|
Appearance
|
Brown Powder
|
|
Compose
|
Methyl Naphthalene Sulfonate
|
|
Ion type
|
Negative ion
|
|
Solubility
|
Easy dissolve in water
|
|
Item
|
Standard
|
Result
|
|
pH(1% aqueous solution)
|
7.0-9.0
|
7.37
|
|
Dispersion(%)
|
≥90
|
92
|
|
Sodium sulfate content(%)
|
≤8
|
7.10
|
|
Water content(%)
|
≤9
|
7.38
|
|
Content %(Ca+ Mg+)
|
≤0.4
|
0.15
|
|
Free formaldehyde content(mg/kg)
|
≤300
|
<300
|
|
Insoluble matter(%)
|
≤0.10
|
<0.10
|
|
≥130
|
140
|
|
|
Fineness(30μm Sieve)%
|
≤5
|
<5
|
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