808121
Expandable Graphite
flakes
Synonym(s):
Graphite intercalation compound, Intumescent flake graphite
Sign Into View Organizational & Contract Pricing
All Photos(1)
About This Item
Recommended Products
description
Expansion Ratio (X:1): 270 to 325
Quality Level
form
flakes
particle size
+50 mesh (>300μ, ≥75% minimum)
pH
5-10
solubility
water: insoluble
Related Categories
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.
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.
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.
signalword
Warning
hcodes
pcodes
Hazard Classifications
STOT RE 2 Inhalation
target_organs
Lungs
Storage Class
13 - Non Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Certificates of Analysis (COA)
Don't see the Right Version?
If you require a particular version, you can look up a specific certificate by the Lot or Batch number.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
Electrochemical reactivation of expanded graphite electrodes covered by oligomeric products of phenol electrooxidation.
Electrochimica Acta, 79, 202-209 (2012)
Chemical communications (Cambridge, England), 51(15), 3162-3165 (2015-01-22)
Graphite sulphate is used as a precursor to graphene for the first time. The positively charged graphene layers react with water to yield a processable graphene derivative. The unprecedented low density of defects is determined to be 0.06% on average
ACS nano, 6(9), 7842-7849 (2012-08-14)
Graphite intercalation compounds (GICs) can be considered stacks of individual doped graphene layers. Here we demonstrate a reversible formation of sulfuric acid-based GICs using ammonium persulfate as the chemical oxidizing agent. No covalent chemical oxidation leading to the formation of
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service