C.I. 77265
Graphite
CAS: 7782-42-5
Molecular Formula: C24X12
C.I. 77265 - Names and Identifiers
| Name | Graphite |
| Synonyms | Graphite C.I. 77265 Graphitesheet Graphite powder C.I. Pigment Black 10 Graphite powder ,flake (C) Graphite gas analysis crucible Graphene On Ultra-Fine 2000 Mesh Copper TEM Grids |
| CAS | 7782-42-5 |
| EINECS | 231-955-3 |
| InChI | InChI=1/C |
C.I. 77265 - Physico-chemical Properties
| Molecular Formula | C24X12 |
| Molar Mass | 288.26 |
| Density | 2.2g/mLat 25°C |
| Melting Point | 3652-3697°C(lit.) |
| Boling Point | 4830°C |
| Water Solubility | Insoluble in water. |
| Appearance | Grey black powder |
| Specific Gravity | 2.25 |
| Color | black |
| Exposure Limit | ACGIH: TWA 2 mg/m3OSHA: TWA 15 mg/m3; TWA 5 mg/m3NIOSH: IDLH 1250 mg/m3; TWA 2.5 mg/m3 |
| Merck | 13,4554 |
| PH | 5-6 (50g/l, H2O, 20℃)(slurry) |
| Storage Condition | no restrictions. |
| Sensitive | Air & Light Sensitive |
| MDL | MFCD00144065 |
| Physical and Chemical Properties | Melting point 3652-3697°C |
| Use | Used for hot die forging pressure lubrication and cooling insulation release, used as high temperature resistant and corrosion resistant lubricant base material, also used for precision casting molding sand and graphite anode and catalyst carrier |
C.I. 77265 - Risk and Safety
| Risk Codes | R36/37 - Irritating to eyes and respiratory system. R20 - Harmful by inhalation |
| 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 S22 - Do not breathe dust. |
| WGK Germany | 1 |
| RTECS | MD9659600 |
| TSCA | Yes |
| HS Code | 3801 10 00 |
C.I. 77265 - Upstream Downstream Industry
| Raw Materials | Graphite Hydrofluoric Acid Hydrochloric acid |
C.I. 77265 - Reference
| Reference Show more | 1. Zhang, Congcong, et al. "Graphene oxide reduced and modified by environmentally friendly glycylglycine and its excellent catalytic performance." Nanotechnology 25.13 (2014): 135707. 2. [IF=8.131] Hong Zhou et al."Graphene oxide–acaricide nanocomposites advance acaricidal activity of acaricides against Tetranychus cinnabarinus by directly inhibiting the transcription of a cuticle protein gene."Environ Sci-Nano. 2021 Nov;8(11):3122-3137 |
C.I. 77265 - Nature
Open Data Verified Data
is a carbonaceous element crystalline mineral, and the chemical composition of graphite is carbon. Its crystal lattice is hexagonal layered structure, which belongs to hexagonal system and has complete layered cleavage. Its natural floatability is very good. Graphite is soft, black and gray; Greasy, can contaminate the paper. The hardness is 1~2, and the hardness can be increased to 3~5 along the vertical direction with the increase of impurities. The relative density is 1.9 A 2.3. In the isolation of oxygen conditions, its melting point at 3000 degrees Celsius, is one of the most temperature resistant minerals. The graphite ore is divided into two main types: the scale of the Crystal graphite ore and the hidden clay of the Crystal graphite ore. With high temperature resistance, oxidation resistance, corrosion resistance, thermal shock resistance, high strength, good toughness, high self-lubricating strength, graphite or a good conductor of heat and electricity, the thermal conductivity also increased, and the thermal conductivity of graphite is opposite, the reaction occurs with strong oxidants (such as fluorine, chlorine trifluoride and potassium peroxide).
Last Update：2024-01-02 23:10:35
C.I. 77265 - Preparation Method
Open Data Verified Data
- mineral processing method of crystalline graphite: the natural floatability of crystalline graphite is good, and the flotation method is a commonly used method. In the flotation process, kerosene and diesel oil are used as collectors, No. 2 oil and No. 4 oil are used as foaming agents, lime and sodium carbonate are used as regulators, and water glass is used as inhibitor.
- mineral processing method of cryptocrystalline graphite: The Crystal of cryptocrystalline graphite is extremely small, the graphite particles are often embedded in clay, the separation is difficult, and the separation cost is increased. Because the carbon content of the raw ore is about 60% ~ 80%, the taste is high, so many graphite mines will be directly crushed and processed into graphite powder products.
- the purification and processing of graphite products; Ultra-fine and high purity are the higher requirements of modern industry for graphite quality. At present, chemical purification method is mainly used. The most mature process for chemical purification of graphite is to melt caustic with graphite at 700 ℃, then wash to neutral, treat and wash with hydrochloric acid, and finally obtain graphite with carbon content as high as 98% ~ 99%. High purity graphite can also be obtained by hydrofluoric acid treatment.
