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NIST640G

Line Position And Line Shape Standard for Powder Diffraction

(Silicon powder) NIST® SRM® 640G

Synonym(s):

Silicone powder

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About This Item

UNSPSC Code:
41116107
NACRES:
NA.24

form

powder

packaging

pkg of 7.5 g

manufacturer/tradename

NIST®

technique(s)

diffraction/scattering: suitable

General description

The Standard Reference Material (SRM) was prepared from ultra-high purity, intrinsic silicon boules that were crushed and jet milled to a median particle size of 4.1μm. The resulting powder was then annealed under gettered argon at 1000 °C for two hours and bottled under argon.

SRM 640F_Cert

SRM 640F_SDS

Application

This SRM is intended for use as a standard for calibration of diffraction line positions and line shapes, determined through powder diffractometry.

Features and Benefits

  • A unit of SRM 640f consists of approximately 7.5 g of silicon powder bottled under argon.
  • Analysis of X-ray powder diffraction data indicated that the SRM material is homogeneous with respect to diffraction properties.
  • SRM 640f was bottled under argon to protect against humidity.
  • The certification data was analyzed using the FPA method with Pawley refinements as implemented in TOPAS.
  • Expiration details and storage instructions are available in the NIST certificate.

Other Notes

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology
SRM is a registered trademark of National Institute of Standards and Technology

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

NIST640G:

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Certificates of Analysis (COA)

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