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立德粉技术标准（GB/T1707-1995） |
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总锌量（以硫化锌计）
%（m/m）≥
28
28
30
氧化锌%（m/m）≤
0.6
0.8
0.3
0.3
0.3
0.3
105℃挥发物%（m/m）≤
0.3
0.3
0.3
0.3
0.3
0.3
水溶物%（m/m）≤
0.4
0.5
0.4
0.5
0.3
0.4
筛余物（63μm）%≤
0.1
0.1
0.1
0.1
0.1
0.1
颜色（与标准样比）
优于
近似
优于
近似
优于
近似
水萃取碱度
中性
吸油量g/100≤
14
11
10
消色力（与标准样比）≥
105
100
105
100
105
100
遮盖力（对比率）
不低于标准样的5%
Lithopone technical standard（GB/T1707-1995） |
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Ltems |
B301 |
B302 |
B311 |
|||
High Grade |
lst Grade |
High Grade |
lst Grade |
High Grade |
lst Grade |
|
Total amount of zinc(calculated as zinc sulpide and bar ium sulfate)%≥ |
99 |
99 |
99 |
|||
Total amount of zinc(calculated of zinc sulfide).%≥ |
28 |
28 |
30 |
|||
Zinc oxide,%≤ |
0.6 |
0.8 |
0.3 |
0.3 |
0.3 |
0.3 |
Volatile mater at 105℃,%≤ |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
0.3 |
Matter soluble in watter,%≤ |
0.4 |
0.5 |
0.4 |
0.5 |
0.3 |
0.4 |
Residue on sieve(63μm),%≤ |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
Color(than to standard sample) |
High |
Similar |
High |
Similar |
High |
Similar |
Alkalinity of the a queous extract |
Neutrale |
|||||
Oil absorption value, (g/100 pigment)≤ |
14 |
11 |
10 |
|||
Achromic power(than to standard sample)%≥ |
105 |
100 |
105 |
100 |
105 |
100 |
Hiding power(comparative ratio) |
Not lower than 5%of standard sample |
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