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SILICON CARBIDE

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The Chemical Identifier fields include common identification numbers, the NFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 409-21-2
none
DOT Hazard Label USCG CHRIS Code
data unavailable none
NIOSH Pocket Guide International Chem Safety Card
Silicon carbideexternal_link
NFPA 704
data unavailable
General Description
Yellow to green to bluish-black, iridescent crystals. Sublimes with decomposition at 2700°C. Density 3.21 g cm-3. Insoluble in water. Soluble in molten alkalis (NaOH, KOH) and molten iron.

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
none
Air & Water Reactions
No rapid reaction with air. No rapid reaction with water.
Fire Hazard
No information available.
Health Hazard
Excerpt from NIOSH Pocket Guide for Silicon carbideexternal link:

Exposure Routes: Inhalation, ingestion, skin and/or eye contact

Symptoms: Irritation eyes, skin, upper respiratory system; cough

Target Organs: Eyes, skin, respiratory system (NIOSH, 2024)
Reactivity Profile
SILICON CARBIDE is non-combustible. Generally unreactive. Soluble in molten alkalis (NaOH, KOH) and in molten iron.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
Excerpt from NIOSH Pocket Guide for Silicon carbideexternal link:

Skin: No recommendation is made specifying the need for personal protective equipment for the body.

Eyes: No recommendation is made specifying the need for eye protection.

Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).

Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.

Change: No recommendation is made specifying the need for the worker to change clothing after the workshift. (NIOSH, 2024)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Excerpt from NIOSH Pocket Guide for Silicon carbideexternal link:

Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Breathing: FRESH AIR - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary.

Swallow: MEDICAL ATTENTION IMMEDIATELY - If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2024)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.

Note: For Vapor Density and Specific Gravity, comparing the value to 1.0 can tell you if the chemical will likely sink/rise in air or sink/float in fresh water (respectively). Short phrases have been added to those values below as an aid. However, make sure to also consider the circumstances of a release. The Vapor Density comparisons are only valid when the gas escaping is at the same temperature as the surrounding air itself. If the chemical is escaping from a container where it was pressurized or refrigerated, it may first escape and behave as a heavy gas and sink in the air (even if it has a Vapor Density value less than 1). Also, the Specific Gravity comparisons are for fresh water (density 1.0 g/mL). If your spill is in salt water (density about 1.027 g/mL), you need to adjust the point of comparison. There are some chemicals that will sink in fresh water and float in salt water.
Chemical Formula:
  • SiC
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 4892°F (Sublimes) (NIOSH, 2024)
Vapor Pressure: 0 mmHg (approx) (NIOSH, 2024)
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 3.23 (NIOSH, 2024) - Denser than water; will sink
Boiling Point: Sublimes (NIOSH, 2024)
Molecular Weight: 40.1 (NIOSH, 2024)
Water Solubility: Insoluble (NIOSH, 2024)
Ionization Energy/Potential: 9.30 eV (NIOSH, 2024)
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Silicon carbide (409-21-2) 45 mg/m3 500 mg/m3 3000 mg/m3
(DOE, 2024)

