Bismuth metal powder
Bismuth
CAS: 7440-69-9
Molecular Formula: Bi
Bismuth metal powder - Names and Identifiers
Bismuth metal powder - Physico-chemical Properties
| Molecular Formula | Bi |
| Molar Mass | 208.98 |
| Density | 9.8 g/mL at 25 °C (lit.) |
| Melting Point | 271 °C (lit.) |
| Boling Point | 1560 °C (lit.) |
| Water Solubility | insoluble |
| Vapor Presure | <0.1 mm Hg ( 20 °C) |
| Appearance | shot |
| Specific Gravity | 9.80 |
| Color | Silver-white or red |
| Exposure Limit | ACGIH: TWA 2 ppm; STEL 4 ppmOSHA: TWA 2 ppm(5 mg/m3)NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| Merck | 13,1256 |
| Storage Condition | no restrictions. |
| Stability | Stable. Incompatible with strong acids, strong oxidizing agents, nitrosyl fluoride, fused ammonium nitrate, interhalogen compounds, chlorine. Finely-divided powder is highly flammable. |
| MDL | MFCD00134033 |
| Physical and Chemical Properties | Silver-white or reddish metal, metallic luster, brittle and hard, orthorhombic coarse-grained crystals. Melting point 271.3 °c. Boiling Point (1560±5) °c. The relative density was 9.80. Soluble in hot sulfuric acid, nitric acid, aqua regia, slowly soluble in hot hydrochloric acid, insoluble in water. Stable at room temperature, heating is a light blue flame and combustion, and the formation of yellow or brown bismuth oxide. The molten metal increases in volume after condensation. |
| Use | Used as analytical reagents, coolant for atomic reactors, and also for the preparation of high-purity bismuth compounds |
Bismuth metal powder - Risk and Safety
| Risk Codes | R34 - Causes burns R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R8 - Contact with combustible material may cause fire |
| Safety Description | S16 - Keep away from sources of ignition. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 3264 8/PG 3 |
| WGK Germany | 1 |
| RTECS | EB2600000 |
| TSCA | Yes |
| HS Code | 81060010 |
| Hazard Class | 8 |
| Packing Group | III |
Bismuth metal powder - Upstream Downstream Industry
| Raw Materials | Bismuth |
Bismuth metal powder - Nature
Open Data Verified Data
White or reddish metal, metallic luster, brittle and hard. Orthorhombic system. Melting point 271 ℃; Boiling point 1420 ℃,d4 20 9.78; Broken 271 10. 07. Soluble in hot sulfuric acid, nitric acid, aqua regia, slowly soluble in hot hydrochloric acid, insoluble in water. Stable at room temperature, heating is a light blue flame and combustion, and the formation of yellow or brown bismuth oxide. The volume of molten metal increases after condensation.
Last Update：2025-06-10 22:55:16
Bismuth metal powder - Preparation Method
Open Data Verified Data
high purity bismuth was obtained by melting and refining with bismuth as raw material.
Last Update：2025-06-10 22:55:16
Bismuth metal powder - Introduction
It is a rare element. The metallic bismuth is silvery white with a slightly rose red surface. It has a strong metallic luster and is an orthorhombic crystal.
Last Update：2022-10-16 17:28:22
Bismuth metal powder - Application
Open Data Verified Data
It is mainly used for the preparation of compound semiconductor materials, Thermoelectric refrigeration materials, solders and liquid cooling carriers in nuclear reactors.
Last Update：2025-08-19 16:24:40
Bismuth metal powder - Safety
Open Data Verified Data
can cause kidney and liver poisoning, gums, cheeks, colon mucosa black spots, and bad breath, salivation, mouth surface dermatitis, skin and sticky blue bismuth line. Should be stored in a cool, ventilated, dry warehouse. The package is sealed and cannot be co-stored with inorganic acids and flammable materials. Protection against rain and sun exposure during transport.
