原文由 李三疯(lm2001-66) 发表:
杂质ppm级别已经蛮高了啊。。。
4.110040
Nitric acid 65.0%
for analysis, ACS
for determinations with dithizone
HNO3 M.=63.01
CAS No. 7697-37-2
UN 2301
Guarantee analysis
Assay ≥ 65.0 %
Heavy metals (as Pb) < 0.0002 %
Residue on ignition (SO4) ≤ 0.0005 %
Appearance of solution complying
Chloride (Cl) ≤ 0.00005 %
Sulphate (SO4) ≤ 0.00005 %
Phosphate (PO4) ≤ 0.00005 %
Suitability for determination with dithizone complying
Metals by ICP
Ag 0.01 Cr 0.02 Mo 0.02
Al 0.05 Cu 0.01 Na 0.5
As 0.01 Fe 0.1 Ni 0.02
Ba 0.01 Ge 0.05 Pb 0.01
Be 0.01 Hg 0.01 Sr 0.01
Bi 0.1 Li 0.01 Ti 0.1
Ca 0.1 K 0.05 TI 0.05
Cd 0.01 Mg 0.1 Zn 0.05
Co 0.01 Mn 0.01 Zr 0.1
上发了具体的指标,Hg是0.01ppm, Cr 是0.02ppm,应该不算高吧?
关键是产品质量稳定,这么多年来,从来没有过产品质量的投诉。