Yttriumoxide
Yttrium(III)-oxide
CAS: 1314-36-9;11130-29-3
Molecular Formula: O3Y2
Yttriumoxide - Names and Identifiers
| Name | Yttrium(III)-oxide |
| Synonyms | Yttriumoxid Yttriumoxide YTTRIUMOXIDES oxygen(-2) anion Yttrium(III)-oxide yttrium(+3) cation YTTRIUMOXIDE,POWDER Y2O3 A YTTRIUMOXIDE GRADE A - A PRODUCT OF H.C. STARCK |
| CAS | 1314-36-9 11130-29-3 |
| EINECS | 215-233-5 |
| InChI | InChI=1/3O.2Y/rO3Y2/c1-4-3-5-2 |
| InChIKey | SIWVEOZUMHYXCS-UHFFFAOYSA-N |
Yttriumoxide - Physico-chemical Properties
| Molecular Formula | O3Y2 |
| Molar Mass | 225.81 |
| Density | 5.01g/mLat 25°C(lit.) |
| Melting Point | 2410 °C |
| Boling Point | 81-83°C |
| Flash Point | 12°C |
| Water Solubility | Insoluble |
| Appearance | White powder |
| Specific Gravity | 5.01 |
| Color | White |
| Exposure Limit | ACGIH: TWA 1 mg/m3NIOSH: IDLH 500 mg/m3; TWA 1 mg/m3 |
| Merck | 14,10107 |
| PH | 10±1 |
| Storage Condition | no restrictions. |
| Sensitive | Air Sensitive |
| MDL | MFCD00011473 |
| Physical and Chemical Properties | Character: white with slightly yellow powder. melting point 2410 ℃ relative density 5.01 solubility insoluble in water and alkali, soluble in acid. |
| Use | It is used as white hot gas lamp shade, color TV fluorescent powder, magnetic material additive, and also used in atomic energy industry |
Yttriumoxide - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R67 - Vapors may cause drowsiness and dizziness R36/37 - Irritating to eyes and respiratory system. R36 - Irritating to the eyes R11 - Highly Flammable |
| 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 S16 - Keep away from sources of ignition. |
| UN IDs | UN1950 |
| WGK Germany | 1 |
| RTECS | ZG3850000 |
| FLUKA BRAND F CODES | 3-9 |
| TSCA | Yes |
| HS Code | 28469011 |
| Hazard Class | 2.1 |
Yttriumoxide - Nature
Open Data Verified Data
yttrium oxide is a white powder. d 5. 03; Melting point 2415 °c. Open Air is easy to absorb carbon dioxide and water. Insoluble in water, soluble in mineral acids.
Last Update：2024-01-02 23:10:35
Yttriumoxide - Preparation Method
Open Data Verified Data
The mixed rare earth solution obtained from the decomposition of Brown yttrium niobium ore is obtained by extraction, acid dissolution, re extraction, direct concentration and ignition.
Last Update：2022-01-01 09:06:54
Yttriumoxide - Introduction
It's hygroscopic. It quickly absorbs ammonia in the air and displaces ammonia from ammonium salt. Insoluble in water and alkali; soluble in acid, easily absorb carbon dioxide and water in exposed air. Median lethal dose (rat, abdominal cavity) 500mg/kg.
Last Update：2022-10-16 17:13:17
Yttriumoxide - Use
Open Data Verified Data
magnetic materials for microwave and important materials for military industry are manufactured, and are also used as optical glass. Yttrium oxide can increase the refractive index of special glass, reduce the dispersion index, used for large screen TV with high brightness fluorescent powder and other picture tube coating. For the manufacture of thin film capacitors and special refractory materials and high-pressure mercury lamps, lasers, storage components and other magnetic bubble materials. It is also used for artificial gem laser crystals, superconducting materials, etc. Lanthanide optical glass and high temperature and radiation resistant optical glass additives. It is an important additive in engineering ceramics such as silicon nitride and zirconia, and functional ceramics such as piezoelectric ceramics, optoelectronic ceramics, semiconductor ceramics, thermistor ceramics and capacitor ceramics. It is also used in the manufacture of thin film capacitors, special refractory materials, and magnetic bubble materials for high pressure mercury lamps, lasers, storage elements, etc.
Last Update：2022-01-01 09:06:55
Yttriumoxide - Safety
Open Data Verified Data
rats were injected intraperitoneally with LDso:500mg/kg. Inhalation of dust containing yttrium, occupational pneumoconiosis, its chloride has damage to the skin, can stimulate the mucous membrane of the eyes. The maximum allowable concentration of yttrium oxide 5mg/m3. Should be stored in a ventilated, dry place. Pay attention to moisture. Packaging breakage should be prevented during storage and transportation.