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • A 20
  • A 20 (CARBIDE)
  • AE 60
  • AE 60 (CARBIDE)
  • ANNANOX CK
  • B-HP
  • B-HP (CARBIDE)
  • BETARUNDUM
  • BETARUNDUM ST-S
  • BETARUNDUM UF
  • BETARUNDUM ULTRAFINE
  • BF 12
  • BLOK
  • BSC 059
  • C 1000F
  • C 700D DARK
  • C 800D DARK
  • 37C150
  • CARBOFRAX M
  • CARBOGRAN F 180
  • CARBOGRAN F 36
  • CARBOGRAN F 80
  • CARBOGRAN UF 15
  • CARBOGRAN UF 45
  • CARBOLON
  • CARBON SILICIDE
  • CARBORUNDUM
  • CARBORUNDUM®
  • CGW 3
  • CP 240
  • CP 400
  • CRYSTAR
  • CRYSTOLON 37
  • CRYSTOLON 39
  • CRYSTOLON B
  • CRYSTOLON F 240
  • CRYSTOLON F 320
  • DENSIC 120
  • DENSIC 180
  • DENSIC 220
  • DENSIC 60
  • DENSIC 80
  • DENSIC C 150
  • DENSIC C 500
  • DENSIC C 600
  • DENSIC GC
  • DENSIC RC 31
  • DIASIC
  • DU-A 1
  • DU-A 2
  • DU-A 3
  • DU-A 3C
  • DU-A 4
  • E 299-400
  • E 299-600
  • E 599P1500
  • EKASIC D
  • EKASIC TRIBO 2000
  • EKASIC TRIBO 2000-1
  • F 1000
  • F 1000 (CARBIDE)
  • F 120
  • F 120 (CARBIDE)
  • F 20
  • F 20 (ABRASIVE)
  • F 500
  • F 500 (CARBIDE)
  • FCP 13NLC
  • FCP 15
  • 100FT
  • G-UF
  • GC 1000
  • GC 10000
  • GC 1000F
  • GC 15
  • GC 15 (CARBIDE)
  • GC 180
  • GC 2000
  • GC 2000 (CARBIDE)
  • GC 240
  • GC 3000
  • GC 400
  • GC 4000
  • GC 4000F
  • GC 600
  • GC 6000
  • GC 800
  • GC 8000
  • GC 800S
  • GMF 15H2
  • GMF 6S
  • GP 600
  • GP 600 (ABRASIVE)
  • GP-SFP 1.7
  • GREEN DENSIC
  • GREEN DENSIC GC 120
  • GREEN DENSIC GC 180
  • GREEN DENSIC GC 240
  • GREEN DENSIC GC 280
  • GREEN DENSIC GC 800
  • HALSIC RX
  • HEXOLOY SA
  • HEXOLOY SX
  • HF 30
  • HITACERAM SC 101
  • HSC (CARBIDE)
  • IBIDEN
  • KZ 3M
  • KZ 5M
  • KZ 7M
  • LONZA UF 05
  • MSC 20
  • MSM 33
  • NC 203
  • NC 203 (CERAMIC)
  • NFO 860
  • NG 220
  • NG 220 (CARBIDE)
  • NG 80
  • NORTON 1000
  • OY 15
  • OY 3
  • OY 7
  • P 1200
  • P 1200 (CERAMIC)
  • P 240
  • P 240 (CARBIDE)
  • P 320
  • P 320 (CERAMIC)
  • P 400
  • P 400 (CERAMIC)
  • P 600
  • P 600 (CERAMIC)
  • POLISHER C 80
  • RA 1200 BLACK GRIT
  • RA 1200 GREEN GRIT
  • SC 201
  • SC 9
  • SC 9 (CARBIDE)
  • SCH 07
  • SCP 00
  • SCW 1
  • SCW 1-50M
  • SCW 15
  • SD-GP 6000
  • SD-GP 8000
  • SHINANO RUNDUM
  • SIC 11
  • SIKA III
  • SILICON CARBIDE
  • SILICON CARBIDE (SI0.5C0.5)
  • SILICON MONOCARBIDE
  • SILUNDUM
  • SIXCY
  • SSC-W 49
  • SUPERSIC
  • T 1
  • T 1 (CARBIDE)
  • TOKAWHISKER
  • TOKAWHISKER S 400
  • UA 1
  • UA 2
  • UA 3
  • UA 4
  • UA 4 (CARBIDE)
  • UF 05
  • UF 05 (CARBIDE)
  • UF 10
  • UF 10 (CARBIDE)
  • UF 15
  • UFB 10
  • ULTRAFINE
  • ULTRAFINE (CARBIDE)
  • 0Y15

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