1304-76-3
Bismuth oxide
CAS: 1304-76-3;12640-40-3
Molecular Formula: Bi2O3
1304-76-3 - Names and Identifiers
| Name | Bismuth oxide |
| Synonyms | C.I. 77160 Bismuth oxide Bismuth trioxide Einecs 235-736-3 |
| CAS | 1304-76-3 12640-40-3 |
| EINECS | 235-736-3 |
| InChI | InChI=1/4Bi.6O/rBi4O6/c5-1-6-3-8-2(5)9-4(7-1)10-3 |
1304-76-3 - Physico-chemical Properties
| Molecular Formula | Bi2O3 |
| Melting Point | 825℃ |
| Boling Point | 1890℃ |
| Water Solubility | INSOLUBLE |
| Solubility | Soluble in hydrochloric acid or nitric acid, insoluble in water. |
| Appearance | Yellow crystal |
| Storage Condition | Room Temprature |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00003462 |
| Use | This product is for scientific research only and shall not be used for other purposes. |
1304-76-3 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - 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. S36/37 - Wear suitable protective clothing and gloves. |
1304-76-3 - Nature
Open Data Verified Data
pure bismuth trioxide has a-type and p-type. a-type yellow monoclinic crystal, relative density 8.9, melting point 825 ℃, soluble in acid, insoluble in water and alkali. p-type is bright yellow to orange, square crystal system, relative density 8. 55, melting point 860 ℃, soluble in acid, insoluble in water. It is easily reduced to metallic bismuth by hydrogen, hydrocarbons, and the like.
Last Update：2024-01-02 23:10:35
1304-76-3 - Use
Open Data Verified Data
electronic ceramic powder material. It is used in the manufacture of electronic components such as zinc oxide arresters, ceramic capacitors, piezoelectric ceramics and varistors. The addition of bismuth oxide improves and enhances the performance of the component.
Last Update：2022-01-01 08:54:36
1304-76-3 - Preparation Method
Open Data Verified Data
to a bismuth nitrate solution (80 to 90 ° C.), a sodium hydroxide aqueous solution containing no carbon dioxide was added dropwise and mixed. The solution was kept alkaline during the precipitation process to produce a white, volume-expanded bismuth oxide hydrate Bi(OH)3 precipitate. The solution was heated and stirred for a short time to dehydrate into yellow bismuth trioxide. The bismuth oxide was washed by decantation with water, filtered and dried to obtain a finished bismuth oxide.
Last Update：2022-01-01 09:01:00
1304-76-3 - Safety
Open Data Verified Data
In iron drum, 25kg net weight per barrel. Store in a cool, ventilated, dry warehouse.
Last Update：2022-01-01 11:05:43
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