Line Position And Line Shape Standard for Powder Diffraction
SIAL/NIST640F - (Silicon powder), NIST® SRM® 640F
Synonym: Silicon powder; Silicone powder
Product Type: Chemical
| form | powder |
| manufacturer/tradename | NIST® |
| packaging | pkg of 7.5 g |
| 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. |
| 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 4.1 μm. 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 |
| Legal Information: | NIST is a registered trademark of National Institute of Standards and Technology |
| Legal Information: | SRM is a registered trademark of National Institute of Standards and Technology |
| Symbol |  GHS02 |
| Signal word | Warning |
| Hazard statements | H228 |
| Precautionary statements | P210 - P240 - P241 - P280 - P370 + P378 |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 41116107 |