Last Update：2025-06-10 22:55:16
Bismuth metal powder - Reference Information
| resistivity | 129 ***-CM, 20°C |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | bismuth molecular formula Bi, bismuth powder is a powder of non-ferrous metals, the properties are light gray. Its use is very wide, mainly for the preparation of bismuth products, bismuth alloys and bismuth compounds. |
| physical and chemical activity | bismuth powder can spontaneous combustion in chlorine, with bromine, iodine, sulfur, selenium is directly combined to form a trivalent compound. Insoluble in dilute hydrochloric acid and dilute sulfuric acid, soluble in nitric acid and concentrated sulfuric acid to generate trivalent bismuth salt. Bismuth was discovered in 1753 in infeluschian. There are two forms of Free State and compound state in nature. The main minerals are bismuth ore, bismuth and so on. The abundance in the crust is 2.0 x 10-5%. It is mainly used for making low melting point alloy (melting point above 45 ℃ and below 100 ℃), and is used for automatic fire extinguishing device, fuse and solder in fire fighting and electrical industry. It is also used to make movable-type alloy, medicine, etc. Bismuth trioxide is obtained from calcined bismuth ore, and then is reduced by co-heating with carbon to obtain bismuth. |
| Main uses | main uses of bismuth:(1) for fire protection equipment, metal joints, A component of a low-melting (fusible) alloy for use as a thermally conductive medium. (2) for the preparation of a medicament for the treatment of gastropathy and syphilis. (3) for electrical devices (thermoelectric alloys and permanent magnets). (4) use as a catalyst, particularly in the preparation of acrylonitrile. (5) High Temperature Ceramics and pigments. |
| preparation | -a kind of ultrafine bismuth powder production method, according to the following steps: 1) preparation of bismuth chloride solution: take density 1. 4g/cm3 of bismuth chloride stock solution, added with hydrochloric acid 6% acidified pure water solution; The volume ratio of acidified pure water solution and bismuth chloride stock solution is 1:2;2) synthesis: to the prepared bismuth chloride solution, add the surface-cleaned zinc ingot; Start the displacement reaction; Observe the end point of the reaction, and when the end point of the reaction is reached, take out the undissolved zinc ingot and precipitate for 4 hours; the observation and judgment of the end point of the reaction is based on the following: bubbles appear in the solution participating in the reaction; 3) separating bismuth powder: extracting the supernatant of the precipitate in step 2) and recovering zinc by a conventional method; the remaining precipitated bismuth powder was washed 8 times with acidified pure water solution containing 6% hydrochloric acid, and then rinsed with pure water to neutral; After rapidly drying the bismuth powder with a centrifuge, immediately soak the bismuth powder with anhydrous ethanol, and then spin dry; 4) dry: the bismuth powder treated in step 3) is sent to a vacuum dryer with a temperature of 60±1 ° C for drying, A -300-mesh bismuth powder finished product was prepared. |
| Application | for the preparation of high purity semiconductor materials and high purity bismuth compounds. Used as a coolant for atomic reactors. used as analytical reagents, coolant for atomic reactors, and also for the preparation of high-purity bismuth compounds used in the manufacture of low melting point alloys, nuclear reactor coolant, bismuth amalgam, bismuth salts, etc. used as coolant for atomic reactors for the preparation of high-purity bismuth compounds used for bismuth compounds, preparation of low melting point alloy and flux It is mainly used to prepare bismuth products and bismuth alloys. |
| production method | the high purity bismuth product is prepared by using bismuth as raw material and refined by regional melting method. |
| category | flammable solid |
| toxicity grade | high toxicity |
| Acute toxicity | unspecified-human LDL0: 221 mg/kg |
| flammability hazard characteristics | near open flame flammability; toxic smoke emitted by reaction with acid or acid mist |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; With food raw materials acid, aluminum, separate storage of halogen, etc. |
| extinguishing agent | dry powder, sand, carbon dioxide, water mist |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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Raw Materials for Bismuth metal powder