Silicon carbide CAS#409-21-2

High Hardness & Wear Resistance:Extremely hard material with excellent abrasion resistance.


Corrosion & Slag Resistance:Performs well against molten slag and harsh environments.


Thermal Shock Resistance:Withstands rapid temperature changes without cracking.


High Conductivity & Multiple Structures:Offers good electrical conductivity and various polytypes for versatile applications.


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Product Description

Products Description of Silicon carbide CAS#409-21-2

Silicon carbide, a hard covalent material, is made by carbothermal reduction of silica at >2200 °C in electric furnaces. It features outstanding abrasion, corrosion and thermal shock resistance, with moderate electrical conductivity and oxidation susceptibility. It exists in hundreds of polytypes, mainly cubic β-SiC and hexagonal/rhombohedral α-SiC.


Product Application of Silicon carbide CAS#409-21-2

Silicon carbide, a rare fully synthetic refractory mineral, has four main bonding systems: oxide, Si₂ON₂, Si₃N₄ and self-bonded. The first three are permeable and prone to bond-phase corrosion, while self-bonded SiC is impermeable with only surface corrosion. Produced by reaction bonding or sintering, self-bonded variants have similar chemical resistance but distinct physical properties.

Product Information

Parameters


Melting point2700 °C (lit.)
bulk density0.069g/cm3
density3.22 g/mL at 25 °C (lit.)
refractive index2.65
solubilitySoluble in molten sodium hydroxide, potassium hydroxide and in molten iron.
formnanopowder
colorGreen
Specific Gravity3.22
Resistivity107–200 (ρ/μΩ.cm)
Water SolubilitySoluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water.
Hydrolytic Sensitivity1: no significant reaction with aqueous systems
Crystal StructureCubic, Sphalerite Structure - Space Group F(-4)3m
Merck148,492
Exposure limitsACGIH: TWA 10 mg/m3; TWA 3 mg/m3; TWA 0.1 fiber/cm3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: TWA 10 mg/m3; TWA 5 mg/m3
Stability:Stability
Cosmetics Ingredients FunctionsABRASIVE
InChIKeyHBMJWWWQQXIZIP-UHFFFAOYSA-N
Knoop Microhardness3000, at 25°C
Shear Modulus180 GPa, Calculated
Modulus of Elasticity459 - 476 GPa
Poissons Ratio0.14, sintered
NIST Chemistry ReferenceSilicon monocarbide(409-21-2)
IARC2A (Vol. 111) 2017
EPA Substance Registry SystemSilicon carbide (409-21-2)


Safety Information


Hazard CodesXi
Risk Statements36/37/38
Safety Statements26-36
OEBB
OELTWA: 10 mg/m3 (total)
WGK Germany3
RTECSVW0450000
TSCAYes
HS Code28492000
Hazardous Substances Data409-21-2(Hazardous Substances Data)


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FAQ

Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


Q2: How is the security of my transaction guaranteed when working with Huafeng Chemical?
A: We strictly adhere to international trade rules (Incoterms® 2020) and accept various payment methods, such as Letters of Credit (L/C) and Telegraphic Transfers (T/T). For new clients, we support small-batch trial orders and can clearly define arbitration clauses and applicable laws within the contract. Additionally, we maintain a robust risk management system to help you mitigate common trade risks, such as exchange rate fluctuations, shipping delays, and document discrepancies.


Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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