本品为天然阿魏酸
99%:
外观Appearance 白色或类白色结晶性粉末,无臭无味
纯度Purity ≥99.0%
熔点Melting point 170°C - 173°C
灼烧残渣Ignition residue,% ≤0.1
干燥失重Loss on drying ,% ≤0.50
重金属Heavy Metals,% ≤10ppm
砷盐Arsenic,% ≤2ppm
品级Grade matrix substance for MALDI-MS
纯度Purity ≥99.0% (HPLC)
熔点Melting point 171°C - 175°C
cation traces by ICP Atomic emission
Ba: ≤5 ppm
Ca: ≤10 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤20 ppm
K: ≤50 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Zn: ≤5 ppm
abs. absorption/337 nm ≥2000 (mol. absorption)
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