产品描述
草本药物一级标准品，均经色谱和NMR双重方法测定组分含量，水份含量（Karl Fishcer方法测定）和溶剂残留都经测定并严格控制，确保证书上各指标高度可靠。
Coumarin
primary reference standard
Description
Application Reference standard in the analysis of herbal medicinal products
General description Produced and qualified by HWI Analytik
Exact content by quantitative NMR can be found on the certificate
Properties
grade primary reference standard
vapor pressure 0.01 mmHg ( 47 °C)
CofA certificate is enclosed in each package
bp 298 °C(lit.)
mp 68-73 °C(lit.)
Safety
Symbol GHS06
Signal word Danger
Hazard statements H301
Precautionary statements P301 + P310
WGK Germany 3
RTECS GN4200000
