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SYNOX YELLOW 4920 is a synthetic iron oxide Fe(OH)O.
SYNOX YELLOW 4920 has excellent particle size, easy to be dispersed, excellent compatibility character with paint and coating system under the feature of thinner powder.
SYNOX YELLOW 4920 is used in coil coatings.
CAS: 51274-00-1
MF: Fe2O3
MW: 159.69
EINECS: 257-098-5
Synonyms
C.I.Pigmentyellow42;Transparentironoxideyellow;RAW UMBER;ROUGE;SIENNA BURNT;SIENNA;NR RED IRON OXIDE;YELLOW FERRIC OXIDE
SYNOX YELLOW 4920, also known as Yellow Iron oxide is a yellow powder in the form of an alkaline oxide with comparatively stable chemical properties.
SYNOX YELLOW 4920It is is insoluble in water and alcohol, slightly soluble in acids but completely dissolves in concentrated hydrochloric acid.
When heated to 80℃, SYNOX YELLOW 4920 loses water and converts to red ferric oxide.
SYNOX YELLOW 4920 is used in coating, printing ink and paint, and also as a coloring agent for building material, rubber and paper-making.
SYNOX YELLOW 4920 is widely used due to its bright and pure colour, good weather proofing and high opacity.
SYNOX YELLOW 4920 is manufactured by the precipitation of ferric oxide hydroxide followed by purification through washing, drying and milling.
SYNOX YELLOW 4920, with the CAS number 51274-00-1, is an organic pigment primarily used in various applications such as coatings, plastics, and inks due to its excellent lightfastness and stability.
SYNOX YELLOW 4920 is characterized by its bright yellow hue, which is derived from its chemical structure, typically involving a complex azo compound.
SYNOX YELLOW 4920 exhibits good opacity and tinting strength, making it suitable for use in a wide range of formulations.
Additionally, SYNOX YELLOW 4920 is known for its resistance to heat and solvents, which enhances its durability in end-use applications.
SYNOX YELLOW 4920 is generally considered safe for use in various consumer products, although specific regulatory guidelines may apply depending on the intended application.
SYNOX YELLOW 4920 is often favored for its environmental stability and non-toxic properties, contributing to its popularity in the art and industrial sectors.
Overall, SYNOX YELLOW 4920 is a versatile and reliable choice for achieving vibrant yellow coloration in diverse materials.
SYNOX YELLOW 4920 also known as Pigment yellow 42 is yellow powder in the form of an alkaline oxide with comparatively stable chemical properties.
SYNOX YELLOW 4920 is slightly soluble in acids but completely dissolves in concentrated hydrochloric acid.
SYNOX YELLOW 4920 is used in coating, printing ink and paint, and also as a coloring agent for building material, rubber and paper-making.
SYNOX YELLOW 4920 widely used due to its bright and pure colour, good weather proofing and high opacity.
SYNOX YELLOW 4920 is manufactured by the precipitation of ferric oxide hydroxide followed by purification through washing, drying and milling.
SYNOX YELLOW 4920 Chemical Properties
Melting point: 1538 °C
density: 5.24
Fp: >230 °F
storage temp.: Room Temperature
form: Powder
color: yellow
Water Solubility: 1.65μg/L
Dielectric constant: 1.9（Ambient）
Cosmetics Ingredients Functions: COLORANT
CAS DataBase Reference: 51274-00-1(CAS DataBase Reference)
EPA Substance Registry System: SYNOX YELLOW 4920 (51274-00-1)
Uses
SYNOX YELLOW 4920 is used in the topical solar composition protecting skin exposed to irradiation of high energy visible light.
Synthesis
74g of iron filings were added to 1000ml of 15% sulfuric acid and reacted until the iron filings disappeared, generating ferrous sulfate with a concentration of about 200g/L.
To the ferrous sulfate solution produced above, enough 30% sodium hydroxide was added, stirring constantly to convert a total of 40% of the iron into ferrous hydroxide [Fe(OH)2], and air was passed through the solution at 30-35C to oxidize the Fe to Fe to form nuclei.
Then add 90g / L of iron filings to which the treatment, so that the generation of 7g / L of the nucleus and 40g / L of ferrous sulfate, continue to heat to 85, at a rate of 600L / h drum air oxidation for 64h, and then filtered, washed, dried, crushed to produce aqueous iron oxide yellow.
