C.I. PIGMENT YELLOW 42

CAS NUMBER: 51274-00-1

EC NUMBER: 257-098-5

MOLECULAR FORMULA: FeH3O3

MOLECULAR WEIGHT: 106.87

IUPAC NAME: iron(3+);oxygen(2-);hydroxide;hydrate

C.I. Pigment Yellow 42 is also known as Yellow Iron oxide.
C.I. Pigment Yellow 42 is a yellow powder in the form of an alkali oxide with relatively stable chemical properties.

C.I. Pigment Yellow 42 is insoluble in water and alcohol
C.I. Pigment Yellow 42 is sparingly soluble in acids but completely soluble in concentrated hydrochloric acid.

When heated to 80°C, C.I. Pigment Yellow 42 loses water and turns into red iron oxide.
C.I. Pigment Yellow 42 is used in coating, printing ink and paint.

C.I. Pigment Yellow 42 is also used as a coloring agent for building material, rubber and papermaking.
C.I. Pigment Yellow 42 is widely used because of its bright and pure colour, good weather resistance and high opacity.

C.I. Pigment Yellow 42 is produced by precipitation of iron oxide hydroxide followed by purification by washing, drying and grinding.
C.I. Pigment Yellow 42 is used in a topical solar composition that protects skin exposed to irradiation of high-energy visible light.

C.I. Pigment Yellow 42 is used as a colorant in the paint-polymer industries.
C.I. Pigment Yellow 42 is also used as a food coloring.
C.I. Pigment Yellow 42 is also used as an inert ingredient in non-food pesticide products.

C.I. Pigment Yellow 42 is mainly used in:
-paint

-cement pieces

-building surfaces

-plastics

- rubber painting

C.I. Pigment Yellow 42 is an inorganic yellow pigment
C.I. Pigment Yellow 42 is widely used for coloring artificial marble and rubber products.

C.I. Pigment Yellow 42 is also used in the manufacture of watercolors, paints and architectural coatings.
C.I. Pigment Yellow 42 is a substance used as an intermediate for the production of iron oxide-based pigments such as iron oxide black.

C.I. Pigment Yellow 42 has a lemon yellow to brown powder form.
C.I. Pigment Yellow 42 is a fine grained, crystal of iron oxide hydrate.

C.I. Pigment Yellow 42 has a density of 4.0g/cm3.
C.I. Pigment Yellow 42 has good tinting power, covering power and light resistance, alkali resistance, acid resistance and heat resistance.

C.I. Pigment Yellow 42 is insoluble in water and alcohol
C.I. Pigment Yellow 42 is soluble in acids.
C.I. When Pigment Yellow 42 is heated above 150oC, crystalline water begins to decompose and turns red.

Preparation method:
Ferrous sulfate oxidation method; Sulfuric acid reacts with iron shavings to produce ferrous sulphate, 3% sodium hydroxide solution is added and air is introduced to prepare each crystal core, ferrous sulphate and iron shavings are added to the crystal core suspension, heated and oxidized and filtered by pressure filter, washing and pulverized with the C.I. Pigment Yellow 42 is obtained.

Also known as Yellow Iron Oxide, C.I. Pigment Yellow 42 is a yellow powder in the form of an alkali oxide with relatively stable chemical properties.
C.I. Pigment Yellow 42 is insoluble in water and alcohol, slightly soluble in acids, but completely soluble in concentrated hydrochloric acid.

C.I. Pigment Yellow 42 is widely used because of its bright and pure colour, good weather resistance and high opacity.
C.I. Pigment Yellow 42 is produced by precipitation of iron oxide hydroxide followed by purification by washing, drying and grinding.

C.I. Pigment Yellow 42 is an inorganic yellow pigment used as a coating pigment in the pharmaceutical industry.
C.I. Pigment Yellow 42 is also known as yellow iron oxide [FeOH3].

C.I. Pigment Yellow 42 is available as an amorphous yellow powder and is mainly used in the cosmetic industry.
C.I. Pigment Yellow 42 is one of the many raw colors of iron oxide powder.

C.I. Pigment Yellow 42 is an iron hydroxide.
C.I. Pigment Yellow 42 Contains Yellow mustard clay

In ceramics, C.I. Pigment Yellow 42 is most commonly used in glazes and clay bodies
C.I. Pigment Yellow 42 has a stable color form.

C.I. Pigment Yellow 42 is a synthetic material with a very fine particle size.
C.I. Pigment Yellow 42 normally produces a red color when fired in clay bodies in oxidation.

C.I. Pigment Yellow 42 is not light
C.I. Pigment Yellow 42 does not clump much.
C.I. Pigment Yellow 42 is coarser in particle size and may leave a slightly lighter colored residue on a mesh screen.

