acid, nitric acid, hydrofluoric acid and ammonium chloride solution, slightly soluble in water. |
| Background | at present, the demand for fluoride optical glass materials is increasing year by year, mainly used in optical fiber communication, medicine and other fields. Fluoride optical glass is mainly composed of alkaline earth metal fluoride and rare earth fluoride. The addition of ytterbium fluoride to fluoride glass can make fluoride glass have excellent near infrared and special optical properties. |
| Application | ytterbium fluoride can be used as optical materials due to luminescence, mainly fiber doping, laser crystal, single crystal raw materials, laser amplifier, as well as the preparation and study of fluorinated glass. |
| preparation | Step 1: Synthesis of ytterbium fluoride 1) high-purity hydrofluoric acid with a concentration of 65% is added to a polytetrafluoride reactor, add deionized water and stir evenly, with a concentration of 35% of high-purity hydrofluoric acid; High-purity hydrofluoric acid refers to the metal impurities Fe, Cu, Ni, Cr, Co, Mn, Ti, V, the content of Pb is less than 0.3ppm of hydrofluoric acid; 2) The ytterbium carbonate filter cake is stirred with water to form a paste with a solid content of 35%, and the temperature is raised to 45 ° C., and then to step 4.1). After adding a small amount of ytterbium carbonate paste to the obtained high-purity hydrofluoric acid, stop adding the ytterbium carbonate paste, slowly add the ytterbium carbonate paste after forming a large particle ytterbium fluoride sperm seed, and the end pH value of the synthesis reaction is 1-2, in practice, high-purity hydrofluoric acid can also be slowly added into the ytterbium carbonate paste, but this order of addition is not conducive to the corona of carbon dioxide, which will prolong the time for the step 5 to catch the carbon dioxide, affect the preparation efficiency; The volume ratio of ytterbium carbonate paste and high purity hydrofluoric acid is 2:8; Step 2, driving the net carbon dioxide: the step 1.2 Synthesis of ytterbium fluoride precipitate, add deionized water, The solid content of the paste is 40%, and the temperature is raised to 105 ℃ for 2.5 hours to drive the purification of carbon dioxide (if not, it will affect the purity of the final finished product of ytterbium fluoride); during the incubation period, the pH value of the reactant is tested. If the pH value is not 1~1.5, the high purity hydrofluoric acid with a concentration of 35% is supplemented to adjust the pH value to maintain the pH value at 1~1.5, roasting ytterbium fluoride: 3.1 ytterbium fluoride after removing carbon dioxide in step 5 is sent to plate-frame filter press for filtration, washed until both chloride ion and sulfate ion in ytterbium fluoride are less than 20ppm, and then dried to form ytterbium fluoride filter cake and taken out; 3.2 put the taken-out ytterbium fluoride filter cake into a ceramic crucible, and heat-increase-baked with gradient to obtain the final ytterbium fluoride product; The gradient heat-increase-roasting is specifically as follows: the first stage: heat-up to a temperature of 115 ℃, and roasting for 3 hours, the surface water of ytterbium fluoride is separated; The second stage: the temperature is raised to 480 ℃, and the crystal water of ytterbium fluoride is removed by roasting for 2 hours; The third stage: the temperature is raised to 660 ° C., roasting for 2 hours to remove the structural water of ytterbium fluoride; The fourth stage: the temperature is raised to 785 ° C., after roasting for 3 hours, the temperature is lowered to room temperature, that is, the final calcined ytterbium fluoride product was obtained. |
| Use | for the preparation and research of fluorinated glass. |
| EPA chemical substance information | information is provided by: ofmpeb.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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