MolybdenumpowderNmicron
Molybdenum atomic absorption standard solution
CAS: 7439-98-7
Molecular Formula: Mo
MolybdenumpowderNmicron - Names and Identifiers
MolybdenumpowderNmicron - Physico-chemical Properties
| Molecular Formula | Mo |
| Molar Mass | 95.94 |
| Density | 10.3 g/mL at 25 °C (lit.) |
| Melting Point | 2617 °C (lit.) |
| Boling Point | 4612 °C (lit.) |
| Flash Point | -23°C |
| Water Solubility | Insoluble inwater. Soluble innitric acid andsulfuric acid. Slightly soluble inhydrochloric acid. |
| Solubility | H2O: soluble |
| Appearance | wire |
| Specific Gravity | 10.2 |
| Color | Gray |
| Exposure Limit | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3NIOSH: IDLH 5000 mg/m3 |
| Merck | 13,6257 |
| Storage Condition | no restrictions. |
| Stability | Stable. Powder is flammable. |
| Sensitive | Air Sensitive |
| Refractive Index | 2.81 (740 nm) |
| MDL | MFCD00003465 |
| Physical and Chemical Properties | For silver-white metal or gray-black powder (body-centered cubic crystal). Melting point 2610 °c. Boiling point 5560 °c. The relative density was 10.2. Soluble in hot concentrated nitric acid, hot concentrated sulfuric acid, aqua regia, slightly soluble in hydrochloric acid, insoluble in cold water, hot water, hydrofluoric acid and liquid ammonia. |
| Use | Used as drawn Molybdenum wire, molybdenum Rod, used in the bulb or cutting industry |
MolybdenumpowderNmicron - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R11 - Highly Flammable R67 - Vapors may cause drowsiness and dizziness R65 - Harmful: May cause lung damage if swallowed R62 - Possible risk of impaired fertility R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R48/20 - R38 - Irritating to the skin |
| 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. S16 - Keep away from sources of ignition. S9 - Keep container in a well-ventilated place. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 3264 8/PG 3 |
| WGK Germany | 3 |
| RTECS | QA4680000 |
| TSCA | Yes |
| HS Code | 81029600 |
| Hazard Class | 4.1 |
| Packing Group | III |
MolybdenumpowderNmicron - Upstream Downstream Industry
| Raw Materials | ammonium molybdate Hydrogen |
MolybdenumpowderNmicron - Nature
Open Data Verified Data
is silver-white metal or gray-black powder (body-centered cubic crystal). Melting point 2615 °c. Boiling point 4800 °c. The relative density was 10.2. Soluble in hot concentrated nitric acid, hot concentrated sulfuric acid, aqua regia, slightly soluble in hydrochloric acid, insoluble in water, hydrofluoric acid and liquid ammonia.
Last Update：2024-01-02 23:10:35
MolybdenumpowderNmicron - Preparation Method
Open Data Verified Data
industrial production molybdenum trioxide can be prepared by reducing molybdenum trioxide with hydrogen or by treating ammonium paramolybdate with acid or heating to decompose molybdenum trioxide, which is then reduced with hydrogen in a tubular electric furnace. Carbon can also be reduced to molybdenum powder, but the purity is poor.
Hydrogen reduction of molybdenum trioxide method: the reduction with hydrogen can be carried out in two stages. In the first stage, molybdenum trioxide is heated at 450~700 ℃, followed by the second stage of reduction at 900~1100 ℃ to obtain molybdenum powder.
Last Update：2022-01-01 11:06:17
MolybdenumpowderNmicron - Introduction
Hard and malleable. There is still a high intensity at very high temperatures. It is stable in the air at normal temperature and burns to produce molybdenum trioxide at high temperature. It can be combined with chlorine and bromine. Insoluble in hydrochloric acid and hydrofluoric acid. Soluble in concentrated sulfuric acid, nitric acid and aqua regia.
Last Update：2022-10-16 17:28:17
MolybdenumpowderNmicron - Use
Open Data Verified Data
Fmo-l is used for large slab, which is the raw material of molybdenum silicide electric heating element. Fmo-2 for silicon control disk, molybdenum plug and other raw materials. It can also be used in powder metallurgy materials, building materials, chemical and petroleum industries. Molybdenum is one of the essential trace elements in plants, which is used as a trace element fertilizer in agriculture.
Last Update：2022-01-01 11:06:16
MolybdenumpowderNmicron - Safety
Open Data Verified Data
molybdenum powder in case of high heat, open flame can burn or even explosion, and strong reaction with oxidant, the formation of molybdenum oxide. The product is packed in a clean polyethylene plastic bottle, the bottle cap should be tightened, the plastic bottle should be placed in a wooden box, and the surrounding area should be fixed with soft objects. Or the product is packed in an iron drum lined with a polyethylene plastic bag, with a net weight of 30kg per box (drum). The wooden case or iron drum shall have the words "moisture-proof", "fragile" and "upward. Products should be stored in dry, ventilated and acid, alkali atmosphere in the warehouse, to prevent oxidation. The product shall be protected from rain and moisture during transportation, and the package shall not be subject to severe collision to prevent breakage of the package. The storage period of molybdenum powder should not exceed half a year. When the skin or eyes contact molybdenum powder should be washed with soap water and water, and severe cases should be treated. Drink appropriate amount of water to induce vomiting. When fire occurs, use dry powder fire extinguishing agent to rescue.
