thiourea
|
Items |
Standard
|
|
Appearance
|
white crystal powder
|
|
Purity :(%)
|
≥99.0
|
|
Loss after heated: (%)
|
≤0.40
|
|
Ash content: (%)
|
≤0.1
|
|
Isoluble in water:(%)
|
≤0.02
|
|
CNS-% :(%)
|
≤0.02
|
|
Melting point(℃)
|
171
|