C.I. Pigment Yellow 42

Basic Information

View in Editor

CAS Number

51274-00-1

Molecular Formula

Fe2O3.H2O

Molecular Weight

177.7 g/mol

EINECS

257-098-5

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

1538 °C

Density

5.24

Water Solubility

1.65μg/L

Flash Point

>230 °F

SMILES

View in Editor

[Fe+3].O.[OH-].[O-2]

InChI

InChI=1S/Fe.2H2O.O/h;2*1H2;/q+3;;;-2/p-1

InChIKey

LDHBWEYLDHLIBQ-UHFFFAOYSA-M

Complexity

Safety Information

View Safety Information

Storage Conditions

Room Temperature

RTECS

NO7400000

Synonyms & References

English

Iron (III) oxide monohydrate
Ironoxidemonohydrateyellow
IRON OXIDE YELLOW
C.I. PIGMENT YELLOW 42
COMPOUND FERRIC GREEN
FERRIC GREEN NO.5605
Pigment Yellow 42
Ferric oxide Yellow
C.I. 77492
Iron (III) oxide monohydrate yellow
C.I.Pigmentyellow42
Transparentironoxideyellow
RAW UMBER
ROUGE
SIENNA BURNT
SIENNA
NR RED IRON OXIDE
YELLOW FERRIC OXIDE

MDL Number

MFCD00149717

EC Number

257-098-5

FAQ

What are the physical and chemical properties of C.I. Pigment Yellow 42 (CAS: 51274-00-1)?

C.I. Pigment Yellow 42 (CAS: 51274-00-1) is a crystalline compound with a high molecular weight, approximately 1,000 g/mol. It has poor water solubility but excellent oil solubility. Chemically, it shows low reactivity with most organic and inorganic compounds, making it suitable for various applications. Its stability under heat and light ensures long-lasting color retention.

How is C.I. Pigment Yellow 42 (CAS: 51274-00-1) typically synthesized?

C.I. Pigment Yellow 42 (CAS: 51274-00-1) is synthesized through a condensation reaction of a substituted aromatics and a β-naphthol derivative. Commonly, a strong base like sodium hydroxide is used as a catalyst to increase the yield. The process involves careful temperature control and reaction time to achieve high purity and selectivity.

What industries use C.I. Pigment Yellow 42 (CAS: 51274-00-1)?

C.I. Pigment Yellow 42 (CAS: 51274-00-1) is extensively used in the printing ink, plastic, and textile industries for its vibrant yellow color. It is also found in oil paints and coating applications, providing excellent light and heat stability to the final products.

What precautions should be taken when handling C.I. Pigment Yellow 42 (CAS: 51274-00-1)?

When handling C.I. Pigment Yellow 42 (CAS: 51274-00-1), it is essential to use appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Work in a well-ventilated area or a fume hood to avoid inhalation of dust. Spills should be cleaned up immediately using appropriate absorbent materials, and the area should be thoroughly rinsed with water. Refer to the safety data sheet (SDS) for detailed instructions.