Last Update：2022-01-01 11:06:18
MolybdenumpowderNmicron - Reference Information
| resistivity | 5.0 ***-CM, 20°C |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | Molybdenum is a chemical element whose chemical symbol is Mo, it has an atomic number of 42 and is a gray transition metal. Its hard and tough, high melting point, thermal conductivity is relatively high, at room temperature does not occur with the air oxidation reaction. As a transition element, it is easy to change its oxidation state, and the color of molybdenum ion will change with the change of oxidation state. |
| Discovery History | molybdenum ores are known in history, but the discovery of this element (I. E., distinguishing it from other metals) was made in 1778 by Karl William Scheler. The metal was first isolated in 1781 by Peter sized. |
| Source | molybdenum has no natural metal form on Earth, but occurs as various oxides in minerals. In the form of a single element, molybdenum is a gray metal, gray cast iron color, is the melting point of all elements ranked sixth. It is easy to form hard, stable carbides in the alloy, so most of the world's molybdenum products (about 80%) are used as some kind of iron alloy, including high strength alloys and high temperature alloys. |
| efficacy and function | molybdenum element is an indispensable trace element for the formation of uric acid. Molybdenum is an important component of a variety of enzymes, involved in the use of iron in the body, can prevent anemia, promote development, and can help carbohydrate and fat metabolism. Maintain myocardial energy metabolism and prevent Keshan disease. Maintains the elasticity of the arteries, prevents cardiovascular diseases. Maintain immune function. Regulates the thyroid gland. Prevent dental caries, kidney stones and cancer. Molybdenum is an important component of the iris of the eye. |
| Applications | due to its unique mechanical and chemical properties, molybdenum has become an outstanding material that meets the most demanding requirements. This has the advantage of an extremely high melting point, a low coefficient of thermal expansion and a good thermal conductivity, and thus is widely used in many different industrial fields. Molybdenum is a special material in the name of "generalist". Its wide range of applications include: the production of lighting industry materials and filaments, power electronics industry with semiconductor board, sputtered Palladium material for glass melt electrodes and hot zones of high temperature furnaces and coatings for solar cells and flat panel displays. |
| preparation | metallic molybdenum was prepared by reducing purified molybdenum trioxide or ammonium molybdate with hydrogen. When molybdenum is a by-product of copper mining, a concentrate of copper and molybdenum is first produced, and the ore is then separated by a stepwise flotation process. MoS2 concentrate contains more than 85% MoS2, while roasted MoO3 typically contains at least 57% molybdenum and less than 0.1% S. |
| safety information | Molybdenum Powders and dusts are flammable. Do not inhale or ingest gases containing compounds of molybdenum. |
| toxicity | see Molybdenum trioxide. |
| purpose | Fmo-1 is used for large slab, and is the raw material of molybdenum silicide electric heating element. Fmo-2 for silicon control disk, molybdenum plug and other raw materials. used for the preparation of phosphomolybdate and molybdenum compounds used for smelting molybdenum steel, drawing Molybdenum wire, etc. used as hot hydrogen generator, Gel propellant, combustion activator, Catalyst, water cleaning adsorbent, sintering active agent and so on easy to draw into Molybdenum wire, sheet, belt, rod and other used in the electronic industry, also used in alloy steel and various tool steel used for drawing Molybdenum wire, molybdenum Rod, used in the bulb or cutting Industry is mainly used for environmental monitoring and related analysis and test method evaluation, quality control, capability verification and technical arbitration. |
| production method | industrial production can be made by reduction of molybdenum trioxide with hydrogen; Or by acid treatment or heat decomposition of ammonium molybdate to obtain molybdenum trioxide, it is obtained by reduction with hydrogen. The hydrogen reduction molybdenum trioxide method can be carried out in two stages using hydrogen reduction. In the first stage, molybdenum trioxide is heated at 600 to 700 ° C., followed by a second stage of reduction at 1000 to 1100 ° C. To obtain a final molybdenum powder. MoO3 H2 → MoO2 H2OMoO2 2H2 → Mo 2H2O |
| category | combustible solid |
| toxicity grade | poisoning |
| Acute toxicity | cannula-rabbit LDL0: 70 mg/kg |
| flammability hazard characteristics | high temperature, flammable in air; Release of toxic molybdenum compounds |
| storage and transportation characteristics | warehouse low temperature, ventilation, dry |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
| Occupational Standard | TWA 5 mg/m3; Tel 10 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentrations | 5,000 mg Mo/m3 |
Last Update：2024-04-09 20:52:54
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Product Name: Molybdenum atomic absorption standard solution Request for quotationTel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Multiple Specifications
Product Name: Molybdenum Standard Solution (1000mg/L) Request for quotationCAS: 7439-98-7
Tel: 0714-3999186
Email: 2853786052@qq.com
Mobile: 86+15671228036
QQ: 2853786052
Wechat: 15671228036
Product Name: Molybdenum Visit Supplier Webpage Request for quotation
CAS: 7439-98-7
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 7439-98-7
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
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Raw Materials for MolybdenumpowderNmicron