Rhodium black 3N
Rhodium atomic absorption standard solution
CAS: 7440-16-6
Molecular Formula: Rh
Rhodium black 3N - Names and Identifiers
Rhodium black 3N - Physico-chemical Properties
| Molecular Formula | Rh |
| Molar Mass | 102.91 |
| Density | 12.41 g/cm3 (lit.) |
| Melting Point | 1966 °C (lit.) |
| Boling Point | 3727 °C (lit.) |
| Water Solubility | Insoluble |
| Appearance | wire |
| Specific Gravity | 12.41 |
| Color | Red |
| Exposure Limit | ACGIH: Ceiling 2 ppmOSHA: Ceiling 5 ppm(7 mg/m3)NIOSH: IDLH 50 ppm; Ceiling 5 ppm(7 mg/m3) |
| Merck | 14,8186 |
| Storage Condition | Inert atmosphere,Room Temperature |
| MDL | MFCD00011201 |
| Physical and Chemical Properties | It is a gray-white metal (face-centered cubic crystal). Melting point (1966±3) °c. Boiling Point (3727±100) °c. The relative density was 12.4. Soluble in sulfuric acid and hydrochloric acid mixture, concentrated sulfuric acid, aqua regia, insoluble in cold water and hot water. |
| Use | For the electronics industry |
Rhodium black 3N - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes R34 - Causes burns R23 - Toxic by inhalation |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. S16 - Keep away from sources of ignition. S22 - Do not breathe dust. S36 - Wear suitable protective clothing. S17 - Keep away from combustible material. 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. |
| UN IDs | UN 3089 4.1/PG 2 |
| WGK Germany | 3 |
| RTECS | VI9069000 |
| TSCA | Yes |
| Hazard Class | 4.1 |
| Packing Group | III |
Rhodium black 3N - Reference Information
| resistivity | 4.33 ***-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 | as an important member of the platinum group metals, rhodium has its unique physical and chemical properties, because of its high catalytic activity and selectivity, it has been widely used in the petroleum industry, automobile exhaust gas purifier, catalytic hydrogenation and so on, so it has a high demand in the market. |
| Silk | The silk has a resistivity of 4.67 × 10 − 2 Ω · mm2/m, a tensile strength of 726MPa, and an elongation of 46%. Using high frequency furnace argon protection smelting, remelting 2~3 times, bottom injection, hot processing-cold processing into 0.02mm filament. Is a good high temperature thermocouple material. Rh-PtRh20 thermocouple high temperature stability, without strict cold end compensation, the use of temperature 1800. In addition, there were Rh-PtRe8 and Rh-RhRe8. The silk is in the form of a fine filamentous metallic Rhodium processing material. chemical properties: bulk modulus of elasticity: GPa 380 enthalpy of atomization: kJ /mol @ 25 ℃ 556.5 heat capacity: J /(mol · K) 24.98 conductivity: 10 ^ 6/(cm · Ω ) 0.211 |
| Properties of rhodium | electroplated rhodium is a rare noble metal, which is mainly derived from natural Rhodium. The color is silver white, metallic luster, opaque. Hard 4~4.5, the relative density of 12.5. The high melting point was 1955 °c. Chemical stability. Because of the corrosion resistance of rhodium gold, and gloss is good, so it is mainly used in the electroplating industry, the plating on the surface of other metals, the coating color is strong, not easy to wear, good reflective effect. Valences 2, 4 and 6. The first ionization energy is 7.46 electron volts. At moderate temperatures, it is also resistant to most common acids (including aqua regia). Chemical reactions with hot concentrated sulfuric acid, hot hydrobromic acid, sodium hypochlorite and free halogens are possible at 200-600 °c. It does not react with many molten metals, such as gold, silver, sodium and potassium, and molten bases. peripheral electron layer arrangement: 4d8 5s1 electron layer: K-L-M-N-O nuclear charge: 45. |
| characteristics and application | platinum group metals with high melting point, high strength, stable electrothermal properties, high resistance to electrical discharge erosion, excellent corrosion resistance, high temperature oxidation resistance, good catalytic activity, widely used in automobile exhaust purification, chemical, aerospace, glass fiber, electronic and electrical industries and other fields, but plays a key role, known as "industrial vitamin. In addition to making alloys, Rhodium can be used as a bright and hard coating of other metals, for example, on silver or camera parts. The evaporation of the rhodium onto the glass surface, resulting in a thin layer of wax, results in a particularly good mirror surface. (1) high catalytic activity and selectivity, long life. Rhodium and its alloys, rhodium-containing