Silicon carbide CAS#409-21-2

High Hardness and Abrasive Performance: Silicon carbide has been widely used as an abrasive since 1893, making it suitable for applications requiring effective abrasion and wear resistance.

Excellent Durability for Ceramic Materials: Sintered silicon carbide powder produces hard ceramic particles suitable for durable products such as automotive brake pads, clutches, and bulletproof vests.

Versatile Electronic Applications: Silicon carbide is used in the manufacture of electronic components, including light-emitting diodes (LEDs) and early radio detectors.

Suitable for High-Temperature and High-Voltage Semiconductors: Silicon carbide is widely used in semiconductor manufacturing, particularly for devices designed to operate under high-temperature and high-voltage conditions.

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Product Description

Product Description-Silicon carbide CAS#409-21-2

Pale yellow, transparent crystals belonging to the cubic crystal system. They are soluble in molten potassium hydroxide but insoluble in cold water, hot water, and acids. The crystal structure is highly ordered, exhibiting excellent chemical inertness and strong resistance to oxidation and thermal fluctuations. They possess a low coefficient of thermal expansion and a relatively high heat transfer coefficient.

Product Applications-Silicon carbide CAS#409-21-2

Boasting high thermal stability, strength and thermal conductivity, it is widely used for nuclear materials, chemical equipment, high-temperature processing, electric heating elements and resistors. It also makes abrasives, grinding tools, premium refractories and fine ceramics.

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Product Data

Chemical Properties-Silicon carbide CAS#409-21-2

Melting point	2700 °C (lit.)
density	3.22 g/mL at 25 °C (lit.)
bulk density	0.069g/cm3
refractive index	2.6500
solubility	Soluble in molten sodium hydroxide, potassium hydroxide and in molten iron.
form	nanopowder
color	Green
Specific Gravity	3.22
Resistivity	107–200 (ρ/μΩ.cm)
Water Solubility	Soluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water.
Thermal Conductivity	0.69 W/(m·K)
Specific Heat Capacity	Cp(crystal): 0.67 J/(g·K), at 25℃
Crystal Structure	Cubic, Sphalerite Structure - Space Group F(-4)3m
Hydrolytic Sensitivity	1: no significant reaction with aqueous systems
Merck	14,8492
Exposure limits	ACGIH:TLV-TWA 0.1 f/cc,respirable fibers*OSHA:PEL-TWA 15 mg/m3 (total dust),5 mg/m3 (respirable fraction)NIOSH:REL-TWA 10 mg/m3 (total dust),5 mg/m3 (respirable fraction)
Stability:	Stability
Cosmetics Ingredients Functions	ABRASIVE
InChI	1S/CSi/c1-2
InChIKey	HBMJWWWQQXIZIP-UHFFFAOYSA-N
SMILES	[C-]#[Si+]
Modulus of Elasticity	459 - 476 GPa
Knoop Microhardness	3000, at 25°C
Poissons Ratio	0.14, sintered
Shear Modulus	180 GPa, Calculated
IARC	2A (Vol. 111) 2017
NIST Chemistry Reference	Silicon monocarbide(409-21-2)
EPA Substance Registry System	Silicon carbide (409-21-2)

Safety Information-Silicon carbide CAS#409-21-2

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
OEB	B
OEL	TWA: 10 mg/m3 (total)
WGK Germany	3
RTECS	VW0450000
TSCA	TSCA listed
HS Code	28492000
Storage Class	11 - Combustible Solids
Hazardous Substances Data	409-21-2(Hazardous Substances Data)

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