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SYNOX YELLOW 4920

CAS Number: 51274-00-1
Molecular Formula: Fe2O3·H2O
Molar Mass: 177.71 g/mol

SYNOX YELLOW 4920 is 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 also used in coil coatings.

Iron oxide pigments, which may be natural or synthetic, have been used as colorants since early humans began painting on cave walls. 
Natural pigments are derived from several iron oxide minerals: Red pigments are derived from hematite. 
Yellow and brown pigments — ochres, sierras and umbers — are derived from limonite.

Iron oxide pigments ranging from rusty red, orange and yellow tones to earthy tan, brown and black shades, that offer the tint strength, color purity and light fastness needed for long-lasting performance.

Iron oxide pigments produce vibrant, durable colors in concrete and other cementitious materials. 
Iron oxide pigments are tested and certified to be light-fast, insoluble, and alkali resistant (ASTM C-979). 

This means iron oxide pigments will not deteriorate over time and will be readily visible in the concrete. 
Due to their small size, ten times smaller than cement particles, iron oxide pigments disperse in the mix, embed in the cement matrix, and give the appearance of uniform coloration.

Iron oxide pigments will not affect the strength or workability of concrete when used in standard doses. 
They offer a host of benefits to the concrete contractor, architect, ready mix concrete producer, and manufactured concrete product producer. 

Iron oxide pigments can drastically improve the value of concrete. 
By adding color, concrete is more attractive and provides color-related properties such as solar reflectiveness.

Colour difference in paints:
Mass tone ∆EabL max 1.0
Test method:ISO787/1

Tint-tone ∆EabL max 1.0
Test method:ISO787/16

Relative tinting strength (%) min 95 max 105
Test method:ISO787/16

Colour difference in cement : ∆Ecmc max 1.5
3 % Concentration in cement

Relative tinting strength (%) min 95 max 105

Technical data of SYNOX YELLOW 4920:
Fe2O3 content (%) min 85
Test method:ISO1248/8

Moisture (%) max 1.0
Test method:ISO787/2

Water soluble salts (%) max 0.3
Test method:ISO787/3

Sieve residue on 45µm mesh (%) max 0.3
Test method:ISO787/7

pH value min 3.5 max 8.0
Test method:ISO787/9

Oil absorption min 30 max 45
Test method:ISO787/5

Density (g/cm3) approx. 4.0
Test method:ISO787/10

Apparent density (g/cm3) approx. 0.6
Test method:ISO787/11

Particle shade predominantly acicular
Average particle size (µm) approx. 0.1 x 0.8

Identifications of SYNOX YELLOW 4920:
Product name: Yellow 4920
Chemical name: EC name: iron hydroxide oxide yellow (Fe(OH)O) EC number: 257-098-5
CAS name: Iron hydroxide oxide (Fe(OH)O) CAS number: 51274-00-1
C.I.: Pigment yellow 42
REACH Pre-registration number: WN172640-19

Chemical formula: Synthetic iron oxide Fe(OH)O
Type: Yellow iron oxide pigment
Colour index: Pigment yellow 42 (77492)
CAS NO.: 51274-00-1 EC NO.: 257-098-5
Form: Powder
Hue: Bright yellow

Name: Iron (III) oxide monohydrate
CAS: 51274-00-1
Molecular Formula: Fe2O3·H2O
Molecular Weight: 177.71

CAS: 51274-00-1
EINECS: 257-098-5
51274-00-1 - Physico-chemical Properties
Molecular Formula: Fe2O3·H2O
Molar Mass: 177.71 g/mol
Density: 2.44~3.60
Melting Point: 350~400℃

Properties of SYNOX YELLOW 4920:
Appearance: Yellow powder.
Odour: Odourless
Important health, safety and environmental information
PH Value (10g/l water): 3.5-8.0

Names of SYNOX YELLOW 4920:

