MONOCRYSTALLINE POWDER CAS 7782-40-3

Introduction：Basic information about MONOCRYSTALLINE POWDER CAS 7782-40-3, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

MONOCRYSTALLINE POWDER Basic information

• Product Name: MONOCRYSTALLINE POWDER
• Synonyms: MONOCRYSTALLINE POWDER;DIAMOND NATURAL MONOCRYSTALLINE POWD&;DIAMOND POWDER;DIAMOND, SYNTHETIC, POLYCRYSTALLINE, POW DER, CA. 1 MICRON, 99.9%;DIAMOND, NANOPOWDER, 95+%;DIAMOND, NATURAL, MONOCRYSTALLINE, POWDE R, CA. 1 MICRON, 99.9%;DIAMOND, NANOPOWDER, 97+% METALS BASIS;DIAMOND, SYNTHETIC, MONOCRYSTALLINE, POW DER, CA. 1 MICRON, 99.9%
• CAS: 7782-40-3
• MF: C
• MW: 12.0107
• EINECS: 231-953-2
• Product Categories: Inorganics;06: C;Carbon-Based MaterialsMaterials Science;Nanomaterials;Nanoparticles: Metals and Metal AlloysNanomaterials;Nanopowders and Nanoparticle Dispersions;Carbon-Based MaterialsMicro/Nanoelectronics;Electronic Chemicals;Materials Science;Metal and Ceramic Science;Pure Elements
• Mol File: 7782-40-3.mol

MONOCRYSTALLINE POWDER Chemical Properties

• Melting point: 4440°C
• Boiling point: 4827℃ [COT88]
• bulk density: 0.2-0.7g/mL
• density: 3.5 g/mL at 25 °C (lit.)
• refractive index: nD20 2.4173
• solubility: insoluble in H2O
• form: synthetic polycrystalline powder
• color: Clear, Impurities (i.e. Nitrogen) and irradiation can change color to yellow, green, blue, pink, or brown.
• Crystal Structure: Cubic, Diamond - Space Group Fd3m
• Merck: 14,2987
• Stability: Stable.
• Cosmetics Ingredients Functions: ABRASIVE SKIN PROTECTING
• Hardness, Knoop: 8000
• Hardness, Mohs: 10
• Knoop Microhardness: 58 - 88, GPa; (110),(111) faces 79, GPa 56 - 102, GPa; (001) face
• Vickers Microhardness: 98, in GPa; (111) face 88 - 147, in GPa; (001) face
• Modulus of Elasticity: 700 - 1200 GPa
• Poissons Ratio: 0.10 - 0.29
• EPA Substance Registry System: Diamond (7782-40-3)

Safety Information

• WGK Germany: -
• RTECS: HL4158550
• TSCA: TSCA listed
• HS Code: 7105.10.0011
• Storage Class: 11 - Combustible Solids

MONOCRYSTALLINE POWDER Usage And Synthesis

Chemical Properties

very hard crystals or light green powder

Chemical Properties

Diamond is among the strongest Raman scatterers, and Raman spectroscopy is an important diagnostic tool for determining diamond film quality. Diamond has an intense Raman band at 1332 cm^-1, the presence of which verifies a material contains diamond. The more regular the crystal lattice, the narrower the width of this band. Graphite has two first-order phonon Raman bands, a strong band at 1580 cm?1 and a weaker one at 1357 cm^-1.

Physical properties

Exists in two major varieties: those bearing nitrogen as an impurity (Type I) and those without nitrogen (Type II). These two subgroups are further subdivided into Types Ia, Ib, IIa, and IIb. Type Ia diamonds are the most common type of naturally occurring diamond; they exhibit 0.1 to 0.2 wt.% nitrogen present in small aggregates, including platelets. By contrast, nitrogen in Type Ib diamonds is dispersed substitutionally. Of the two Type II diamond types, Type IIb is a semiconductor due to minute amounts of boron impurities and exhibits a blue color, whereas Type IIa diamonds are comparatively pure. Electric insulator (E = 7 eV.). Burns in oxygen.

Uses

Monocrystalline diamond particles internalized in human endothelial cells have potential applications in drug delivery.

Uses

Diamond powder is generally used as an abrasive to grind and polish hard surfaces.

Uses

Jewelry. Polishing, grinding, cutting glass, bearings for delicate instruments; manufacture of dies for tungsten wire and similar hard wires; making styli for recorder heads, long-lasting phonograph needles. In semiconductor research.

Definition

ChEBI: An allotropic form of the element carbon with cubic structure which is thermodynamically stable at pressures above 6 GPa at room temperature and metastable at atmospheric pressure. At low pressures diamond converts rapidly to graphite at temperatures above1900 K in an inert atmosphere. The chemical bonding between the carbon atoms is covalent with sp3 hybridization.

General Description

Diamond nanopowder (DNPs) may be produced by multicathode direct current plasma chemical vapor deposition and high pressure high temperature (HPHT).
Potential uses of nano-diamond are in biosensor applications. Surface modification of nano-diamond may enhance its linking mechanism with specific biomolecules. DNPs can be subjected to functionalization post Fenton treatment. These functionalized DNPs may be used as gene delivery systems.

Synthesis

Currently the main methods for synthesizing nanodiamond are: high temperature and high pressure method, solvent-thermal method of gas phase deposition, irradiation of energy-containing particles and explosion bombing method.

Of these, the blast method is the most commonly used method, compared with other synthesis methods, the personality is obviously more distinctive, more adapted to modern industrial production, usually prepared by explosives as a precursor (using TNT and RDX explosives as raw materials), that is, in the high temperature and high pressure conditions at the moment of the blast, the use of negative oxygen balance of explosives in the blast is not oxidized carbon atoms, after aggregation, crystallization and a series of physicochemical process, the formation of nanoscale carbon particle group, which includes diamond phase, graphite phase and amorphous carbon. By removing the non-diamond carbon phase with an oxidizing agent, nanodiamond is obtained.

Structure and conformation

Diamond crystallographic structure consists to a face centered cubic crystal lattice where the carbon atoms occupy the eight corners, the centers of the six faces and half of the tetrahedral crystallographic sites (Z = 8). The most common crystal habits for euhedral crystals found in nature are the octahedron {111}, the cube {100}, and the dodecahedron {110} sometimes rounded due to etching. Diamond normally cleaves on the (111) plane but cleavage has been observed on the (110) plane and to a lesser extent some other crystallographic planes.