1.Molecular Formulas as following:
Lemon Chromate: 2.5PbCrO4 PbSO4+xAl(OH)3+yAlPO4
Neutral Chromate: PbCrO4+xAl(OH)3
2.Characters: Lead Chromate is a kind of bright-color yellow pigment with advantages of strong overspreading ability strong tinting strength, resistance to solvent and heat, grinding dispersing easily. Meeting Hydrogen Sulphide in changes into black.
3.Usage:Lead Chromate Pigment is widely used in the industries of painting, printing ink, rubber, plastic and stationery etc.
Package: P.P woven bags of 25kg net eac
|
Items: |
Lemon Chromate |
Neutral Chromate |
|
Colour (compared with standard sample) |
Minimum Difference |
Minimum Difference |
|
Dilute Colour |
Minimum Difference |
Minimum Difference |
|
Relative Tiniting Strength, |
95--100 |
95--100 |
|
Matter Volatile at 105 % |
3.0 |
1.0 |
|
Matter Soluble in water, % |
1.0 |
1.0 |
|
Acidity or Alkalinity of the aqueous extract, |
20 |
20 |
|
PH Value of aqueous extract |
4-8 |
4-8 |
|
Oil Absorption Value, g/100g |
25 |
22 |
|
)Residue on Sieve, % (m/m) |
0.3 |
0.3 |
|
Ease of dispersion, um |
20 |
20 |
|
Residue to light (Grade) |
4 |
5 |
|
Total tead content as Pb, %(m/m) |
55.0 |
55.0 |
|
Content of Chrome-acid lead, % |
50.0 |
90.0 |