Last Update：2022-01-01 09:07:15
C.I. 77265 - Introduction
It is a carbon allotment, often containing a small amount of iron and silica. Can conduct electricity. Chemically inactive. It is resistant to acid and alkali. Can be oxidized to organic acids by strong oxidants.
Last Update：2022-10-16 17:28:42
C.I. 77265 - Use
Open Data Verified Data
The main use of graphite is the production of refractory materials, including refractory bricks, continuous casting powder, casting core, casting detergent and high temperature resistant materials. Graphite is still one of its main applications as a carburizing agent in steelmaking industry. It is widely used in the electrical industry as a coating for electrodes, brushes, carbon rods, carbon tubes, positive electrodes for Mercury rectifiers, graphite gaskets, television picture tubes, etc. The anode of the electrolytic cell in the resistance furnace for producing Emery, the electrolytic metal magnesium, aluminum and sodium are all graphite electrodes. Graphite is often used as a lubricant in the machinery industry. Graphite wear-resistant materials can operate at temperatures of -200 to 2000 °c and at very high sliding speeds in the absence of lubricating oil. Graphite has good chemical stability, corrosion resistance and thermal conductivity, and is widely used in petrochemical industry, hydrometallurgy, acid-base production, synthetic fiber, paper and other industrial sectors, for the production of heat exchangers, reaction tanks, condensers, combustion Tower, absorption tower, cooler, heater, filter, pump, etc. Graphite has good performance of neutron deceleration, atomic reactor used as moderator, uranium graphite reactor is a more widely used atomic reactor. In the defense industry, graphite can be used to make nozzles for solid fuel rocket, nose cones for missiles, parts for Astronautical equipment, thermal insulation and anti-radiation materials. Semi-metallic friction materials are made for use in high-speed equipment such as brakes and clutch plates for aircraft, trucks, and off-road vehicles. Graphite is also a polishing agent and rust inhibitor for glass and paper making in light industry. It is a raw material for the manufacture of pencil, ink, black paint, ink and artificial diamond. Because graphite has many excellent properties, it is widely used in metallurgy, machinery, electrical, chemical, textile, national defense and other industrial sectors.
Last Update：2022-01-01 09:07:16
C.I. 77265 - Safety
Open Data Verified Data
exposure to natural graphite may produce progressive or disabling pneumoconiosis, including Head Pain, Cough, depression, decreased appetite, Dyspnea, black sputum, some drug abusers may be asymptomatic for many years and then suddenly disabled. Artificial graphite can also produce pneumoconiosis. Staff should be protected. Do not contact with strong oxides such as fluorine, chlorine difluoride, and potassium peroxytetra chloride during storage and transportation.
Last Update：2022-01-01 09:07:17
C.I. 77265 - Reference Information
| resistivity | (Electrical resistivity: surface 0.06/sq, sheet 2.7 μm) |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | due to its special properties, graphite is an essential mineral raw material for traditional industries and strategic emerging industries, it is widely used in the field of science and technology engineering. Graphite is the dominant mineral resource in China, and its output and export volume are dominant in the world market. |
| graphite sheet | with the acceleration of the upgrading of electronic products and Mini, the growing need for thermal management of high-integration and high-performance electronic devices. This new natural graphite solution has the advantages of high heat dissipation efficiency, small occupied space, light weight, uniform heat conduction in two directions, elimination of "hot spot" area, shielding of heat sources and components while improving the performance of consumer electronics. graphite heat dissipation materials are widely used in lighting and other electronic products. Graphite heat dissipation materials have been widely used in the communication industry, medical equipment, memory, LED substrate and other heat dissipation. |
| graphite sheet heat dissipation principle | a typical thermal management system is composed of an external cooling device, a radiator and a thermal section. An important function of the heat sink is to create a maximum effective surface area on which heat is transferred and carried away by an external cooling medium. Graphite heat sink is through the heat evenly distributed in the two-dimensional plane to effectively transfer the heat, to ensure that the components under the temperature of the work. properties: the surface can be combined with metal, plastic, self-adhesive and other materials to meet more design functions and needs. excellent thermal conductivity: 150 ~ 1200W/m.k, better than the thermal conductivity of metal. It is light in weight, soft in specific gravity range of only 1.0-1.3, and easy to operate. low thermal resistance. Color black. Thickness of graphite sheet: 0.012-1.0mm glue: 0.03mm ultrathin 0.012MM Thermal conductivity plane conduction 300-1200W/m.k vertical conduction 20-30W/m.k temperature resistance: 400 ℃ low thermal resistance: 40% lower than aluminum, 20% lower than copper light weight: 25% lighter than aluminum, 75% lighter than copper high thermal conductivity: graphite fins can be smoothly attached to any plane and curved surface, and can be cut in any form according to the needs of customers. |