CAS names of SYNOX YELLOW 4920:
C.I. Pigment Yellow 42

IUPAC names of SYNOX YELLOW 4920:
ALPHA-IRON(III) OXIDE
ALPHA-IRON(III) OXIDEC.I. Pigment Yellow 42
Ferric oxide Yellow
Iron (III) oxide monohydrate
Iron Hydroxide Oxide
Iron Hydroxide Oxide Yellow
Iron hydroxyde oxide
iron III hydroxide oxide
Iron Oxide Hydroxide
Iron Oxide Yellow 4420
Iron oxy hydroxide
iron three hydroxide oxide
iron(3+) ion oxidanide oxidandiide
iron(3+);oxygen(2-);
hydroxide;
hydrateIron(III) oxide-hydroxide
C.I. Pigment Yellow 42
Iron (III) hydroxide oxide
Iron (III) oxide monohydrate
Iron hydroxide oxide
iron hydroxide oxide
Iron Hydroxide Oxide
Iron hydroxide oxide
iron hydroxide oxide
Iron hydroxide oxide yellow
iron hydroxide oxide yellow
Iron Hydroxide oxide yellow
Iron hydroxide oxide yellow
iron hydroxide oxide yellow
iron III hydroxide oxide
Iron oxide hydroxde
Iron Oxide Hydroxide
iron oxide hydroxide
Iron Oxide Yellow
Iron Oxide Yellow 4420
Iron oxy hydroxide
iron three hydroxide oxide
Iron(3+) hydroxide oxidandiide
iron(3+) hydroxide oxidandiide
iron(3+) hydroxide oxide (1/1/1)
iron(3+) ion oxidanide oxidandiide
iron(3+);oxygen(2-);hydroxide;hydrate
Iron(III) oxide-hydroxide
iron(III) oxide-hydroxide
YE 6420A
Yellow Iron Oxide
Yellow iron oxide

Trade names of SYNOX YELLOW 4920:
Bayferrox
C.I. 77492
C.I. Pigment Yellow 42
CathayCoat Yellow
CathayCoat Yellow Iron Oxide
CathayPure Yellow
CathayPure Yellow Iron oxide
Colortherm
FerroTint Yellow
FerroTint Yellow Iron Oxide
Ferroxon Yellow
GEH
iron hydroxide oxide
iron hydroxide oxide yellow
Iron oxide yellow
Iron(III)oxide hydroxide
Lavanya Sooraj / Yellow Iron Oxide
ossido di ferro giallo
ossido di ferro giallo sintetico
Piirox GC913
Piirox A920
Piirox I913
Piirox K910M
PJ 920
Procter Johnson Yellow Iron Oxide
Spectrum Yellow
Spectrum Yellow Iron Oxide
Sumicos Yellow 2213C
synthetic yellow iron oxide
TAROX IRON OXIDE LEMON
TAROX IRON OXIDE LL-100DK
TAROX IRON OXIDE LL-100HP
TAROX IRON OXIDE LL-100P
TAROX IRON OXIDE LL-50
TAROX IRON OXIDE LL-XLO
TAROX IRON OXIDE OCHER 1P
TAROX IRON OXIDE STN-1
TAROX IRON OXIDE YM1100
Yellow iron oxide
Yellow iron oxide 313
Yellow pigment G-1
Yellow Pigment G-2

Other identifiers of SYNOX YELLOW 4920:
Ferric oxide; 1309-37-1
Iron Oxide Red
Sienna
Red Ochre
Purple ochre (particle size is greater than Red Ochre)
Fe2O3
Anhydrous iron oxide
Iron(III) oxide
Hematite (alpha form)
Maghemite (gamma form)
C.I. Pigment Red 101 and 102

Synonyms of SYNOX YELLOW 4920:
C.I. Pigment Yellow 42
Iron (III) oxide monohydrate
Ferric oxide Yellow
Iron(III) oxide monohydrate
Ironoxidemonohydrateyellow
IRON OXIDE YELLOW
COMPOUND FERRIC GREEN
FERRIC GREEN NO.5605
Iron hydroxide oxide
12022-37-6
1310-14-1
20344-49-4 
243-746-4
Ferric hydroxide oxide
Goethite 
Hydroxy(oxo)eisen
Hydroxy(oxo)fer
Hydroxy(oxo)iron
Iron(III) oxide
Iron, hydroxyoxo- 
lepidocrocite
MFCD00064782
12181-28-1
20767-00-4
215-176-6
51274-00-1
FeO(OH)
Goethite (Fe(OH)O)
Iron oxide
Iron Pigment Yellow
Iron Pigment Yellow (E172)
Iron(III) hydroxide, α
Iron(III) hydroxide, γ
iron(III) oxide-hydroxide
Iron(III) oxyhydroxide
yellow iron oxide
 

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