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Lead
Chrome Yellow
Lead chrome yellow,the molecular formula is
25PbCrO4·PbO.The color range is from lemon yellow to orange yellow.
It is usually classified 5 standard types as
Lemon chrome yellow:
2.5PbCrO4 PbSO4+xAl(OH)3+yAlPO4
Light chrome yellow:
3.2PbCrO4PbSO4+xAl(OH)3+yAlPO4
Neutral chrome yellow:
PbCrO4+xAl(OH)3
Dark chrome yellow:
PbCrO4+xAl(OH)3
Orange
Chrome yellow:
PbCrO4+xAl(OH)3
The pigments are gloss, bright color shade and excellent hiding
power, mainly used for producing coating, paints, inks, plastic, rubber, cultural&educational articles etc.
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Name of the Index |
Index |
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Lemon Chrome |
Light Chrome |
Neutral Chrome |
Dark Chrome |
Orange Chrome |
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Colour (compared with standard sample) |
Tiny Difference |
Tiny Difference |
Tiny Difference |
Tiny Difference |
Tiny Difference |
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Dilute Colour (Compared with standard Sample) |
Tiny Difference |
Tiny Difference |
Tiny Difference |
Tiny Difference |
Tiny Difference |
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Relative Tiniting Strength, (Compared with Standard, Sample) % |
95 |
95 |
95 |
95 |
95 |
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Matter Volatile at 105 % |
3.0 |
2.0 |
1.0 |
1.0 |
1.0 |
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Matter Soluble in water, % |
1.0 |
1.0 |
1.0 |
1.0 |
1.0 |
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Acidity or Alkalinity of the aqueous extract, |
20 |
20 |
20 |
20 |
20 |
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PH Value of aqueous extract |
4-8 |
4-8 |
4-8 |
4-8 |
4-8 |
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Oil Absorption Value, g/100g |
25 |
25 |
22 |
20 |
15 |
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Residue on Sieve, % (m/m) |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
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Ease of dispersion, um |
25 |
25 |
25 |
25 |
25 |
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Residue to light (Grade) |
4 |
4 |
4 |
4 |
5 |
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Total tead content as Pb, %(m/m) |
50.0 |
50.0 |
50.0 |
50.0 |
65.0 |
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Content of Chrome-acid lead, % |
50.0 |
60.0 |
90.0 |
85.0 |
55 |
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Kingstone Group All right reserved