| Applications | mainly used in metallurgy, machinery, electronics, chemical industry, Crucible, magnesia carbon brick, pencil, brush, battery, picture tube coatings, chemical catalysts, etc. used as high temperature resistant, corrosion resistant lubricant base material, precision casting molding sand, rubber, plastic filler (can improve the rubber, plastic wear resistance and electrical conductivity), is a metal alloy and Powder Metallurgy of carbon raw materials, used to make carbon film resistance. It is also used as a gasket coating for high-pressure steam piping and high-temperature piping connectors. It is also used as a carrier for graphite anode and catalyst. It is mainly used in the battery industry as a positive conductive material, the aerospace industry as a friction material, the nuclear industry as an atomic reactor, a deceleration material, and is also widely used in metallurgy, machinery, electronics, chemicals, textiles, in food and other industries. The Metallurgical Industry is used in the manufacture of graphite crucibles and coatings for sand-turning mold surfaces, steel-making furnace linings and Mold Fluxes. The electrical industry is used as an electrode, a brush, a conductive material for a positive electrode of a battery, a carbon tube, and the like. The chemical industry is used for acid and alkali resistant equipment and high temperature and high pressure seals, as well as catalyst materials for the fertilizer industry. It is also used in lubricants, anti-corrosion paint, pigments, pencil lead, powder, neutron moderator in atomic reactor and preservatives in aerospace industry. used as lubricant for drawing refractory metals (such as tungsten wire, Molybdenum wire, etc.), coating agent for casting non-ferrous metal thin parts at high temperature, thermal insulation agent for superheated steam and steam cylinder turbine propeller, finishing agents for the photographic plate industry can be used to increase electrical conductivity, high temperature insulation, chemical inertness, etc. It can also be used as an opaque, adhesive, saturated, non-oil high temperature (600 ° C) lubricating material. The water agent is used as a lubricant for drawing refractory metals, a molding agent for the glass industry, a material for increasing electrical conductivity and high-temperature thermal insulation, and a screen or a conductive film for the electronics industry. The powder is used as the base material of high temperature resistant lubricant, the base material of corrosion resistant lubricant, the filling material of rubber and plastic, the electric cathode of carbon membrane and the preparation of electro-hydraulic. The oil agent is used as a lubricant, a high-temperature sealing grease, a release agent, and the like. |
| production method | the raw material mineral graphite is purified by hydrofluoric acid and hydrochloric acid to obtain pure graphite powder. The first purification: Raw material graphite content of about 89%, containing silica, iron and other impurities. Graphite powder, hydrochloric acid, and hydrofluoric acid were added to a reaction tank lined with vinyl chloride, and the mixture was heated to 120 ° C. With steam and stirred for several hours, and then placed in a centrifuge and washed with water until neutral. The purified graphite is dried by air flow dryer, and then crushed to a particle size of 325 mesh with a universal pulverizer, and then pulverized by air flow, with a particle size of about 1.5u. The graphite powder pulverized by air flow is mixed with pure slurry and vibrated in the vibration mill for several days, and the material is classified according to different sedimentation velocities of different graphite particles in water. After the classification of the graphite material, because after vibration mill treatment, mixed with more impurities, the need for a second purification, purification method and the first purification of the same. The ash content of the purified graphite powder is not more than 0.5%, and the corresponding stabilizer is mixed with the corresponding stabilizer according to the application, and the mixture is ball-milled in a ball mill to obtain various finished products. For example, an oil-forming agent, a powder, an aqueous agent, and the like are formulated. The natural flake graphite with hydrochloric acid and hydrofluoric acid is treated by chemical purification, and then washed, separated, dried and crushed under high pressure. The powder obtained is added with stabilizer and binder, the graphite water agent was prepared by emulsifying and grinding to acceptable fineness. chemical purification method High-purity graphite is obtained by mixing graphite powder and sodium hydroxide, melting, water immersion, acid leaching, washing, dehydration and drying. Acid Purification of graphite and fluoride under normal pressure, according to a certain proportion of mixing, heating, cooling, washing, remove other salts, and then a certain concentration of boiling soda wash, remove residual fluorine, high-purity graphite can be obtained. The high temperature calcination method is to place graphite in a special electric furnace, and when the isolated air is heated to 2500 ° C., the ash impurities in the graphite are evaporated, and the graphite is recrystallized to obtain high purity graphite. natural flake graphite was purified by hydrochloric acid and hydrofluoric acid, and then washed, separated, dried and crushed to obtain graphite powder. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-threatening and health concentrations | 1,250 mg/m3 |
Last Update：2024-04-09 19:05:15
Supplier List
Spot supply
Product Name: Graphite Request for quotationCAS: 7782-42-5
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Graphite Request for quotationCAS: 7782-42-5
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: Graphite Request for quotation
CAS: 7782-42-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 7782-42-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Multiple Specifications
Product Name: Graphite powder Visit Supplier Webpage Request for quotationCAS: 7782-42-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
Spot supply
Product Name: Graphite Request for quotationCAS: 7782-42-5
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Graphite Request for quotationCAS: 7782-42-5
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: Graphite Request for quotation
CAS: 7782-42-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 7782-42-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Multiple Specifications
Product Name: Graphite powder Visit Supplier Webpage Request for quotationCAS: 7782-42-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for C.I. 77265