ITEM
|
SPECIFICATIONS
|
appearance
|
white crystal
|
Content
|
98.0%MIN.
|
Volatile matter
|
1.0%MAX.
|
iron(Fe)
|
0.002%MAX.
|
heavy metal (with Pb)
|
0.001%MAX.
|
dissolving test of methyl alcohol
|
nearly no colour and no mechanical impurity
|
Melting point℃
|
48-52
|
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