Last Update：2022-01-01 09:06:55
Yttriumoxide - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | yttrium oxide chemical formula Y2O3. Molecular weight 225.81. Light yellow cubic crystal or powder. Melting point 2410 ℃, relative density 5.01. Soluble in acid, insoluble in water and alkali. Preparation method: adjust the pH of yttrium salt solution to 2 with ammonia water, add saturated oxalic acid or ammonium oxalate solution under stirring until the precipitation is complete, then heat and mature in a water bath, filter, dry at 110 ℃, calcinate in air at 900 ℃ ~ 1000 ℃, or calcinate yttrium hydroxide at 900 ℃ in air, it can also be obtained by calcining yttrium carbonate in air at 800~900 ℃. |
| application | yttrium oxide is often used as a functional additive material due to its high dielectric constant, good heat resistance, strong corrosion resistance and a series of excellent physical properties, It is widely used in atomic energy, aerospace, fluorescence, electronics, high-tech ceramics and other fields. As a phosphor matrix material, it is used in the fields of display, lighting and marking; as a laser medium material, it is prepared into transparent ceramics with high optical properties, which can be used as a laser working medium to achieve room temperature laser output; as an upconversion luminescent matrix material, it is used in Infrared detection, fluorescent marking and other fields; made into transparent ceramics, which can be used for visible and infrared lenses, high-pressure gas discharge lamp tubes, ceramic scintillators, high-temperature furnace observation windows, etc; it can be used as a reaction vessel, high temperature resistant material, refractory material, etc.; as a raw material or additive, it is also widely used in high temperature superconducting materials, laser crystal materials, structural ceramics, catalytic materials, dielectric ceramics, high-performance alloys and other fields. |
| Preparation | Recover zirconia and yttria from yttria stabilized zirconia solid melt waste. Including solid melt waste preparation powder, acidification roasting, frit leaching, concentration and crystallization, water soluble precipitation, calcination and other processes: 1.1 preparation of powder: yttria stabilized zirconia solid melt waste drying and dewatering, removing inclusions, crushing to -0.175mm to prepare powder; 1.2 acidification roasting: the powder, sulfuric acid and acidification aid ammonium sulfate are mixed evenly in a reaction pot according to a solid-liquid ratio of 1: 2.5~3.5: 1.25~1.50, and acidified and roasted at a temperature of 200~320 ℃ for 30~50min to prepare acidified frit; 1.3 frit leaching: leaching the acidified frit with water or/and the mother liquor obtained by crystallization in step 1.4, and the solid-liquid ratio is 1: 2.5~3, the temperature is 85-95 ℃, the leaching time is 45-60min, the solid-liquid separation is carried out after the leaching is completed to obtain the zirconium-yttrium clear liquid; 1.4 concentration and crystallization: the zirconium-yttrium clear liquid is evaporated and concentrated, the concentrated material liquid is controlled to contain Zr 42.5-2.8mol/L acidity [H ]5.8-6.5mol/L, cooling crystallization, separating the mother liquid to obtain zirconium sulfate crystals, and leaving yttrium in the mother liquid; 1.5 preparing yttrium oxide: the mother liquor of step 1.4 is neutralized with ammonia water to pH8 ~ 9, after filtration and washing to obtain crude yttrium hydroxide, dissolving the crude yttrium hydroxide with hydrochloric acid to obtain yttrium solution, purifying the yttrium solution, heating to 80~90 ℃, controlling pH1 ~ 2, adding 2.5 times the amount of Y2O3 oxalic acid, precipitating yttrium oxalate, calcining yttrium oxalate at 800~900 ℃ for 2~3 hours, yttrium oxide is obtained. |
| toxicity | see cerium oxide products. |
| Use | Used to manufacture various ceramics, optical glass, phosphors, laser materials and refractory materials, and used as a catalyst for the synthesis of ethane from carbon monoxide and hydrogen Used as an additive material for phosphors and magnetic materials Mainly used to make single crystal, yttrium iron garnet, yttrium aluminum neodymium garnet stone and other composite oxides, these composite oxides can be used as magnetic materials for microwaves and important materials for military communication engineering due to their good high frequency performance. It can also be used as an advanced optical glass additive to make high-temperature transparent glass, ceramic material additives, X-ray sensitizing screen rare earth phosphors, high-brightness phosphors for large-screen TVs and other picture tube coatings. In addition, it is also used to manufacture film capacitors and special refractory materials, as well as bubble magnetic area materials for high-pressure mercury lamps, lasers, storage components, etc. It is used as an additive for making white hot gas lampshades, color TV phosphors, and magnetic materials. It is also used in the atomic energy industry. Scientific research reagents, biochemical research The manufacture of light sources in infrared spectrometers. Yarn covers for acetylene lamps and gas lamps. Color TV tube phosphor. Zirconia refractory stabilizer. Phosphor. Artificial gem laser crystals, superconducting materials and many cutting-edge applications in the electronics industry. |
| production method | the mixed rare earth obtained by decomposing brown yttrium niobium ore by extraction method contains about 4% Y 20350% and CeO2. it is fed with rare earth nitrate solution after cerium removal, extracted and grouped with yttrium-rich rare earth by N263-LiNO3 system, purified yttrium is extracted with N263-heavy solvent-NH4SCN system after acid dissolution, and the extracted raffinate after grouping is yttrium-rich rare earth, after direct concentration, filtration, and burning, yttrium oxide is produced. Its Y2(C2O4)3 → Y2O3 3CO2 3CO |
Last Update：2024-04-10 22:29:15
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