compounds, complex catalysts can be used in the production of aldehydes and acetic acid, automobile exhaust gas purification, ammonia oxidation of nitric acid production, plastics, synthetic fibers, drugs, pesticides and other organic chemical synthesis, fuel cell electrodes. (2) the visible light reflectivity is high and stable. Commonly used in special industrial mirror, headlight, radar and other reflective surface coating. (3) high melting point, oxidation resistance, corrosion resistance, is one of the most stable chemical properties of the metal. Can be used as a corrosion-resistant container, the atmosphere can be used at a high temperature of 1850 deg C, pure rhodium Crucible can be used for the production of calcium tungstate and lithium niobate single crystal. (4) The rhodium coating has high hardness (7500 ~ 9000MPa), wear resistance, corrosion resistance and stable contact resistance. Rhodium-plated composite material is an excellent electrical contact material. Rhodium can also be used for the coating of jewelry and other industrial instruments and gas sensors. (5) modification. Rhodium can form a solid solution with platinum, palladium and other metals, which can strengthen the matrix by solid solution, improve the melting point, recrystallization temperature and corrosion resistance of the matrix, and reduce the loss of oxidation volatilization, among them, platinum-rhodium alloy is an excellent precious metal temperature measurement material; The compounds formed by Rhodium and titanium, zirconium, hafnium, tantalum, niobium and other metals play a role in Dispersion strengthening and increase thermal stability of the rhodium-containing alloy; the processing properties of iridium can be improved by adding rhodium to Iridium. (6) The work hardening rate is high, and cold working can be performed after hot working into a certain size. (7) it is expensive and is usually used only as an additive element except for special use. |
| Noble metal material | rhodium is a silver-white, hard metal. Rhodium has high melting point, high strength, electrothermal stability, high resistance to electric spark erosion, excellent corrosion resistance, high temperature oxidation resistance and good catalytic activity, widely used in aerospace electronics and electrical industries and other fields. |
| material properties | 64% discoverer WRA Ston (1803) atomic Number 45 atomic weight 102.9 melting point 1964°C boiling point 3695°C density 12.41g/cm3 crystal structure face-centered cubic Young's modulus 380 GPa shear modulus 150 GPa Mohs hardness 6 coefficient of linear thermal expansion 8.2 µm/(m · K) thermal conductivity 150W/(m · K) resistivity 43.3 n Ω · m |
| Application | used in electrical instrument, fine alloy manufacturing and chemical industry. used in electronic industry |
| production method | industrial production of Rhodium can be produced from ore by dry process; Copper, the by-products generated in the production process of preparing copper and nickel from nickel sulfide ore are used as raw materials and are prepared by wet smelting. The residual components after extraction of nickel and copper were used as raw materials by wet method, and extracted by adding aqua regia. After filtration, the filtrate was used to extract platinum and palladium. The residue is treated by adding nitric acid and the like, filtered, and ammonium nitrate is added to the filtrate for reaction to generate Rhodium ammonium nitrate precipitate, which is refined and filtered to reduce Rhodium ammonium nitrate with hydrogen, approximately 99.99% of the finished Rhodium was obtained. |
| category | flammable solid |
| flammability hazard characteristics | flammability |
| storage and transportation characteristics | warehouse ventilation at low temperature; Anti-Flame; Anti-static |
| fire extinguishing agent | water mist, carbon dioxide, dry powder, foam |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-and health-threatening concentration | 100 mg Rh/m3 |
Last Update：2024-04-09 21:54:55
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Multiple Specifications
Product Name: Rhodium Standard Solution (1000mg/L) Request for quotationCAS: 7440-16-6
Tel: 0714-3999186
Email: 2853786052@qq.com
Mobile: 86+15671228036
QQ: 2853786052
Wechat: 15671228036
Product Name: Rhodium on carbon Visit Supplier Webpage Request for quotation
CAS: 7440-16-6
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 7440-16-6
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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