Like other forms of iron, C.I. Pigment Yellow 42 is never used pure.
C.I. Pigment Yellow 42 is also used in paints, enamels, concrete colorants, plastics, rubber and paper where permanent yellow is required.

C.I. Pigment Yellow 42 has excellent coverage.
C.I. Pigment Yellow 42 absorbs ultraviolet light

C.I. Pigment Yellow 42 is compatible with a wide variety of vehicles
C.I. Pigment Yellow 42 disperses well in aqueous and solvent systems
C.I. Pigment Yellow 42 does not contain heavy metals.

PHYSICAL PROPERTIES:

-Molecular Weight: 106.87

-Full Mass: 106.943154

-Monoisotopic Mass: 106.943154

-Topological Polar Surface Area: 3 Ų

-Physical Identification: Yellow odorless powder

-yellow color

-Form: Solid

-Odor: Odorless

- Solubility in water: Insoluble

-Chemical Classes: Dyes -> Other Dyes

-Density: 2.44~3.60

-Melting Point: 350~400℃

-Storage Condition: Room Temperature

C.I. Pigment Yellow 42 is a yellow powder in the form of alkaline oxide.
C.I. Pigment Yellow 42 is insoluble in water and alcohol

C.I. Pigment Yellow 42 is sparingly soluble in acids but completely soluble in concentrated hydrochloric acid.
C.I. Pigment Yellow 42 is used in coating, printing ink and paint.

C.I. Pigment Yellow 42 is also a coloring agent for building material, rubber and papermaking.
C.I. Pigment Yellow 42 is also used as a food coloring.

CHEMICAL PROPERTIES:

-Number of Hydrogen Bond Donors: 2

-Number of Hydrogen Bond Acceptors: 3

-Number of Convertible Bonds: 0

-Heavy Atomic Count: 4

-Formal Charge: 0

-Complexity: 0

-Isotope Atomic Number: 0

-Defined Number of Atom Stereocenters: 0

-Undefined Atom Stereocenter Count: 0

-Defined Number of Bond Stereocenters: 0

-Undefined Number of Bond Stereocenters: 0

-Number of Covalently Bonded Units: 4

-Compound Canonicalized: Yes

C.I. Pigment Yellow 42 is mainly used on building surfaces
C.I. Pigment Yellow 42 is also used in the manufacture of watercolors, paints and architectural coatings.
C.I. Pigment Yellow 42 has a lemon yellow to brown powder form.

C.I. Pigment Yellow 42 has good hiding power and light resistance
C.I. Pigment Yellow 42 is widely used because of its bright and pure colour, good weather resistance and high opacity.

C.I. Pigment Yellow 42 is produced by precipitation of iron oxide hydroxide followed by purification by washing, drying and grinding.
C.I. Pigment Yellow 42 is an iron hydroxide.

C.I. Pigment Yellow 42 is not as fluffy and light as black but more of a red.
C.I. Pigment Yellow 42 has excellent coverage.

C.I. Pigment Yellow 42 absorbs ultraviolet light
C.I. Pigment Yellow 42 disperses well in aqueous and solvent systems

SYNONYMS: 

Ferric oxide Yellow
C.I. Pigment Yellow 42
UNII-EX438O2MRT
Pigment Yellow 42
EX438O2MRT
iron(3+);oxygen(2-);hydroxide;hydrate
Bayferrox 920
Ferric oxide, yellow
Iron hydroxide oxide yellow
Ferric oxide, yellow
CCRIS 4378
EINECS 257-098-5
EC 257-098-5
C.I. Pigment Yellow 42
Ferric oxide Yellow
Iron(III) oxide monohydrate
Ironoxidemonohydrateyellow
IRON OXIDE YELLOW
COMPOUND FERRIC GREEN
FERRIC GREEN NO.5605
Eisen(3+)trihydroxid 
Iron(3+) trihydroxide
Trihydroxyde de fer(3+)
yellow iron oxide
[1309-33-7] 
ferric hydroxide
iron hydroxide
Iron hydroxide (Fe(OH)3)
Iron hydroxide oxide
Iron hydroxide|Ferric hydroxide
Iron(III) hydroxide
IRONTRIOL
aquaspersabil YIO
biogenic magicolor-103Y
c.i. 77492
ci 77492
ferric oxide hydrated
ferric oxide yellow
yellow iron oxide
iron(3+);oxygen(2-);hydroxide;hydrate
oleosperse YIO
pigment yellow 42
pigment yellow 43
sympholight YW10
iron(3+);oxygen(2-);hydroxide;hydrate
Bayferrox 920
Ferric oxide, yellow
Iron hydroxide oxide yellow
Ferric oxide, yellow
yellow RP-18K