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By certification 
Product Name: Ultramarine Blue/ Ultramarine C. I. Pigment Blue 29 (77007)
CAS NO 57455-37-5
Molecular Weight: 862.60578
Molecular Formula: Na6Al4Si6S4O20
Shade: Reddish blue
Technical Term |
462 |
463 |
P.H. Value |
8.0-10.0 |
8.0-10.0 |
Density(g/cm3) |
2.35 |
2.35 |
Oil Absorption(ml/100g)% |
25-45 |
25-45 |
Heat Resistance ( > ) |
300 (°C) |
300 (°C) |
Acid Resistance |
1 |
1 |
Alkali Resistance |
2-3 |
2-3 |
Resistance to Migratory |
5 |
5 |
Content of Free Sulphur (%≤) |
0.30 |
0.15 |
Through Screen (325m) (%≤) |
0.10 |
0.10 |
Water Soluable (%≤) |
1.50 |
1.50 |
Volatile Matter （105±2 ℃）(%≤) |
1.00 |
1.00 |
