|
|
 |
Formaldehyde:
GB/T9009-19
| Item |
Top grade |
First grade |
Qualified product |
Assay% |
37.0-37.4 |
36.7-37.4 |
36.5-37.4 |
Acidity (as formic acid)%¡Ü |
0.02 |
0.04 |
0.05 |
Methanol :
GB338-92
| Chroma |
10 |
Density g/cm3 |
0.791¡«0.793 |
Temperature range |
64.0-65.5 |
Potassium permanganate test |
min¡Ý30 |
Water dissolved test |
clear |
Moisture % |
¡Ü0.1 |
Acidity % |
¡Ü0.0015 |
Controlled item |
Moisture & Density |
|
|
|
 |
