Expandable Graphite
ALDRICH/808121 - flakes
Synonym: Graphite intercalation compound; Intumescent flake graphite
Linear Formula: C24(HSO4)(H2SO4)2
Product Type: Chemical
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| description | Expansion Ratio (X:1): 270 to 325 |
| form | flakes |
| particle size | +50 mesh (>300μ, ≥75% minimum) |
| pH | 5-10 |
| Quality Level | 100  |
| solubility | water: insoluble |
| Application: | • Graphene precursor. • Inorganic source of carbon. • Filler. • Thermal additive. • Fire retardant additive. • Casting powders. • Plastic additive. • Rubber additive. • EMF absorber. • Milling and sieving. • Bulk loading, unloading. • Base material for gaskets and seals. • Coatings. |
| General description: | Expandable graphite is a synthesized intercalation compound of graphite that expands or exfoliates when heated. This material is manufactured by treating flake graphite with various intercalation reagents that migrate between the graphene layers in a graphite crystal and remain as stable species. If exposed to a rapid increase in temperature, these intercalation compounds decompose into gaseous products, which results in high inter-graphene layer pressure. This pressure develops enough force to push apart graphite basal planes in the “c” axis direction. The result is an increase in the volume of the graphite of up to 300 times, a lowering of bulk density, and approximately a 10-fold increase in surface area. |
| Packaging: | 2.5 kg in poly drum |
| Symbol |  GHS08 |
| Signal word | Danger |
| Hazard statements | H350 - H373 |
| Precautionary statements | P201 - P202 - P260 - P280 - P308 + P313 - P405 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 12352200 |