Uses:For the preparation of formate, formic acid ester, formamide and so on, or also used in medicine, printing and dyeing, dye, leather industry
Quality assay:
Quality assay:
|
Item |
Index | ||
|
Top grade |
First grade |
Qualified product | |
|
Chroma（Pt-Co）≤ |
10 |
20 |
|
|
Assay%≥ |
90.0 |
85.0 |
85.0 |
|
Dilution test（Acid+water=1+3）%≤ |
no cloudy |
Qualified |
|
|
Chloride(as C1)%≤ |
0.003 |
0.005 |
0.020 |
|
Sulfate (as S04)%≤ |
0.001 |
0.002 |
0.050 |
|
Iron (as Fe)%≤ |
0.0001 |
0.0005 |
0.0010 |
|
Residue on evaporation %≤ |
0.006 |
0.020 |
0.080 |