China Hunan Star & Moon Pigment Liability Co.,Ltd

Lead Chromate Series

Copper chrome black

CRYOLITE

Lead Chromate Series

Molecular Formulas as following:
Lemon Chromate: 2.5PbCrO₄PbSO₄+xAl(OH)₃+yAlPO₄
Light Chromate: 3.2PbCrO₄PbSO₄+xAl(OH)₃+yAlPO₄
Neutral Chromate: PbCrO₄+xAl(OH)₃
Dark Chromate: PbCrO₄+xAl(OH)₃
Orange Chromate: PbCrO₄+xAl(OH)₃
Characters: Lead Chromate is a kind of bright-coloured 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.

Uses: Lead Chromate Pigment is widely used in the industries of painting, printing ink , rubber, plastic and stationery etc.

Main Product Technical Datas( Lead Chromate GB/T3184-93)

Name of the Index	Index
	Lemon Chromate		Light Chromate		Neutral Chromate		Dark Chromate		Orange Chromate
	First Grade Products	Regular Products	First Grade Products	Regular Products	First Grade Products	Regular Products	First Grade Products	Regular Products	First Grade Products	Regular Products
Colour (compared with standard sample)	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference
Dilute Colour (Compared with standard Sample)	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference	Minimum Difference	Tiny Difference
Relative Tiniting Strength, (Compared with Standard, Sample) %	100	95	100	95	100	95	100	95	100	95
Matter Volatile at 105 %	3.0		2.0		1.0		1.0		1.0
Matter Soluble in water, %	1.0		1.0		1.0		1.0		1.0
Acidity or Alkalinity of the aqueous extract,	20		20		20		20		20
PH Value of aqueous extract	4-8		4-8		4-8		4-8		4-8
Oil Absorption Value, g/100g	25		25		22		20		15
)Residue on Sieve, % (m/m)	0.3	0.5	0.3	0.5	0.3	0.5	0.3	0.5	0.3	0.5
Ease of dispersion, um	20	25	20	25	20	25	20	25	20	25
Residue to light (Grade)	4	3	4	3	5	4	5	4	6	5
Total tead content as Pb, %(m/m)	55.0	50.0	55.0	50.0	55.0	50.0	55.0	50.0	65.0	60.0
Content of Chrome-acid lead, %	50.0		60.0		90.0		85.0		55.0