Qunqing (Qunqing Blue, Buddha's Green) Product Introduction

Pigment Index Number: C.I. Pigment Blue 29, C.I.77007； CAS：57455-37-5**

Chemical composition: Sodium silicoaluminate sulfide, molecular formula \ (\ boldsymbol {Na_6Al4Si6S4O {20}} \), inorganic blue pigment; Mainstream models on the market: 462, 463, 464, 465, 5008, etc. The color light is * * red light blue * *, which is different from the green light blue of phthalocyanine blue BGS

1、 Basic physical and chemical indicators

-Appearance: Bright blue fine powder with red light, semi transparent

-Oil absorption: 35-42g/100g

-Moisture content: ≤ 1.0%

-Water soluble substance: ≤ 0.5%

-325 mesh sieve residue: ≤ 0.3%

- pH：6.0～9.0

-Solubility: Insoluble in water, alcohols, and various organic solvents; Not acid resistant, decomposes and fades when exposed to strong acids, excellent alkali resistance

-Heat resistance: stable at ≤ 300 ℃, suitable for high-temperature processing; Density of approximately 2.35g/cm ³

2、 Core performance characteristics

1. Unique red and blue light, with clean and transparent colors, is an irreplaceable blue phase of phthalocyanine blue; Translucent, with low coverage

2. Light resistance level 8, excellent weather resistance, good alkali and heat resistance, solvent resistance, no migration, no color bleeding

3. Core function: Whitening and brightening, can counteract the yellow phase of white products, and replace fluorescent whitening agents for whitening white materials

4. Non toxic and environmentally friendly, low in heavy metals, able to meet RoHS and REACH requirements, high-purity grade can be used in cosmetics

5. Good dispersibility and high cost-effectiveness

3、 Main application areas

1. Coatings and colorants: latex paint for interior and exterior walls, alkaline architectural coatings, art pigments, oil/watercolor paints; Suitable for alkaline systems, acid paint is prohibited

2. Plastic, rubber, masterbatch: PE, PP, PVC, EVA, rubber products, plastic masterbatch color matching

3. Papermaking: paper color adjustment, white paper yellowing and whitening

4. Others: washing powder/detergent whitening, printing ink, stationery, cosmetics (eye shadow, etc.), color matching of building materials