project | Indicators | ||
pharmacy grade I | pharmacy grade | Ordinary grade | |
Melting point, ºC | 47.5~49.0 | 47.0~49.0 | |
Purity,% ≥ | 99.80 | 99.80 | 99.00 |
Low boiling matter,%≤ | 0. 10 | 0. 10 | - |
High boiling 1,%≤ | 0.02 | 0.03 | - |
High boiling 2 ,%≤ | 0 02 | 0 05 | - |
High boiling 3 ,%≤ | 0 15 | 0 20 | - |
Benzene % ≤ | 0.03 | 0.04 | - |
APHA≤ | 40 | 50 | 70 |