Pigment index number: C.I. Pigment Yellow 42 (77492), CAS: 51274-00-1, molecular formula \ (\ boldsymbol {\ alpha FeOOH} \) (also written as \ (\ boldsymbol {Fe2O3 · H2O} \), monohydrate iron oxide), belongs to inorganic iron oxide pigments, mainstream models on the market: 313, 910, 920 * *, of which 313 is the universal standard grade Hunan Sanhuan Yan .

1、Indicateurs physiques et chimiques de base

-Appearance: Lemon yellow to earthy yellow fine powder, needle shaped crystal particles

-Iron oxide content: ≥ 86%

- Teneur en humidité : ≤ 1,0 %

-Water soluble substance: ≤ 0.3%

-Résidus de tamis à mailles 325 : ≤ 0,3 %

-Oil absorption: 25-35g/100g

-PH value: 3.0-7.0

-Solubility: insoluble in water, alcohol, and various organic solvents; Soluble in strong and concentrated acids

-Thermal characteristics: above 150 ℃, crystal water is lost and gradually dehydrated to transform into iron oxide red, making it unsuitable for long-term high-temperature processing scenarios above 150 ℃

2、Caractéristiques de performance de base

1. Strong covering power, high coloring power, soft and natural color tone, UV resistant, not easy to fade outdoors

2. Light resistant and weather resistant top-level (level 8), excellent alkali resistance, weak acid resistance, solvent resistance, no migration, no color bleeding, very suitable for outdoor products

3. The chemical properties are stable, non-toxic, and low in heavy metals, which can meet the environmental requirements of RoHS and REACH

4. Good dispersibility, suitable for various water-based and solvent based systems, and the powder is easy to grind and disperse

5. High cost-effectiveness, compared to organic yellow pigments, outdoor aging resistance advantages are obvious

3、Principaux domaines d'application

1. Building material coloring (maximum application): Colored permeable bricks, colored tiles, terrazzo, artificial marble, precast concrete parts, flooring, directly mixed into cement for coloring, alkali resistant and non fading

2. Coatings and colorants: latex paint for interior and exterior walls, powder coating, alkyd paint, epoxy paint, anti-corrosion paint, water-based industrial colorants, art pigments

3. Plastic, rubber, masterbatch: PVC, PE, PP, rubber products coloring, note: processing temperature should not exceed 150 ℃

4. Other industries: ink, paper, leather coating, cultural and educational supplies, ceramic body coloring