Substance profile
Silicon carbide fibres (with diameter < 3 μm, length > 5 μm and aspect ratio ≥ 3:1)
Silicon carbide fibres (with diameter < 3 μm, length > 5 μm and aspect ratio ≥ 3:1) is exceedingly hard, green to bluish-black, iridescent, sharp crystals.
01 · Identification
What Silicon carbide fibres (with… is
Silicon carbide fibres (with diameter < 3 μm, length > 5 μm and aspect ratio ≥ 3:1) is exceedingly hard, green to bluish-black, iridescent, sharp crystals. Its molecular formula is CSi and its molecular weight is 40.096 g/mol. It melts at 2600 °C, is practically insoluble in water.
Under the GHS it carries the signal word Danger.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350i | May cause cancer by inhalation. |
03 · Physical and chemical properties
Silicon carbide fibres (with… properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | Sublimes | sublimes | NIOSH |
| Sublimes (NIOSH, 2024) | sublimes | CAMEO | |
| sublimes | sublimes | OSHA | |
| Melting point | 2600 °C (4712 °F) | HSDB | |
| 2830 °C (5126 °F) | DOE PAC | ||
| 2700 °C (4892 °F) | sublimes | NIOSH | |
| Density | 3.23 g/cm³ | HSDB | |
| Solubility | INSOL IN COLD WATER, HOT WATER, & ACID; SOL IN FUSED POTASSIUM HYDROXIDE | HSDB | |
| INSOL IN ALCOHOL; SOL IN MOLTEN IRON | HSDB | ||
| Insoluble | NIOSH | ||
| Vapor pressure | 0 mmHg | approx | NIOSH |
| Lower explosive limit (LEL) | Noncombustible Solid | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Silicon carbide fibres (with…
Incompatible materials
Sublimes with decomposition at 4892 degrees F.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
SILICON CARBIDE is non-combustible. Generally unreactive. Soluble in molten alkalis (NaOH, KOH) and in molten iron.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Silicon carbide fibres… in the storage compatibility matrix →