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255475

Sigma-Aldrich

Boron nitride

powder, ~1 μm, 98%

Synonym(s):

Boron mononitride, Hexagonal boron nitride, White graphite

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About This Item

Linear Formula:
BN
CAS Number:
Molecular Weight:
24.82
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

Assay

98%

form

powder

particle size

~1 μm

density

2.29 g/mL at 25 °C (lit.)

SMILES string

B#N

InChI

1S/BN/c1-2

InChI key

PZNSFCLAULLKQX-UHFFFAOYSA-N

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General description

Hexagonal boron nitride (hBN) has a layered structure similar to graphite and can be exfoliated as singlelayered BN sheets. hBN has applications in catalysts, optoelectronics and semiconductor devices. Boron nitride posseses high thermal conductivity of approximately 400W/mK at 300K.[1]

Application

Hexagonal boron nitride powder has been used:
  • In the fabrication and luminescence study of monolayered boron nitride quantum dots.[2]
  • Rare earth boron complexes.[3]
  • Boron nitride filled polybenzoxazine system as a thermally conducting molding components for electronic packaging applications.[4]
  • Boron containing ceramic products.[5]
  • As a starting material to form BN nanotubes.[6]
  • To load silicone rubber and its consecutive effect on its thermal, mechanical and morphological properties was studied.[7]

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Boron carbide and nitride as reactants for in situ synthesis of boride-containing ceramic composites
Zhanga GJ, et al.
J. Eur. Ceram. Soc., 24, 171-178 (2004)
Mark P Levendorf et al.
Nature, 488(7413), 627-632 (2012-08-31)
Precise spatial control over the electrical properties of thin films is the key capability enabling the production of modern integrated circuitry. Although recent advances in chemical vapour deposition methods have enabled the large-scale production of both intrinsic and doped graphene
Properties of thermally conductive micro and nano size boron nitride reinforced silicon rubber composites
Kemaloglu S, et al.
Thermochimica Acta, 499, 40-47 (2010)
A very high thermal conductivity obtained by boron nitride filled polybenzoxazine
Ishida H and Rimdusit S
Thermochimica Acta, 320, 177-186 (1998)
Liangxu Lin et al.
Small (Weinheim an der Bergstrasse, Germany), 10(1), 60-65 (2013-07-11)
Monolayered boron nitride (BN) quantum dots (QDs; lateral size ≈10 nm) are fabricated using a novel method. Unlike monolayered BN sheets, these BN QDs exhibit blue-green luminescence due to defects formed during preparation. This optical behavior adds significant functionality to

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Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. what does "1um" mean? thikness? or the powder size?

    1 answer
    1. 1 micron is the powder size, not specific to thickness.

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