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900448

Sigma-Aldrich

Graphene dispersion

greener alternative

≥0.2 mg/mLin DMF, sheet resistance 2 kΩ/sq, avg. no. of layers, 1 ‑ 3

Synonym(s):

Conductive ink, Electrochemically exfoliated graphene ink, Graphene ink

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About This Item

UNSPSC Code:
12141908
NACRES:
NA.23

product name

Graphene dispersion, ≥0.2 mg/mL in DMF, sheet resistance 2 kΩ/sq, avg. no. of layers, 1 ‑ 3

description

Dispersion in DMF

Quality Level

100

form

dispersion

feature

avg. no. of layers 1 ‑ 3

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

concentration

≥0.2 mg/mL (electrochemically exfoliated graphene)
≥0.2 mg/mL in DMF

greener alternative category

Enabling,

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General description

  • Graphene preparation method: electrochemical exfoliation.
  • Graphene thickness by AFM: ∼80% 1-3 layers.
  • Sheet size by AFM: 5-10 μm.
  • Oxygen content: 5.5 at.% (C/O-ratio: 17.2).
  • Raman I_D/I_G ratio: 0.25.
  • Sheet resistance: 2 kΩ/sq.
  • Typical properties of films produced thereof (after dilution to 0.1 mg/mL and dry transfer from PTFE-filter):
6 nm film: 91% transmittance, sheet resistance of 24.2 kΩ/sq (as made), 7.9 kΩ/sq (after 30 min, 200 °C), <1 kΩ/sq (conc. HNO3-treatment).
16 nm film: 73% transmittance, sheet resistance of 7.6 kΩ/sq (as made), 1.8 kΩ/sq (after 30 min, 200 °C), <500 Ω/sq (conc. HNO3-treatment).
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to Enabling category of greener alternatives thus aligns with "Design for energy efficency". Graphene inks are highly conductive, low cost and super flexible. Click here for more information.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 1B

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

131.0 °F

Flash Point(C)

55 °C

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 2 petroleums
Hazardous rank III
Water soluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

900448-BULK:
900448-50ML:4548174012345
900448-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCN2083
MKCG4937

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Khaled Parvez et al.
Journal of the American Chemical Society, 136(16), 6083-6091 (2014-04-02)
Mass production of high-quality graphene sheets is essential for their practical application in electronics, optoelectronics, composite materials, and energy-storage devices. Here we report a prompt electrochemical exfoliation of graphene sheets into aqueous solutions of different inorganic salts ((NH4)2SO4, Na2SO4, K2SO4

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